JP2002207520A - Multi-output dc power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-output DC power supply device capable of simultaneously selecting the direction to increase or decrease an output voltage output from one or more output ends, and producing an output voltage through one voltage changing operation. SOLUTION: When tracking action is selected by a tracking action setting part 25 and the direction to increase an output value is selected by a tracking action output setting part 24, an output to an output end indicated by a voltage variable output end selecting part 22 is changed according to a DC output value which is variable in the direction to either increase or decrease the DC output value set by the operation of an output voltage setting part 21 for making the output value variable. When the tracking action is selected by the tracking action setting part 25 and the direction to decrease the output value is selected by the tracking action output setting part 24, an output to the output end indicated by the voltage variable output end selecting part 22 is changed according to a DC output value which is variable in the opposite direction to the direction to increase or decrease the DC output value set by the operation of the output voltage setting part 21 for making the output value variable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-output DC power supply, and more particularly, to a multi-output DC power supply for transmitting a tracking output voltage.

[0002]

2. Description of the Related Art A DC power supply for supplying DC power to current electronic equipment is configured to output a plurality of DC voltages. Further, the output voltages of two of the DC output voltages can be simultaneously varied. One example is a variable output voltage range of 0 to + αV, 0 to −αV (for example, 0 to +18 V, 0 to −18 V), and 0 to + βV (for example, 0 to +5 V). Of these, two output DC voltages can be varied simultaneously. Hereinafter, the output voltage is 0 to +18 V output as the power supply of the analog circuit.
(A output), 0 to -18 V (B output), and 0 to +5 V (C output) output as a power supply of a digital circuit.

[0003] Such a conventional multi-output DC power supply device 1A includes:
As shown in FIG. 14, an operation unit 2A, a control unit 3A, and a power supply unit 5 are provided.

The operation unit 2A comprises a rotary encoder, an output voltage setting unit 21 for setting a DC voltage value to be changed and a direction of increase and decrease of the DC voltage value, and a voltage for instructing one or more output terminals whose output voltage is to be varied. Variable output terminal instruction key (hereinafter simply referred to as A, B, C output terminal instruction key, or A, B,
Variable output terminal selection unit 2 having a C output key)
2, and ON to select ON / OFF of the tracking operation,
A tracking operation setting section 25 comprising an off selection key.

[0005] The control section 3A has a memory 4A comprising a CPU 3B and a RAM. In the memory 4A, a voltage variable output setting table 41 in which setting data by the A, B, and C output keys of the voltage variable output terminal selecting unit 22 is stored, and setting data of an on / off selection key of the tracking operation setting unit 25 are stored. Tracking operation setting table 42, and a digital / analog converter (DAC) setting data table (a) to which data to be digital / analog converted (DA converted) (hereinafter also referred to as setting data) are stored.
(C) 46 to 48 are formed, and the setting data set by the operation unit 2A and the DA supplied to the DAC
The C setting data is written.

The power supply unit 5 includes DACs (A) to (C) 51 to 53 for generating a reference voltage of the power supply device, and DACs (A) to
(C) output power supply units 54 to 56 each of which outputs the output of the reference voltage as a reference voltage (the output power supply unit can be basically considered as an amplification unit. 56 is simply referred to as amplifiers 54 to 56).

The operation of the multi-output power supply 1A will be described with reference to the flowcharts of FIGS.

The A, B, and C output keys of the voltage variable output terminal selection unit 22 corresponding to the A, B, and C outputs, the tracking operation setting unit 25, or the rotary encoder of the output voltage setting unit 21 are manually operated ( Step S11
1). The control unit 3A is interrupted by the output from the operation unit 2A by this operation (step S112), and the key operated on the operation unit 2A is detected (step S113). When it is determined by this detection that the rotary encoder has been operated, the direction of increase and decrease of the set voltage and the number of pulses are detected based on the output signal of the rotary encoder (step S114), and stored in the variable voltage output setting table 41. With reference to the data (step S115), it is determined which of the A, B, and C outputs stored in the voltage variable output setting table 41 is to have a variable voltage value (step S116).

If it is determined in step S116 that the C output is variable, then in step S116, D
The data stored in the AC setting data table (C) 48 is referred to (Step S117), and Step S11 is performed.
4, the data stored in the DAC setting data table (C) 48 is incremented / subtracted based on the increasing / decreasing direction of the set voltage and the number of pulses based on the output signal of the rotary encoder detected in step S118 (step S118). The data stored in the DAC setting data table (C) 48 is updated with the value based on the result of the arithmetic processing (step S119).

Following step S119, the updated D
The data stored in the AC setting data table (C) 48 is sent to the DAC (C) 53 (step S12).
0), converted into an analog voltage by the DAC (C) 53,
The output voltage of the DAC (C) 53 is amplified by the amplifier (C) 56 and sent out as an output (step S12).
1).

If it is determined in step S116 that the output A is variable, the data stored in the tracking operation setting table 42 is referred to (step S122) as shown in FIG. It is determined whether the stored data is data for performing the tracking operation (the ON selection key is pressed) or not (step S123). If it is determined in step S123 that the stored data is OFF (the OFF selection key is pressed), The data stored in the DAC setting data table (A) 46 is referred to (step S124), and the DAC setting data is determined based on the increasing / decreasing direction of the set voltage and the number of pulses based on the output signal of the rotary encoder detected in step S114. Increase / decrease in data stored in table (A) 46 Process is performed (step S12
5) The data stored in the DAC setting data table (A) 43 is updated to a value based on the result of the increase / subtraction processing (step S126).

Following step S126, the updated D
The data stored in the AC setting data table (A) 46 is sent to the DAC (A) 51 (step S12).
7), converted into an analog voltage by the DAC (A) 51,
The output voltage of the DAC (A) 51 is amplified by the amplifier (A) 54 and sent out as an output (step S12).
8).

If it is determined in step S116 that the B output is variable, the data stored in the tracking operation setting table 42 is referred to (step S132) as shown in FIG. It is determined whether the stored data is data for performing a tracking operation (the ON selection key is pressed) (step S133), and it is determined in step S133 that the data is OFF (the OFF selection key is pressed) data. If it is, the data stored in the DAC setting data table (B) 47 is referred to (step S13).
4) The data stored in the DAC setting data table (B) 47 is incremented / subtracted based on the increasing / decreasing direction of the set voltage based on the output signal of the rotary encoder detected in step S114 and the number of pulses (step S114). S135), the data stored in the DAC setting data table (B) 47 is updated to the value based on the result of the increase / subtraction processing (step S136).

Following step S136, the updated D
The data stored in the AC setting data table (B) 47 is sent to the DAC (B) 52 (step S13).
7), converted into an analog voltage by the DAC (B) 52,
The output voltage of the DAC (B) 52 is amplified by the amplifier (B) 52 and sent out as an output (step S13).
8).

Step S123 or step S13
If it is determined in step 3 that the tracking operation is to be performed (the ON selection key has been pressed), as shown in FIG. 17, after step S123 or step S133, the DAC is executed.
The data stored in the setting data table (A) 46 is referred to (step S141), and the DAC setting data table (A) is determined based on the increasing / decreasing direction of the setting voltage based on the output signal of the rotary encoder detected in step S114 and the number of pulses. ) 46 is subjected to an increase / subtraction process (step S142), and the DAC setting data table (A) 4 is converted into a value based on the result of the increase / subtraction process.
6 is updated (step S143).

Subsequent to step S143, the updated D
The data stored in the AC setting data table (A) 46 is sent to the DAC (A) 51 and the DAC (A) 51
Is converted to an analog voltage (step S144).
The output voltage of the AC (A) 51 is amplified by the amplifier (A) 54 and sent out as an output (step S145).

Subsequent to step S145, the data stored in the DAC setting data table (B) 47 is referred to (step S146), and the direction of increase and decrease of the set voltage based on the output signal of the rotary encoder detected at step S114. The data stored in the DAC setting data table (B) 47 is subjected to the increment / subtraction processing based on the number of pulses (step S147), and is stored in the DAC setting data table (B) 47 as a value based on the result of the increment / subtraction processing. Is updated (step S14).
8).

Subsequent to step S148, the updated D
The data stored in the AC setting data table (B) 47 is sent to the DAC (B) 52 and the DAC (B) 52
Is converted to an analog voltage (step S149).
The output voltage of the AC (B) 52 is amplified by the amplifier (B) 55 and sent out as an output (step S150).

If it is detected in step S113 that the operated keys are the output A, B, and C keys, a routine for updating data stored in the voltage variable setting table shown in FIG. 18 is executed.

When the routine for updating the data stored in the voltage variable setting table starts, the voltage variable output setting table 4
1 is referred to (step S15).
1) It is checked whether the operated key is A, B, or C output key (step S152).

If it is determined in step S152 that the A output key has been operated, the data stored in the voltage variable output setting table 41 is rewritten to data for the A output key (step S15).
3). If it is determined in the step S152 that the B output key has been operated, the data stored in the voltage variable output setting table 41 is rewritten to the data for the B output key (step S154). If it is determined by the check in step S152 that the C output key has been operated, the voltage variable output setting table 41
Is rewritten to data corresponding to the C output key (step S155).

If it is detected in step S113 that the operated key is a selection key in the tracking operation setting section 25, that is, an ON selection key or an OFF selection key, the tracking operation setting table 4 shown in FIG.
An update routine for the data stored in 2 is executed.

When the routine for updating the data stored in the tracking operation setting table 42 is entered, the data stored in the tracking operation setting table 42 is referred to (step S161), and the operated selection key is turned on. Or an off selection key is detected (step S1).
62) If it is determined that the key is an off-selection key, the data stored in the tracking operation setting table 42 is updated to data corresponding to the off-selection key (step S16).
3) If it is determined in step S161 that the key is the ON selection key, the data stored in the tracking operation setting table 42 is updated to the data corresponding to the ON selection key (step S164).

[0024]

However, in the evaluation of the above-mentioned electronic equipment operated by the output voltage from the conventional multi-output DC power supply, how the characteristics change when the supplied power supply voltage fluctuates is evaluated. It is done by or. For example, (a) an electronic device in the case where the output voltage of the 0 to + αV output terminal and the output voltage of the 0 to −αV output terminal increase and decrease in the same direction in absolute values while the output voltage of the 0 to + βV output terminal is constant. (B) characteristics of the electronic device when the output voltage of the 0 to + βV output terminal, the output voltage of the 0 to + αV output terminal, and the output voltage of the 0 to −αV output terminal increase and decrease in the same direction in absolute value; (C) 0 to + β
0 to + αV, contrary to the direction of increase or decrease of the output voltage of the V output terminal
The evaluation is made based on the characteristics of the electronic device when the output voltage of the output terminal and the output voltage of the 0 to -αV output terminal increase and decrease in the same direction in absolute value.

In the conventional multi-output DC power supply device, the above-mentioned (a) is dealt with by turning on the tracking operation and making the output voltage of 0 to + αV and the output voltage of 0 to −αV variable. can do. For the above (b) and (c), the tracking operation is turned on, and the output voltage of 0 to + αV and 0 to −αV
Can be dealt with by varying the output voltage of 0 to + βV after the output voltage of

However, in the cases (b) and (c), the output voltage of 0 to + αV and the output voltage of 0 to −αV can be simultaneously varied by the dual tracking function. There is a problem that the output voltage of + βV cannot be varied.

Thus, the output voltage of 0 to + βV,
In order to simultaneously vary the output voltage of + αV and the output voltage of 0 to −αV, two conventional multi-output DC power supplies are prepared, and a voltage variable operation unit of the two multi-output DC power supplies, for example, a rotary encoder Must be operated at the same time, and there is a problem that the operation is not easy.

The present invention provides a multi-output DC power supply device capable of simultaneously selecting an increase / decrease direction of an output voltage output from one or more output terminals whose output is desired to be variable and enabling the output voltage to be simultaneously performed by a single voltage changing operation. Aim.

[0029]

A multi-output DC power supply according to the present invention is a multi-output DC power supply for transmitting DC output from a plurality of output terminals, and designates one or more output terminals whose DC output is desired to be varied. A variable output terminal instruction unit, an output value setting unit for setting a variable DC output value and an increasing / decreasing direction of the DC output value, a tracking operation setting unit for selecting operation or stop of a tracking operation, and a variable output terminal instruction unit. When the output value increase / decrease selection instructing means for selecting and instructing one of the output value increasing direction and the decreasing value for each output value of the designated output terminal and the stop of the tracking operation by the tracking operation setting means are selected. The output to the output terminal designated by the variable output terminal designating means can be increased or decreased in the direction of the DC output value set by the output value setting operation of the output value setting means. When the first control means for changing based on the DC output value to be changed and the operation of the tracking operation by the tracking operation setting means are selected, and the output value increase / decrease selection instruction means is instructed to select the output value increasing direction, the variable The output to the output terminal instructed by the output terminal instructing means is changed based on the DC output value that is changed in the direction of increase or decrease of the DC output value set by the output value changing operation of the output value setting means, and the tracking operation setting means is changed. When the operation of the tracking operation is selected, and the output value decreasing direction is selected and instructed by the output value increase / decrease selection instructing means, the output to the output terminal instructed by the variable output terminal instructing means is output to the output value setting means. A second method of changing based on a DC output value that is changed in a direction opposite to a direction in which the DC output value is increased or decreased by an output value variable operation. Characterized by comprising a control means.

According to the multi-output DC power supply device of the present invention, when the tracking operation setting means has selected to stop the tracking operation, the output to the output terminal designated by the variable output terminal designating means is changed to the output value. The DC output value is changed under the control of the first control means based on the DC output value that changes in the increasing / decreasing direction of the DC output value set by the output value changing operation of the setting means.

Further, according to the multi-output DC power supply device of the present invention, when the operation of the tracking operation by the tracking operation setting means is selected and the output value increasing direction is instructed by the output value increase / decrease selection instructing means. ,
The output to the output terminal instructed by the variable output terminal instructing means is controlled by the second control means based on the DC output value that changes in the direction of increase or decrease of the DC output value set by the output value changing operation of the output value setting means. Under the control, the operation of the tracking operation by the tracking operation setting means is selected, and when the output value decrease direction is selected and instructed by the output value increase / decrease selection instructing means, it is instructed by the variable output terminal instructing means. The output to the output terminal is changed under the control of the second control means based on the DC output value that changes in the direction opposite to the increase / decrease direction of the DC output value set by the output value changing operation of the output value setting means. Let me do.

Therefore, according to the multi-output DC power supply of the present invention, one or more output terminals whose output is to be varied are selected, the direction of increase or decrease of the output voltage output from the output terminal is selected, and the output voltage is selected. The changes can be made simultaneously by one voltage change operation.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A multi-output DC power supply according to the present invention will be described below with reference to an embodiment.

FIG. 1 is a block diagram showing a configuration of a multiple output DC power supply 1 according to an embodiment of the present invention.

As shown in FIG. 1, a multiple output DC power supply 1 according to one embodiment of the present invention includes an operation unit 2, a control unit 3, and a power supply unit 5.

The operation unit 2 includes an output voltage setting unit 21, a voltage variable output terminal selection unit 22, and a tracking operation setting unit 25, as well as the operation unit 2A, and also specifies the tracking state of the voltage variable output terminal. Tracking A + (increase direction), A- (decrease direction) and A-off corresponding to A output, tracking B + (increase direction), B- (decrease direction) and B-off corresponding to B output, and C output A tracking operation output setting unit 24 having corresponding keys for tracking C + (increase direction), C- (decrease direction) and C-off is provided. The output voltage setting unit 21, the voltage variable output terminal selecting unit 22, and the tracking operation setting unit 25 are the same as those in the case of the operation unit 2A, and descriptions thereof will be omitted to avoid duplication.

The control unit 3 has a memory 4 composed of a CPU 3C and a RAM. The memory 4 includes a voltage variable output setting table 41, a tracking operation setting table 42, and a digital / analog converter (DA) as in the memory 4A.
C) In addition to having setting data tables (A) to (C) 46 to 48, tracking A +, A- and A off,
Tracking B +, B- and B off, Tracking C
Output tracking state setting tables (A) to (C) 4 in which setting data of each key of +, C- and C-off are stored.
3 to 45 are provided. Voltage variable output setting table 41
, Tracking operation setting table 42, digital /
Analog converter (DAC) setting data table (A)-
(C) 46 to 48 are the same as in the case of the memory 4A, and a description thereof will be omitted to avoid duplication.

The power supply unit 5 includes DACs (A) to (C) 51 to
53, and amplifiers 54 to 5 which output the output of the reference voltage using the output voltages of the DACs (A) to (C) as reference voltages.
6, which is the same as the conventional case, and a description thereof will be omitted.

Here, the variable voltage output terminal selecting section 22 and the variable voltage output setting table 41 correspond to the variable output terminal designating means, and the output voltage setting section 21 composed of a rotary encoder is used.
Corresponds to the output value setting means, and the tracking operation setting section 2
5 and the tracking operation setting table 42 correspond to the tracking operation instructing means, and the tracking operation output setting section 24 and the output tracking state setting tables (A) to
(C) 43 to 45 functionally correspond to output value increase / decrease selection instruction means.

When stopping the tracking operation is selected by the tracking operation setting section 25 and the tracking operation setting table 42, the CPU 3C functionally operates the voltage variable output terminal selection section 22 and the voltage variable output setting table 4
The first control for changing the output to the output terminal designated by 1 in accordance with the DC output value that changes in the direction of increase or decrease of the DC output value set by the output value changing operation of the output voltage setting unit 21 Control means corresponding to the means are provided.

The CPU 3C further functionally includes a tracking operation setting section 25 and a tracking operation setting table 4.
2, when the tracking operation is selected and the output value increasing direction is selected by the tracking operation output setting unit 24 and the output tracking state setting tables (A) to (C) 43 to 45, the voltage is varied. A DC output value that changes the output to the output terminal specified by the output terminal selection unit 22 and the voltage variable output setting table 41 in the direction of increase or decrease of the DC output value set by the output value setting operation of the output voltage setting unit 21 And the tracking operation by the tracking operation setting unit 25 and the tracking operation setting table 42 is selected, and the tracking operation output setting unit 24 and the output tracking state setting tables (A) to (C) 43 to 45, when the output value decreasing direction is instructed to be selected, the voltage variable output terminal selecting unit 22 -Pressure output to the output terminal indicated by the variable output setting table 41, the output voltage setting unit 21
Control means corresponding to the second control means for changing based on the DC output value that is changed in the direction opposite to the increasing / decreasing direction of the DC output value set by the output value changing operation.

The multi-output power supply device 1 configured as described above
2 will be described with reference to flowcharts shown in FIGS.

The A, B, and C output keys of the voltage variable output terminal selector 22 corresponding to the A, B, and C outputs manually, the tracking operation setting unit 25, and the tracking operation output setting unit 2
4, or the rotary encoder of the output voltage setting unit 21 is operated (step S1). By this operation, the control unit 3A is interrupted by an output from the operation unit 2 (step S2), and which key or the like operated on the operation unit 2 is detected (step S3). When it is determined by this detection that the rotary encoder has been operated, the direction of increase and decrease of the set voltage and the number of pulses are detected based on the output signal of the rotary encoder (step S4), and stored in the voltage variable output setting table 41. With reference to the data (step S5), it is determined which of the A, B, and C outputs stored in the voltage variable output setting table 41 has a variable voltage value (step S6).

If it is determined in step S6 that the C output is variable, the tracking operation setting table 4
2 is referred to (step S2).
7) It is determined whether the data stored in the tracking operation setting table 42 is data for the ON selection key or data for the OFF selection key (step S).
8).

If it is determined in step S8 that the data corresponds to the off-selection key, the data stored in the DAC setting data table (C) 48 is referred to after step S8 (step S9) and detected in step S4. The data stored in the DAC setting data table (C) 48 is incremented / subtracted based on the increasing / decreasing direction of the set voltage based on the output signal of the rotary encoder and the number of pulses (step S10), and the result of the increment / subtraction processing is performed. DAC setting data table (C) 48
Is updated (step S).
11).

Subsequent to step S11, the updated DA
The data stored in the C setting data table (C) 48 is sent to the DAC (C) 56 (step S12),
It is converted to an analog voltage by the DAC (C) 53,
The output voltage of (C) 53 is amplified by the amplifier (C) 56 and sent out as an output (step S13).

If it is determined in step S6 that the output A is variable, the data stored in the tracking operation setting table 42 is referred to (step S21) as shown in FIG. It is determined whether the stored data is data for performing a tracking operation (the ON selection key is pressed) or not (step S22). If it is determined in step S22 that the data is OFF (the OFF selection key is pressed), The data stored in the DAC setting data table (A) 46 is referred to (step S23), and the DAC setting data is determined based on the direction of increase and decrease of the set voltage based on the output signal of the rotary encoder detected in step S4 and the number of pulses. The data stored in the table (A) 46 is incremented / subtracted (step S3). -Up S24), updating of data stored in value based on the increase or decrease calculation processing result to the DAC setting data table (A) 46 is made (step S2
5).

Following step S25, the updated DA
The data stored in the C setting data table (A) 46 is sent to the DAC (A) 51 (step S26).
It is converted to an analog voltage by the DAC (A) 51,
The output voltage of (A) 51 is amplified by the amplifier (A) 54 and sent out as an output (step S27).

If it is determined in step S6 that the B output is variable, the data stored in the tracking operation setting table 42 is referred to (step S31) as shown in FIG. It is determined whether the stored data is data for performing a tracking operation (the ON selection key is pressed) or not (step S32), and it is determined in step S32 that the data is OFF (the OFF selection key is pressed) data. In this case, the data stored in the DAC setting data table (B) 47 is referred to (step S33), and based on the increasing / decreasing direction of the set voltage and the number of pulses based on the output signal of the rotary encoder detected in step S4. DAC
The data stored in the setting data table (B) 47 is subjected to increase / subtraction processing (step S34), and the data stored in the DAC setting data table (B) 47 is updated to a value based on the result of the increase / subtraction processing. Is performed (step S35).

Following step S35, the updated DA
The data stored in the C setting data table (B) 47 is sent to the DAC (B) 52 (step S36),
It is converted to an analog voltage by the DAC (B) 52,
The output voltage of (B) 52 is amplified by the amplifier (B) 55 and sent out as an output (step S37).

When it is determined in step S8, step S22, or step S32 that a tracking operation is to be performed (the ON selection key has been pressed), as shown in FIG. 6, step S8, step S22, or step S22 is performed.
Next to 32, the data stored in the output tracking state setting table (A) 43 is referred to (step S41), and the contents of the output tracking state setting table (A) 43 are checked (step S4).
2).

In step S42, tracking A-
If it is determined that the data is when the key was operated,
The increasing / decreasing direction based on the output signal of the rotary encoder detected in step S4 is reversed (step S4).
3) Referring to the data stored in the DAC setting data table (A) 46 (step S44), the DAC is set based on the (inverted) increasing / decreasing direction of the set voltage based on the output signal of the rotary encoder and the number of pulses. The data stored in the setting data table (A) 46 is incremented / subtracted (step S45), and the data stored in the DAC setting data table (A) 46 is updated to a value based on the result of the increment / subtraction processing. Is performed (step S46).

Following step S46, the updated DA
The data stored in the C setting data table (A) 46 is sent to the DAC (A) 51 (step S47).
It is converted to an analog voltage by the DAC (A) 51,
The output voltage of (A) 51 is amplified by the amplifier (A) 54 and sent out as an output (step S48).

In step S42, tracking A +
If it is determined that the data is when the key was operated,
Step S43 is skipped, and steps S44 to S48 are executed. Therefore, in this case, the increasing / decreasing direction based on the detected output signal of the rotary encoder is not reversed, and the increasing / subtracting process is performed based on the increasing / decreasing direction based on the output signal of the rotary encoder.

If it is determined in step S42 that the data is obtained when the tracking A off key is operated, the data stored in the output tracking state setting state table (B) 44 is referred to after step S42. (Step S51), the contents of the output tracking state setting table (B) 44 are checked (Step S52).

In step S52, tracking B-
If it is determined that the data is when the key was operated,
The increasing / decreasing direction based on the output signal of the rotary encoder detected in step S4 is reversed (step S5).
3) The data stored in the DAC setting data table (B) 47 is referred to (step S54), and the DAC is set based on the (inverted) increasing / decreasing direction of the set voltage based on the output signal of the rotary encoder and the number of pulses. The data stored in the setting data table (B) 47 is subjected to increase / subtraction processing (step S55), and the data stored in the DAC setting data table (B) 47 is updated to a value based on the result of the increase / subtraction processing. Is performed (step S56).

Subsequent to step S56, the updated DA
The data stored in the C setting data table (B) 47 is sent to the DAC (B) 52 (step S57),
It is converted to an analog voltage by the DAC (B) 52,
The output voltage of (B) 52 is amplified by the amplifier (B) 55 and sent out as an output (step S58).

In step S52, tracking B +
If it is determined that the data is when the key was operated,
Step S53 is skipped, and steps S54 to S58 are executed. Therefore, in this case, the increasing / decreasing direction based on the detected output signal of the rotary encoder is not reversed, and the increasing / subtracting process is performed based on the increasing / decreasing direction based on the output signal of the rotary encoder.

If it is determined in step S52 that the data is obtained when the tracking B off key is operated, the data stored in the output tracking state setting state table (C) 45 is referred to after step S52. (Step S61) The contents of the output tracking state setting table (C) 45 are checked (Step S62).

In step S62, the tracking C-
If it is determined that the data is when the key was operated,
The increasing / decreasing direction based on the output signal of the rotary encoder detected in step S4 is reversed (step S6).
3) Referring to the data stored in the DAC setting data table (C) 48 (step S64), the DAC is set based on the (inverted) increasing / decreasing direction of the set voltage based on the output signal of the rotary encoder and the number of pulses. The data stored in the setting data table (C) 48 is subjected to increase / subtraction processing (step S65), and the data stored in the DAC setting data table (C) 48 is updated to a value based on the result of the increase / subtraction processing. Is performed (step S66).

Following step S66, the updated DA
The data stored in the C setting data table (C) 48 is sent to the DAC (C) 53 (step S67).
It is converted to an analog voltage by the DAC (C) 53,
The output voltage of (C) 53 is amplified by the amplifier (C) 56 and sent out as an output (step S68).

In step S62, the tracking C +
If it is determined that the data is when the key was operated,
Step S63 is skipped, and steps S64 to S68 are executed. Therefore, in this case, the increasing / decreasing direction based on the detected output signal of the rotary encoder is not reversed, and the increasing / subtracting process is performed based on the increasing / decreasing direction based on the output signal of the rotary encoder.

If it is determined in step S62 that the data is obtained when the tracking C off key is operated, the process ends.

When it is detected in step S3 that the operated keys are the A, B, and C output keys, an update routine for data stored in the voltage variable setting table shown in FIG. 9 is executed.

When the routine for updating the data stored in the voltage variable setting table starts, the voltage variable output setting table 4
1 is referred to (step S71),
It is checked whether the operated key is an A, B, or C output key (step S72).

If it is determined in step S72 that the A output key has been operated, the data stored in the voltage variable output setting table 41 is rewritten to the data obtained when the A output key was operated (step S73). ). If it is determined in step S72 that the B output key has been operated, the data stored in the voltage variable output setting table 41 is rewritten to the data obtained when the B output key was operated (step S72).
74). If it is determined in step S72 that the C output key has been operated, the data stored in the voltage variable output setting table 41 is rewritten to the data when the C output key was operated (step S72).
75).

If it is detected in step S3 that the operated key is a selection key in the tracking operation setting section 25, that is, an ON selection key or an OFF selection key, it is stored in the tracking operation setting table 42 shown in FIG. A data update routine is executed.

When the routine for updating the data stored in the tracking operation setting table 42 is entered, the data stored in the tracking operation setting table 42 is referred to (step S76), and the operated selection key is turned on by the ON selection key. Or an off selection key is detected (step S7).
7) If it is determined that the key is the off-selection key, the data stored in the tracking operation setting table 42 is updated to the data for the off-selection key (step S78).
If it is determined in step S77 that the key is the ON selection key, the data stored in the tracking operation setting table 42 is updated to data corresponding to the ON selection key (step S79).

In the key detection of the operation unit 2 in step S3, when it is determined that the key of the tracking operation output setting unit 24 has been operated, as shown in FIG. 11, tracking A ±, A off, B ±, B
It is detected which of the OFF, C ±, and C OFF keys has been operated (step S81).

In step S81, tracking A
When it is detected that the +, A-, and A-off keys are operated, the storage contents of the output tracking state setting table (A) 43 are updated based on the outputs of the tracking A +, A-, and A-off keys. A tracking state setting table (A) 43 storage content update routine is executed.

Output tracking state setting table (A)
43 When the storage content update routine starts, the tracking A
It is determined which of the +, A-, and A-off keys has been operated (step S82). If it is determined in step S82 that the tracking A off key has been operated, the data stored in the output tracking state setting table (A) 43 is rewritten to the data obtained when the tracking A off key was operated (step S8).
3. Step S86). If it is determined in step S82 that the tracking A + key has been operated, the data stored in the output tracking state setting table (A) 43 is rewritten to the data when the tracking A + key was operated (step S84, step S84). S8
6). If it is determined in step S82 that the tracking A-key has been operated, the data stored in the output tracking state setting table (A) 43 is rewritten to the data when the tracking A-key was operated (step S85). , Step S86).

In step S81, tracking B
When it is detected that the +, B-, B-off keys are operated, the storage contents of the output tracking state setting table (B) 44 are updated based on the tracking B +, B-, B-off keys. The output tracking state shown in FIG. A setting table (B) 44 storage content update routine is executed.

Output tracking state setting table (B)
When the storage content update routine is entered, the tracking B
It is determined which of the +, B-, and B-off keys has been operated (step S92). If it is determined in step S92 that the tracking B off key has been operated, the data stored in the output tracking state setting table (B) 44 is rewritten to the data when the tracking B off key was operated (step S9).
3. Step S96). If it is determined in step S92 that the tracking B + key has been operated, the data stored in the output tracking state setting table (B) 44 is rewritten to the data obtained when the tracking B + key was operated (step S94, step S94). S9
6). If it is determined in step S92 that the tracking B-key has been operated, the data stored in the output tracking state setting table (B) 44 is rewritten to the data obtained when the tracking B-key was operated (step S95). , Step S96).

In step S81, tracking C
When it is detected that the +, C- and C-off keys are operated, the storage contents of the output tracking state setting table (C) 45 are updated based on the tracking C +, C- and C-off keys. The output tracking state shown in FIG. A setting table (C) 45 storage content update routine is executed.

Output tracking state setting table (C)
When the storage content update routine is entered, the tracking C
It is determined which of the +, C-, and C off keys has been operated (step S102). If it is determined in step S102 that the tracking C off key has been operated, the data stored in the output tracking state setting table (C) 45 is rewritten to the data obtained when the tracking C off key was operated (step S1).
03, step S106). If it is determined in step S102 that the tracking C + key has been operated, the data stored in the output tracking state setting table (C) 45 is rewritten to the data obtained when the tracking C + key was operated (step S104, step S104). S106). If it is determined in step S102 that the tracking C-key has been operated, the data stored in the output tracking state setting table (C) 45 is rewritten to the data obtained when the tracking C-key was operated (step S105). , Step S10
6).

In the above-described multi-output DC power supply 1, the number of outputs is three, that is, A, B, and C outputs. However, a multi-output DC power supply having other outputs may be similarly configured. it can.

Although the above-described multi-output DC power supply device 1 has been described as having a constant voltage output, a multi-output DC power supply having a constant current output can be similarly configured.

[0078]

As described above, according to the multi-output DC power supply according to the present invention, one or more output terminals whose output is desired to be varied are selected, and the output voltage output from the output terminal is increased or decreased. There is an effect that the selection and the change of the output voltage can be performed simultaneously by one voltage change operation.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a multiple output DC power supply device according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention.

FIG. 3 is a flowchart for explaining an operation of the multiple output DC power supply device according to the embodiment of the present invention;

FIG. 4 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention;

FIG. 5 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention.

FIG. 6 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention.

FIG. 7 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention;

FIG. 8 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention.

FIG. 9 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention.

FIG. 10 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention.

FIG. 11 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention.

FIG. 12 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention.

FIG. 13 is a flowchart for explaining the operation of the multiple output DC power supply device according to the embodiment of the present invention.

FIG. 14 is a block diagram showing a configuration of a conventional multi-output DC power supply device.

FIG. 15 is a flowchart for explaining the operation of a conventional multiple output DC power supply device.

FIG. 16 is a flowchart for explaining the operation of a conventional multiple output DC power supply device.

FIG. 17 is a flowchart for explaining the operation of a conventional multi-output DC power supply device.

FIG. 18 is a flowchart for explaining the operation of a conventional multiple output DC power supply device.

FIG. 19 is a flowchart for explaining the operation of a conventional multi-output DC power supply device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Multi-output DC power supply 2 Operation part 3 Control part 4 Memory 5 Power supply part 3C CPU 21 Output voltage setting part 22 Voltage variable output terminal selection part 24 Tracking operation output setting part 25 Tracking operation setting part 41 Voltage variable output setting table 42 Tracking Operation setting table 43-45 Output tracking state setting table (A)
~ (C) 46 ~ 48 DAC setting tables (A) ~ (C) 51 ~ 53 DAC (A) ~ (C) 54 ~ 56 Amplifier

Claims (1)

[Claims] 1. A multi-output DC power supply for transmitting a DC output from a plurality of output terminals, a variable output terminal indicating means for specifying one or more output terminals whose DC output is to be varied, a variable DC output value and the DC output value. Output value setting means for setting the direction of increase or decrease of the output value; tracking operation setting means for selecting the operation of tracking operation and stop; output for each output value of the output terminal designated by the variable output terminal designating means. Output value increase / decrease selection instructing means for selecting and instructing one of the value increasing direction and decreasing direction; and output to the output terminal designated by the variable output terminal instructing means when the tracking operation stop means is selected to stop the tracking operation. Is changed based on a DC output value that changes in the direction of increase or decrease of the DC output value set by the output value changing operation of the output value setting means. When the operation of the tracking operation by the tracking operation setting means is selected and the output value increasing direction is selected and instructed by the output value increase / decrease selection instructing means, the output to the output terminal instructed by the variable output terminal instructing means is output. , The output value is changed based on the DC output value that changes in the direction of increase or decrease of the DC output value set by the output value changing operation of the output value setting means, the operation of the tracking operation by the tracking operation setting means is selected, and the output value increase or decrease is selected. When the output value decreasing direction is selected and instructed by the instructing means, the output to the output terminal instructed by the variable output terminal instructing means is changed to the DC output value increasing / decreasing direction set by the output value varying operation of the output value setting means. And a second control means for changing based on a DC output value variable in a direction opposite to the above. Apparatus.