CN108132445B - Detection device of linear power supply - Google Patents
Detection device of linear power supply Download PDFInfo
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- CN108132445B CN108132445B CN201711391195.7A CN201711391195A CN108132445B CN 108132445 B CN108132445 B CN 108132445B CN 201711391195 A CN201711391195 A CN 201711391195A CN 108132445 B CN108132445 B CN 108132445B
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- 238000001514 detection method Methods 0.000 title claims abstract description 68
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 25
- 239000003990 capacitor Substances 0.000 claims description 20
- 229910052736 halogen Inorganic materials 0.000 claims description 6
- 150000002367 halogens Chemical class 0.000 claims description 6
- DIDLWIPCWUSYPF-UHFFFAOYSA-N microcystin-LR Natural products COC(Cc1ccccc1)C(C)C=C(/C)C=CC2NC(=O)C(NC(CCCNC(=N)N)C(=O)O)NC(=O)C(C)C(NC(=O)C(NC(CC(C)C)C(=O)O)NC(=O)C(C)NC(=O)C(=C)N(C)C(=O)CCC(NC(=O)C2C)C(=O)O)C(=O)O DIDLWIPCWUSYPF-UHFFFAOYSA-N 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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Abstract
The invention discloses a detection device of a linear power supply, which comprises a power supply input line, a socket, a connector, a detection circuit and a shell, wherein the power supply input line is connected with the socket; the detection circuit comprises a voltage detection circuit for detecting the linear power supply voltage, a load switching circuit for switching loads, a voltage setting circuit for presetting qualified voltage, an indication circuit for displaying the state of the linear power supply voltage and a control chip, wherein the voltage detection circuit, the load switching circuit, the voltage setting circuit and the indication circuit are respectively and electrically connected with the control chip. By adopting the invention, the qualified voltage value can be adjusted according to the actual requirement, the parameters which cannot be detected by the detection device before are detected, whether the voltage is qualified or not is automatically displayed, the precision is high, and the power supply test of a power supply manufacturer is greatly facilitated.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a detection device of a linear power supply.
Background
With the rapid development of technology, the application of linear power supplies is also becoming wider and wider, and the good effect of linear power supplies is on whether the equipment can work normally. At present, a linear power supply detection device usually adopts a voltmeter and an ammeter to detect, however, some parameter anomalies cannot be found, the alternating current input short circuit soft protection function is avoided, and the problems of strong spark, explosion safety and tripping exist in the test.
Therefore, a safe, high-precision, simple and quick detection device is provided for the production and detection of the linear power supply, so that the actual requirements of linear power supply manufacturers are better met, and the problem to be solved is urgent.
Disclosure of Invention
The invention aims to solve the technical problem of providing the detection device of the linear power supply, which has a simple structure and high precision, can adjust the qualified voltage value according to actual requirements, detect the parameters which cannot be detected by the detection device before and automatically display whether the voltage is qualified or not.
In order to solve the technical problems, the invention provides a detection device for a linear power supply, which comprises a power input wire, a socket, a connector, a detection circuit and a shell, wherein the detection circuit is packaged in the shell, the power input wire is connected with the detection circuit and extends out of the shell to be connected with an external power supply, the socket is connected with the detection circuit and is arranged outside the shell to be connected with an input end of the linear power supply, and the connector is connected with the detection circuit and extends out of the shell to be connected with an output end of the linear power supply; the detection circuit comprises a voltage detection circuit for detecting the linear power supply voltage, a load switching circuit for switching loads, a voltage setting circuit for presetting qualified voltage, an indication circuit for displaying the state of the linear power supply voltage and a control chip, wherein the voltage detection circuit, the load switching circuit, the voltage setting circuit and the indication circuit are respectively and electrically connected with the control chip.
As an improvement of the scheme, the load switching circuit comprises a second control switch, an idle circuit and a load circuit, wherein the second control switch is connected with the idle circuit or the load circuit, and the idle circuit and the load circuit are connected with a control chip respectively.
As an improvement of the above scheme, the load circuit includes a pulse control circuit, a first load and a second load, and the pulse control circuit is connected with the first load and the second load respectively.
As an improvement of the scheme, the voltage detection circuit comprises a first resistor and a second resistor which are connected in series; one end of the first resistor is connected with a power port of the control chip, and the other end of the first resistor is connected with a fourth RC port of the control chip; one end of the second resistor is grounded, and the other end of the second resistor is connected with a fourth RC port of the control chip.
As an improvement of the above scheme, the voltage setting circuit includes a first control switch and a fourth resistor connected in series; one end of the first control switch is grounded, and the other end of the first control switch is connected with a fifth RC port of the control chip; one end of the fourth resistor is connected with the power port of the control chip, and the other end of the fourth resistor is connected with the fifth RC port of the control chip.
As an improvement of the scheme, the indicating circuit comprises a light emitting diode group and a third resistor, wherein the positive electrode of the diode group is connected with the control chip, and the negative electrode of the diode group is grounded through the third resistor.
As an improvement of the above scheme, the connector is connected with a power port of the control chip.
As an improvement of the scheme, the detection circuit further comprises a voltage stabilizing circuit, wherein the voltage stabilizing circuit comprises a voltage stabilizing chip, a first capacitor and a second capacitor; the input end of the voltage stabilizing circuit is connected with the connector, the output end of the voltage stabilizing circuit is connected with the power port of the control chip, and the grounding end of the voltage stabilizing circuit is grounded; one end of the first capacitor is connected with the input end of the voltage stabilizing circuit, and the other end of the first capacitor is grounded; one end of the second capacitor is connected with the output end of the voltage stabilizing circuit, and the other end of the second capacitor is grounded.
As an improvement of the scheme, the detection circuit further comprises a reset circuit, the reset circuit comprises a fifth resistor, one end of the fifth resistor is connected with a power port of the control chip, and the other end of the fifth resistor is connected with an MCLR port of the control chip.
As an improvement of the scheme, a halogen lamp is connected in series between the power input line and the socket.
The implementation of the invention has the beneficial effects that:
the connector, the voltage detection circuit, the load switching circuit, the voltage setting circuit, the indicating circuit and the control chip are packaged in the shell to form a box structure, and the portable electronic device is small in size and convenient to carry.
The voltage setting circuit and the load switching circuit are introduced in the invention to realize the setting and detection of the qualified voltage value, so that a user can adjust the qualified voltage value according to actual requirements, the precision is high, the flexibility is strong, and the parameters which cannot be detected by a detection device before can be detected.
The invention introduces the indicating circuit to automatically display whether the voltage to be detected is qualified or not, can detect the parameter which cannot be detected by the detecting device before, automatically displays whether the voltage is qualified or not, has simple judgment and strong intuitiveness, and is greatly convenient for the power supply test of a linear power supply manufacturer.
The invention is also provided with the voltage stabilizing circuit and the reset circuit, realizes constant output of voltage, can be suitable for detecting the power supply voltage within the range of DC 5V-DC 12V, and effectively improves the stability of the invention.
Drawings
FIG. 1 is a schematic diagram of a linear power supply detection device according to the present invention;
FIG. 2 is a schematic diagram of another structure of the linear power supply detection device of the present invention;
FIG. 3 is a circuit diagram of a first embodiment of a detection device for a linear power supply of the present invention;
fig. 4 is a circuit diagram of a second embodiment of the detection device for linear power supply of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present invention, are used only with reference to the drawings of the present invention, and are not meant to be limiting in any way.
Referring to fig. 1 and 2, fig. 1 and 2 show a specific structure of a detecting device for a linear power supply according to the present invention, which includes a power input line 6, a socket 7, a connector CON1, a detecting circuit and a housing 8, wherein the detecting circuit is encapsulated in the housing 8, the power input line 6 is connected with the detecting circuit and extends out of the housing 8 to access an external power supply, the socket 7 is connected with the detecting circuit and is disposed outside the housing 8 to connect an input end of the linear power supply, and the connector CON1 is connected with the detecting circuit and extends out of the housing 8 to access an output end of the linear power supply. When in use, the power input line 6 is connected with an external power supply so as to supply power for the detection device; the input end of the linear power supply is connected with the detection device through the socket 7, so that electric energy is obtained for normal starting; the output end of the linear power supply outputs voltage to the detection circuit through the connector CON 1; the detection circuit detects the output voltage of the linear power supply, and is convenient to operate. Preferably, the power input line 6 is an ac 220V power input line, and the socket 7 is an ac 220V socket, but not limited thereto.
As shown in fig. 2, the detection circuit includes a voltage detection circuit 2, a load switching circuit 5, a voltage setting circuit 3, an indication circuit 4, and a control chip 1, and the voltage detection circuit 2, the load switching circuit 5, the voltage setting circuit 3, and the indication circuit 4 are electrically connected to the control chip 1, respectively. Wherein:
the voltage detection circuit 2 is used for detecting the voltage of the linear power supply.
The load switching circuit 5 is used for switching loads.
The voltage setting circuit 3 is used for presetting qualified voltage, and a user can flexibly adjust the qualified voltage value through the voltage setting circuit, so that the voltage setting circuit is applicable to voltage detection within the range of DC 5V-DC 12V, and is greatly convenient for power supply testing of power supply manufacturers, and has high precision and strong universality.
The indication circuit 4 is used for displaying the linear power supply voltage state. When the linear power supply voltage is qualified, the indicating circuit 4 sends out a qualified indicating signal, and when the linear power supply voltage is unqualified, the indicating circuit 4 sends out an unqualified indicating signal, so that the display is convenient and the intuitiveness is strong.
The control chip 1 is preferably, but not limited to, PIC16F 676.
Further, a halogen lamp 9 is connected in series between the power input line 6 and the socket 7, and has a short-circuit protection function. It should be noted that, the halogen lamp 9 needs to be turned on by a large current, and the current of the normal linear power adapter is small, which is insufficient to turn on the halogen lamp 9; when the input of the linear power adapter is short-circuited, the halogen lamp 9 is lit, avoiding the problems of strong sparks, explosion safety and tripping caused by the short circuit.
Therefore, the connector, the voltage detection circuit, the load switching circuit, the voltage setting circuit, the indicating circuit and the control chip are packaged in the shell to form the box structure, so that the portable electronic device is small in size and convenient to carry.
Referring to fig. 3, fig. 3 shows a first embodiment of a detection device for a linear power supply according to the present invention, which includes a connector CON1, a voltage detection circuit 2, a load switching circuit 5, a voltage setting circuit 3, an indication circuit 4, and a control chip N2, specifically:
the control chip N2 is provided with a power supply port VDD, a ground port VSS, an MCLR port RA3/MCLR (reset/program port), an RA port RA0 (port a register port), a first RC port RC1 (port c register port), a second RC port RC2 (port c register port), a third RC port RC3 (port c register port), a fourth RC port RC4 (port c register port) and a fifth RC port RC5 (port c register port), and correspondingly, the control chip N2 may be further provided with other ports to meet the user requirements.
The output end of the connector CON1 is connected with the power port VDD of the control chip N2, and the ground is grounded.
The load switching circuit 5 comprises a second control switch S2, an idle circuit and a load circuit, wherein the second control switch S2 is connected with the idle circuit or the load circuit, and the idle circuit and the load circuit are respectively connected with the control chip N2. The no-load circuit comprises a sixth resistor R6 and a seventh resistor R7 which are mutually connected in series, one end of the sixth resistor R6 is connected with a ground port VSS of the control chip N2, and the other end of the sixth resistor R6 is movably connected with the second control switch S2 through the seventh resistor R7; the load circuit comprises a pulse control circuit, a first load and a second load, and the pulse control circuit is connected with the first load and the second load respectively; specifically, the first load is a ninth resistor R9, the second load is a tenth resistor R10, the pulse control circuit includes an eighth resistor 8 and an NPN transistor Q1, a base of the NPN transistor Q1 is connected to the first RC port RC1 of the control chip N2 through the eighth resistor R8, an emitter of the NPN transistor Q1 is connected to the tenth resistor R10 and grounded, and a collector of the NPN transistor Q1 is connected to the ninth resistor R9. It should be noted that, the user may flexibly connect the no-load circuit or the load circuit through the second control switch S2, so as to effectively set/detect the voltage in the no-load or load voltage range.
The voltage detection circuit 2 comprises a first resistor R1 and a second resistor R2 which are connected in series; one end of the first resistor R1 is connected with a power port VDD of the control chip N2, and the other end of the first resistor R1 is connected with a fourth RC port RC4 of the control chip N2; one end of the second resistor R2 is grounded, and the other end of the second resistor R2 is connected with a fourth RC port RC4 of the control chip N2. The first resistor R1 and the second resistor R2 have a voltage dividing function, and a plurality of voltage dividing resistors may be connected in series in the voltage detection circuit 2 according to actual situations.
The voltage setting circuit 3 comprises a first control switch S1 and a fourth resistor R4 which are mutually connected in series; one end of the first control switch S1 is grounded, and the other end of the first control switch S1 is connected with a fifth RC port RC5 of the control chip N2; one end of the fourth resistor R4 is connected to the power port VDD of the control chip N2, and the other end is connected to the fifth RC port RC5 of the control chip N2. It should be noted that, the user can start or close the voltage setting circuit 3 through the first control switch S1, so as to realize adjustment of the qualified voltage value, and the flexibility is strong.
The indication circuit 4 comprises a light emitting diode group and a third resistor R3, wherein the positive electrode of the diode group is connected with the control chip N2, and the negative electrode of the diode group is grounded through the third resistor R3. The light emitting diode group comprises a first diode LED1 and a second diode LED2 which are connected in parallel, wherein the positive electrode of the first diode LED1 is connected with a third RC port RC3 of the control chip N2, the negative electrode of the first diode LED is grounded through a third resistor R3, the positive electrode of the second diode LED2 is connected with a second RC port RC2 of the control chip N2, and the negative electrode of the second diode LED is grounded through the third resistor R3. When the linear power supply voltage is qualified, the first diode LED1 and the second diode LED2 send out qualified indication signals (such as a lamp on), and when the linear power supply voltage is unqualified, the indication circuit sends out unqualified indication signals (such as a lamp off/flash/slow flash), so that the display is convenient and the intuitiveness is high. Specifically, the first diode LED1 may emit red light, the second diode LED2 may emit blue light, the red light may be on for a long time when the linear power supply voltage is qualified, the blue light may be on for a long time, the red light may be on for a slow time when the linear power supply voltage is high, the red light may be on for a fast time when the linear power supply voltage is low, and the red light may be off when the linear power supply is not at voltage.
The first resistor R1, the second resistor R2, the sixth resistor R6 and the seventh resistor R7 have large resistance values (megaohm), and the linear power supply corresponds to an idle test when the second control switch S2 is not pressed; the ninth resistor R9 and the tenth resistor R10 have small resistance values, the tenth resistor R10 is set as a first load, and when the second control switch S2 is pressed, the first load is increased, the ninth resistor R9 is set as a second load, and the increase of the second load is controlled by the control chip in a pulse manner through the eighth resistor R8 and the NPN transistor Q1. Therefore, the first load is connected through the second control switch S2, and the second load is connected through the control chip N2 in a pulse mode, wherein a comparator is arranged in the control chip N2, the control chip N2 can detect the problem that the open circuit of a single diode of the rectifier bridge, the open circuit of the energy storage circuit and the like cannot be judged through voltage by naked eyes through comparing the idle voltage with the load voltage variation (judging whether the difference value between the idle voltage and the load voltage is smaller than a preset threshold value, if the difference value is smaller than the threshold value, the difference value is normal, and if the difference value is larger than or equal to the threshold value, the difference value is abnormal), and can automatically display whether the voltage is qualified or not, and the judgment is simple.
When the user needs to set the safe voltage value, the standard power supply is connected into the detection circuit through the connector CON1, the first control switch S1 of the voltage setting circuit is pressed to enable the voltage setting circuit to be communicated, the second control switch S2 is not pressed to enable the no-load circuit to be communicated, and at the moment, the control chip N2 collects and stores the voltage of the standard linear power supply under the no-load voltage range through the voltage detection circuit 2 so as to set the safe voltage value under the no-load condition. Then, the second control switch S2 is pressed to connect the load circuit, the first control switch S1 of the voltage setting circuit is pressed to connect the voltage setting circuit, and at this time, the control chip N2 collects and stores the voltage of the standard linear power supply in the loaded voltage range through the voltage detection circuit 2, so as to realize the setting of the safe voltage value under the loaded condition.
When a user needs to detect the voltage of the linear power supply to be detected, the first control switch S1 of the voltage setting circuit 3 is required to be disconnected to disconnect the voltage setting circuit 3, the second control switch S2 is not pressed to connect the idle circuit, then the linear power supply to be detected is connected into the detection circuit through the connector CON1, at this time, the control chip N2 detects the voltage of the linear power supply to be detected through the voltage detection circuit 2, when the linear voltage to be detected is detected to be qualified, the indication circuit 4 is conducted, the red light is long and bright, when the linear voltage to be detected is detected to be unqualified, the red light is slowly flashed/flash/unlit (when the linear power supply voltage is high, the red light is slowly flashed, when the linear power supply voltage is low, and when the linear power supply is not voltage, the red light is unlit); then, the second control switch S2 is pressed to connect the load circuit, at this time, the control chip N2 detects the voltage of the linear power supply to be tested again (i.e. reads the first voltage) through the voltage detection circuit 2, when detecting that the linear power supply to be tested is qualified, the control chip N2 controls the increase of the second load through pulses and reads the second voltage, when the difference between the first voltage and the second voltage is smaller than the preset threshold, the indication circuit 4 is turned on, the blue light is on for a long time, when the difference between the first voltage and the second voltage is not smaller than the preset threshold, the red light is on/off slowly (when the voltage of the linear power supply is high, the red light is on slowly, when the voltage of the linear power supply is low, the red light is off); when the linear voltage to be detected is detected to be unqualified, the red light is slowly flashed/fast flashed/unlit (when the linear power supply voltage is high, the red light is slowly flashed, when the linear power supply voltage is low, and when the linear power supply is not voltage, the red light is unlit). Therefore, the invention can rapidly detect whether the voltage of the linear power supply to be detected is qualified or not, and greatly facilitates the power supply test of power supply manufacturers.
In actual production, the electrolytic capacitor of the linear power supply is easy to be inserted reversely, and when the linear power supply is aged, a common detection device cannot detect the problem of the insertion reversely or the cold joint of the electrolytic capacitor; the invention can detect the increase of the second load (the ninth resistor R9) by pulse control; specifically, the control chip N2 may output a high-low level in a pulse manner, output a low level when the control chip N2 reads the first voltage, output a high level when the control chip N2 reads the second voltage, and turn on the second load when the control chip N2 outputs the high level.
Referring to fig. 4, fig. 4 shows a second embodiment of the detecting device for linear power supply of the present invention, which is different from the first embodiment shown in fig. 3 in that the detecting circuit further includes a voltage stabilizing circuit.
The voltage stabilizing circuit comprises a voltage stabilizing chip N1, a first capacitor C1 and a second capacitor C2; the input end VIN of the voltage stabilizing circuit is connected with the connector CON1, the output end Vout is connected with the power port VDD of the control chip N2, and the grounding end GND is grounded; one end of the first capacitor C1 is connected with the input end VIN of the voltage stabilizing circuit, and the other end of the first capacitor C1 is grounded; one end of the second capacitor C2 is connected with the output end Vout of the voltage stabilizing circuit, and the other end of the second capacitor C is grounded. The constant output of the voltage is realized through the voltage stabilizing circuit, and the stability of the invention is effectively improved. The voltage stabilizing chip N1 is preferably HT7333.
Further, the detection circuit further comprises a reset circuit, the reset circuit comprises a fifth resistor R5, one end of the fifth resistor R5 is connected with the power port VDD of the control chip N2, and the other end of the fifth resistor R5 is connected with the MCLR port of the control chip N2. The circuit can be restored to the initial state through the reset circuit, and the stable and reliable operation of the circuit is ensured.
As can be seen from the above, the connector CON1, the voltage detection circuit 2, the load switching circuit 5, the voltage setting circuit 3, the indication circuit 4 and the control chip 1 are packaged in the housing 6 to form a box structure, which is small in size and convenient to carry. Specifically, the voltage setting circuit 3 and the load switching circuit 5 are introduced to realize the setting of the qualified voltage value, so that a user can adjust the qualified voltage value according to actual requirements, and the flexibility is high; the invention introduces the indicating circuit 4 to automatically display whether the voltage to be detected is qualified or not, and can detect the parameter which cannot be detected by the detecting device before, automatically display whether the voltage is qualified or not, has simple judgment and strong intuitiveness, and is greatly convenient for the power supply test of a linear power supply manufacturer.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (8)
1. The detecting device for the linear power supply is characterized by comprising a power input wire, a socket, a connector, a detecting circuit and a shell, wherein the detecting circuit is packaged in the shell, the power input wire is connected with the detecting circuit and extends out of the shell to be connected with an external power supply, the socket is connected with the detecting circuit and is arranged outside the shell to be connected with an input end of the linear power supply, and the connector is connected with the detecting circuit and extends out of the shell to be connected with an output end of the linear power supply;
the detection circuit comprises a voltage detection circuit for detecting the linear power supply voltage, a load switching circuit for switching loads, a voltage setting circuit for presetting qualified voltage, an indication circuit for displaying the state of the linear power supply voltage and a control chip, wherein the voltage detection circuit, the load switching circuit, the voltage setting circuit and the indication circuit are respectively and electrically connected with the control chip;
the load switching circuit comprises a second control switch, an idle circuit and a load circuit, wherein the second control switch is connected with the idle circuit or the load circuit, and the idle circuit and the load circuit are connected and respectively connected with the control chip; the load circuit comprises a pulse control circuit, a first load and a second load, and the pulse control circuit is connected with the first load and the second load respectively;
when the voltage of the linear power supply to be detected is detected, the second control switch is not pressed to enable the idle circuit to be communicated, then the linear power supply to be detected is connected into the detection circuit through the connector, and at the moment, the control chip detects the voltage of the linear power supply to be detected through the voltage detection circuit; then, the second control switch is pressed down to enable the load circuit to be communicated, at the moment, the control chip detects the voltage of the linear power supply to be detected again through the voltage detection circuit and reads the first voltage, when the fact that the linear voltage to be detected is qualified is detected, the control chip controls the increase of the second load through the pulse control circuit and reads the second voltage, and the control chip detects faults through the comparison of the voltage variation.
2. The linear power supply detection apparatus as claimed in claim 1, wherein the voltage detection circuit includes a first resistor and a second resistor connected in series;
one end of the first resistor is connected with a power port of the control chip, and the other end of the first resistor is connected with a fourth RC port of the control chip;
one end of the second resistor is grounded, and the other end of the second resistor is connected with a fourth RC port of the control chip.
3. The linear power supply detection apparatus as claimed in claim 1, wherein the voltage setting circuit includes a first control switch and a fourth resistor connected in series with each other;
one end of the first control switch is grounded, and the other end of the first control switch is connected with a fifth RC port of the control chip;
one end of the fourth resistor is connected with the power port of the control chip, and the other end of the fourth resistor is connected with the fifth RC port of the control chip.
4. The linear power supply detection device according to claim 1, wherein the indication circuit comprises a light emitting diode group and a third resistor, wherein the positive electrode of the diode group is connected with the control chip, and the negative electrode of the diode group is grounded through the third resistor.
5. The linear power supply testing device of claim 1, wherein the connector is connected to a power port of the control chip.
6. The device for detecting a linear power supply according to claim 1, wherein the detecting circuit further comprises a voltage stabilizing circuit, the voltage stabilizing circuit comprising a voltage stabilizing chip, a first capacitor and a second capacitor;
the input end of the voltage stabilizing circuit is connected with the connector, the output end of the voltage stabilizing circuit is connected with the power port of the control chip, and the grounding end of the voltage stabilizing circuit is grounded;
one end of the first capacitor is connected with the input end of the voltage stabilizing circuit, and the other end of the first capacitor is grounded;
one end of the second capacitor is connected with the output end of the voltage stabilizing circuit, and the other end of the second capacitor is grounded.
7. The linear power supply detection apparatus as claimed in claim 1, wherein the detection circuit further comprises a reset circuit, the reset circuit comprising a fifth resistor, one end of the fifth resistor being connected to the power port of the control chip, and the other end being connected to the MCLR port of the control chip.
8. The linear power supply detecting device according to claim 1, wherein a halogen lamp is connected in series between the power supply input line and the socket.
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| CN201711391195.7A CN108132445B (en) | 2017-12-21 | 2017-12-21 | Detection device of linear power supply |
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| CN201711391195.7A CN108132445B (en) | 2017-12-21 | 2017-12-21 | Detection device of linear power supply |
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| CN108132445B true CN108132445B (en) | 2024-02-20 |
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| CN109061523A (en) * | 2018-09-05 | 2018-12-21 | 深圳市实益达工业有限公司 | A kind of power detecting system |
| CN112394242B (en) * | 2019-08-19 | 2024-06-21 | 北京六一生物科技有限公司 | Inspection device |
| CN115308646B (en) * | 2022-08-30 | 2024-01-19 | 苏州浪潮智能科技有限公司 | Virtual welding detection device |
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