CN109560810A - A kind of signal level conversion equipment - Google Patents
A kind of signal level conversion equipment Download PDFInfo
- Publication number
- CN109560810A CN109560810A CN201910048734.XA CN201910048734A CN109560810A CN 109560810 A CN109560810 A CN 109560810A CN 201910048734 A CN201910048734 A CN 201910048734A CN 109560810 A CN109560810 A CN 109560810A
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- signal
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017509—Interface arrangements
Abstract
The present invention relates to a kind of signal level conversion equipments, it is characterized by: using voltage value be the voltage source of target high level voltage as power supply, it is inputted by power input (1), switch the on-off of (4) control power supply, diode D1 can prevent power positive cathode to be reversely connected, LM393 comparator is thereby protected not to be burned, LED indicating circuit whether normal power supply, bleeder circuit is formed by fixed value resistance R1 and slide rheostat R2, adjust the 2/3 of the bias voltage value input signal high level voltage value that slide rheostat R2 obtains 2 pins of LM393 comparator, signal input part (3) can at most access two paths of signals, turn on the switch (4), circuit is started to work, the signal that signal output end (3) obtains is then the signal after over level turns.The present invention is small in size, and operation is easy, and the conversion of plurality of level may be implemented, especially suitable for being related in the integrated circuit of plurality of level.
Description
Technical field
The invention belongs to power electronics field more particularly to a kind of signal level conversion equipments.
Background technique
Currently, the supply voltage of single-chip microcontroller and DSP are mostly 3.3V, the digital signal " 0 " and " 1 " that they are exported are corresponding to be simulated
" 0V " and " 3.3V " in signal, and " 0 " and " 1 " in digital signal needed for controlling some electronic components may be corresponding mould
" 0V " and " 12V " of quasi- signal then needs to carry out level conversion in order to normally transmit signal.Therefore a kind of signal is designed
Level converter has very high practicability.
Summary of the invention
It is an object of the invention to solve the problems, such as normally transmit signal between varying level.To reach above-mentioned mesh
, the technical solution adopted by the present invention is that: a kind of signal level conversion equipment, including LM393 comparator, fixed value resistance R1, cunning
Dynamic rheostat R2, diode D1, power input, signal input part, signal output end, switch and LED, it is characterised in that: with
Voltage value is the voltage source of target high level voltage as power supply, is inputted by power input, and switch control power supply leads to
Disconnected, diode D1 can prevent power positive cathode to be reversely connected, and thereby protect LM393 comparator and be not burned, and just whether LED indicating circuit
Often power supply forms bleeder circuit by fixed value resistance R1 and slide rheostat R2, and adjusting slide rheostat R2 makes LM393 comparator
The bias voltage value that 2 pins obtain is the 2/3 of input signal high level voltage value, and signal input part 3 can at most access two-way
Signal, switch are opened, and circuit is started to work, and the signal that signal output end obtains is then the signal after over level turns.The present invention
Connection relationship it is as follows: 1 pin of LM393 comparator connects 1 pin of signal output end, and 2 pins of LM393 comparator connect definite value
One end of resistance R1,4 pins of another termination LM393 comparator and 2 pins of power input of fixed value resistance R1 and LED's
Cathode is simultaneously grounded simultaneously, and 3 pins of LM393 comparator connect 1 pin of signal input part, and 5 pins of LM393 comparator connect signal
2 pins of input terminal, 6 pins of LM393 comparator connect one end of fixed value resistance R1, and it is defeated that 7 pins of LM393 comparator connect signal
2 pins of outlet, 8 pins of LM393 comparator connect capacitor C1 one end and capacitor C2 anode and diode D1 cathode and
One end of slide rheostat R2, one end of another termination fixed value resistance R1 of slide rheostat R2, the anode of diode D1 connect out
One end of 3 pins and resistance R3 that close, the anode of another termination LED of resistance R3,2 pins of switch connect the 1 of power input
Pin, the other end of capacitor C1 and the cathode ground connection of capacitor C2.
The present invention is a kind of signal level conversion equipment, small in size, and operation is easy, and the conversion of plurality of level may be implemented,
Especially suitable for being related in the integrated circuit of plurality of level.
The present invention is a kind of signal level conversion equipment, small in size, and operation is easy, and the conversion of plurality of level may be implemented,
Especially suitable for being related in the integrated circuit of plurality of level.
Detailed description of the invention
Fig. 1 is circuit diagram of the invention；
Fig. 2 is signal conversion timing sequence figure of the invention.
In figure, 1, power input；2, signal input part；3, signal output end；4, it switchs；LM393 is comparator；LED
For light emitting diode.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings of the specification.
It is an object of the invention to solve the problems, such as normally transmit signal between varying level.To reach above-mentioned mesh
The technical solution adopted by the present invention is that: a kind of signal level conversion equipment, including LM393 comparator, fixed value resistance R1, sliding
Rheostat R2, diode D1, power input 1, signal input part 2, signal output end 3, switch 4 and LED, it is characterised in that:
It is the voltage source of target high level voltage as power supply using voltage value, is inputted by power input 1, switch 4 controls power supply
On-off, diode D1 can prevent power positive cathode to be reversely connected, thereby protect LM393 comparator and be not burned, LED indicating circuit is
No normal power supply forms bleeder circuit by fixed value resistance R1 and slide rheostat R2, and adjusting slide rheostat R2 compares LM393
The bias voltage value that 2 pins of device obtain is the 2/3 of input signal high level voltage value, and signal input part 3 can at most access
Two paths of signals, switch 4 are opened, and circuit is started to work, and the signal that signal output end 3 obtains is then the signal after over level turns.
Its connection relationship is as follows: 1 pin of LM393 comparator connects 1 pin of signal output end 3, and 2 pins of LM393 comparator connect fixed
Be worth one end of resistance R1,2 pins of 4 pins of another termination LM393 comparator of fixed value resistance R1 and power input 1 and
The cathode of LED is simultaneously grounded simultaneously, and 3 pins of LM393 comparator connect 1 pin of signal input part 2,5 pins of LM393 comparator
2 pins of signal input part 2 are connect, 6 pins of LM393 comparator connect one end of fixed value resistance R1,7 pins of LM393 comparator
2 pins of signal output end 3 are connect, 8 pins of LM393 comparator connect one end of capacitor C1 and the anode and diode D1 of capacitor C2
Cathode and slide rheostat R2 one end, one end of another termination fixed value resistance R1 of slide rheostat R2, diode D1's
Anode connects 3 pins of switch 4 and one end of resistance R3, the anode of another termination LED of resistance R3, and 2 pins of switch 4 connect power supply
1 pin of input terminal 1, the other end of capacitor C1 and the cathode ground connection of capacitor C2.
Working principle: the conversion of two-way same level signal may be implemented in the circuit, and working principle is identical with process, existing
Just the level conversion of signal is described all the way.For example, if you need to which the signal (input signal) that high level is 3.3V is converted into height
Level is the signal (output signal) of 12V, then 1 pin of power input connects the anode of 12V voltage, and the 2 of power input are drawn
Foot connects the ground of 12V.Input signal connects 1 pin of signal input part, and adjusting slide rheostat makes the inclined of 2 pin of LM393 comparator
Setting voltage is 2.2V.By lower switch, LED is shinny, indicates that system power supply is normal, when input signal is low level 0V, LM393
The bias voltage of 3 pin of comparator is less than the bias voltage of 2 pin of LM393 comparator, passes through LM393 comparator internal comparator
Effect, 1 pin of LM393 comparator exports 0V, therefore that 1 pin of signal output end obtains is low level 0V；Work as input
When signal is high level 3.3V, the bias voltage of 3 pin of LM393 comparator is greater than the bias voltage of 2 pin of LM393 comparator,
By the effect of LM393 comparator internal comparator, 1 pin of LM393 comparator exports 12V, therefore the 1 of signal output end is drawn
That foot obtains is high level 12V, so far realizes the conversion of varying level signal.
The present invention is a kind of signal level conversion equipment, small in size, and operation is easy, and the conversion of plurality of level may be implemented,
Especially suitable for being related in the integrated circuit of plurality of level.
Claims (2)
1. a kind of signal level conversion equipment, including LM393 comparator, fixed value resistance R1, slide rheostat R2, diode D1,
Power input (1), signal input part (2), signal output end (3), switch (4) and LED, it is characterised in that: be with voltage value
The voltage source of target high level voltage is inputted as power supply by power input (1), the on-off of switch (4) control power supply,
Diode D1 can prevent power positive cathode to be reversely connected, and thereby protect LM393 comparator and be not burned, whether LED indicating circuit is normal
Power supply forms bleeder circuit by fixed value resistance R1 and slide rheostat R2, and adjusting slide rheostat R2 makes the 2 of LM393 comparator
The bias voltage value that pin obtains is the 2/3 of input signal high level voltage value, and signal input part (3) can at most access two-way
Signal, switch (4) are opened, and circuit is started to work, and the signal that signal output end (3) obtains is then the signal after over level turns.
2. signal level conversion equipment described in accordance with the claim 1, it is characterised in that: the connection relationship of the device is as follows:
1 pin of LM393 comparator connects 1 pin of signal output end (3), and 2 pins of LM393 comparator connect the one of fixed value resistance R1
End, 4 pins of another termination LM393 comparator and 2 pins of power input 1 of fixed value resistance R1 and the cathode of LED are simultaneously same
When be grounded, 3 pins of LM393 comparator connect 1 pin of signal input part (2), and 5 pins of LM393 comparator connect signal input
2 pins of (2) are held, 6 pins of LM393 comparator connect one end of fixed value resistance R1, and it is defeated that 7 pins of LM393 comparator connect signal
2 pins of outlet (3), 8 pins of LM393 comparator connect the cathode of one end of capacitor C1 and the anode of capacitor C2 and diode D1
With one end of slide rheostat R2, one end of another termination fixed value resistance R1 of slide rheostat R2, the anode of diode D1 is connect
3 pins of (4) and one end of resistance R3 are switched, the anode of another termination LED of resistance R3, it is defeated that 2 pins of switch (4) connect power supply
Enter 1 pin at end (1), the other end of capacitor C1 and the cathode ground connection of capacitor C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048734.XA CN109560810A (en) | 2019-01-18 | 2019-01-18 | A kind of signal level conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048734.XA CN109560810A (en) | 2019-01-18 | 2019-01-18 | A kind of signal level conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109560810A true CN109560810A (en) | 2019-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910048734.XA Pending CN109560810A (en) | 2019-01-18 | 2019-01-18 | A kind of signal level conversion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109560810A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769829A (en) * | 2020-07-22 | 2020-10-13 | 上海客益电子有限公司 | Signal conversion circuit supporting positive and negative connection |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103442457A (en) * | 2013-08-28 | 2013-12-11 | 江苏大学 | Picking robot sensor wireless transmission device and method based on Zigbee technology |
-
2019
- 2019-01-18 CN CN201910048734.XA patent/CN109560810A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103442457A (en) * | 2013-08-28 | 2013-12-11 | 江苏大学 | Picking robot sensor wireless transmission device and method based on Zigbee technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769829A (en) * | 2020-07-22 | 2020-10-13 | 上海客益电子有限公司 | Signal conversion circuit supporting positive and negative connection |
| CN111769829B (en) * | 2020-07-22 | 2023-12-08 | 上海先积集成电路有限公司 | Signal conversion circuit supporting forward and reverse connection |
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