CN210833589U - Control circuit of transmitting disc - Google Patents
Control circuit of transmitting disc Download PDFInfo
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- CN210833589U CN210833589U CN201922305535.0U CN201922305535U CN210833589U CN 210833589 U CN210833589 U CN 210833589U CN 201922305535 U CN201922305535 U CN 201922305535U CN 210833589 U CN210833589 U CN 210833589U
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Abstract
The utility model discloses a control circuit of a transmitting disc, which comprises a power input end, at least one path of Hall detection circuit and signal output ends corresponding to the quantity of the Hall detection circuits; the Hall detection circuit comprises a Hall element; the power supply input end introduces a direct current power supply to supply power for the Hall detection circuit, and the signal output end is connected with the output end of the Hall detection circuit and outputs a detection result; the circuit also comprises a triode output circuit; the triode output circuit comprises a triode; the base electrode of the triode is connected with the output end of the Hall detection circuit, the collector electrode of the triode is connected with the signal output end, and the emitting electrode of the triode is grounded. The utility model discloses a triode output circuit switches on the signal of output hall detection circuit, avoids hall detection circuit's pin directly to expose outside, prevents to receive static damage, and the compressive property of triode is good, very easily through the model of changing the triode, improves the pressure resistance of output, has consequently improved the quality of product, has reduced the market defective rate.
Description
Technical Field
The utility model relates to a control circuit especially relates to a control circuit of letter transmission dish.
Background
General letter transmitting disc uses and directly exports through hall after the hall detects, because of hall element is the sensor, its mains voltage can not bear too high, and is sensitive to static, receives static damage very easily in the production use, and the market feedback of many years takes place occasionally because of power overvoltage or the phenomenon of static breakdown hall.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a control circuit of letter transmission dish.
Realize the utility model discloses the technical scheme of purpose is: a control circuit of a transmitting panel comprises a power input end, at least one path of Hall detection circuit and signal output ends corresponding to the number of the Hall detection circuits; the Hall detection circuit comprises a Hall element; the power supply input end introduces a direct current power supply to supply power for the Hall detection circuit, and the signal output end is connected with the output end of the Hall detection circuit and outputs a detection result; the circuit also comprises a triode output circuit; the triode output circuit comprises a triode; the base electrode of the triode is connected with the output end of the Hall detection circuit, the collector electrode of the triode is connected with the signal output end, and the emitting electrode of the triode is grounded.
The triode output circuit also comprises a current-limiting resistor; and two ends of the current-limiting resistor are connected between the signal output end and the collector of the triode.
The control circuit of the transmitting disc also comprises a reverse connection protection circuit; the reverse connection protection circuit comprises a first diode arranged between the current-limiting resistor and the signal output end; the positive electrode of the first diode is connected with the signal output end, and the negative electrode of the first diode is connected with the current-limiting resistor.
The reverse connection protection circuit further comprises a second diode, wherein the cathode of the second diode is connected with the cathode of the power input end, and the anode of the second diode is grounded.
The control circuit of the transmitting disk also comprises a filtering and voltage stabilizing circuit which is arranged between the input end of the power supply and the input end of the Hall detection circuit.
The filtering voltage stabilizing circuit comprises a three-terminal voltage regulator and two capacitors; the input end of the three-terminal voltage stabilizer is connected with the power supply input end, and the output end of the three-terminal voltage stabilizer is connected with the input end of the Hall detection circuit; one end of one capacitor is connected with the input end of the three-terminal voltage regulator, and the other end of the capacitor is grounded; and one end of the other capacitor is connected with the output end of the three-terminal voltage stabilizer, and the other end of the other capacitor is grounded.
The Hall detection circuit further comprises a first filter resistor arranged between the output end of the three-terminal voltage stabilizer and the input end of the Hall element, a second filter resistor arranged between the input end and the output end of the Hall element, and a third filter resistor arranged between the output end of the Hall element and the base electrode of the triode.
The Hall element is AT1132L in model number; the type of the diode is 1N 4148; the model of the triode is 2N 5551.
The model of the three-terminal regulator is 78L 12.
By adopting the technical scheme, the utility model discloses following beneficial effect has:
(1) the utility model discloses a triode output circuit switches on the signal of output hall detection circuit, avoids hall detection circuit's pin directly to expose outside, prevents to receive static damage, and the compressive property of triode is good, very easily through the model of changing the triode, improves the pressure resistance of output, has consequently improved the quality of product, has reduced the market defective rate.
(2) The utility model discloses be equipped with current-limiting resistor, prevent that the electric current through hall detection circuit is too big, lead to damaging, played protection circuit's effect.
(3) The utility model discloses a reverse connection protection circuit prevents that the electric current from flowing backward through setting up the diode, has further played protection circuit's effect for when the customer connects wrong output, the circuit can not receive the damage.
(4) The utility model discloses a reverse-connection protection circuit is connected with the diode at the negative pole of power input end, can prevent to connect the electric current that the reverse-connection power leads to and flow backward, has further played protection circuit's effect, makes the customer connect two arbitrary ports and can not make the circuit receive the heavy current damage.
(5) The utility model discloses be equipped with filtering voltage stabilizing circuit, carry out the step-down steady voltage to circuit voltage, make the work of the power voltage after the step-down steady voltage especially suitable hall subassembly, avoided higher direct current voltage direct input to supply hall subassembly work and lead to hall subassembly to damage.
(6) The utility model discloses a filtering voltage stabilizing circuit carries out the step-down steady voltage through three terminal regulator and two filter capacitance, simple structure, step-down steady voltage and filtering effect are good.
(7) The utility model discloses a be equipped with filter resistance in the hall detection circuitry, clutter in the hall detection circuitry of can filtering, further protection circuit.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a circuit diagram of the present invention.
The reference numbers in the drawings are as follows: the circuit comprises a power input end 1, a Hall detection circuit 2, a signal output end 3, a triode output circuit 4, a reverse connection protection circuit 5 and a filtering and voltage stabilizing circuit 6.
Detailed Description
(example 1)
Fig. 1 is a schematic block diagram of this embodiment, and includes a power input terminal 1, at least one hall detection circuit 2, and signal output terminals 3 corresponding to the number of the hall detection circuits 2. The hall detection circuit 2 includes a hall element. The power input end 1 introduces a direct current power supply to supply power for the Hall detection circuit 2, and the signal output end 3 is connected with the output end of the Hall detection circuit 2 to output the detection result. And further comprises a triode output circuit 4. The transistor output circuit 4 includes a transistor. The base electrode of the triode is connected with the output end of the Hall detection circuit 2, the collector electrode of the triode is connected with the signal output end 3, and the emitting electrode of the triode is grounded.
The triode output circuit 4 further comprises a current limiting resistor. The two ends of the current limiting resistor are connected between the signal output end 3 and the collector of the triode.
A reverse connection protection circuit 5 is also included. The reverse connection protection circuit 5 includes a first diode disposed between the current limiting resistor and the signal output terminal 3. The anode of the first diode is connected with the signal output end 3, and the cathode of the first diode is connected with the current-limiting resistor.
The reverse connection protection circuit 5 further comprises a second diode D5, a cathode of the second diode D5 is connected to a cathode of the power input terminal 1, and an anode thereof is grounded.
The circuit also comprises a filtering and voltage stabilizing circuit 6, wherein the filtering and voltage stabilizing circuit 6 is arranged between the power input end 1 and the input end of the Hall detection circuit 2.
The filtering and voltage stabilizing circuit 6 comprises a three-terminal regulator and two capacitors. The input end of the three-terminal voltage stabilizer is connected with the power input end 1, and the output end of the three-terminal voltage stabilizer is connected with the input end of the Hall detection circuit 2. One end of one capacitor is connected with the input end of the three-terminal voltage stabilizer, and the other end of the capacitor is grounded. One end of the other capacitor is connected with the output end of the three-terminal voltage stabilizer, and the other end of the other capacitor is grounded.
The Hall detection circuit 2 further comprises a first filter resistor arranged between the output end of the three-terminal voltage regulator and the input end of the Hall element, a second filter resistor arranged between the input end and the output end of the Hall element, and a third filter resistor arranged between the output end of the Hall element and the base electrode of the triode.
Fig. 2 shows a specific embodiment of the present invention, wherein the power input terminal 1 includes an input interface J1 and an output interface J6. Current flows in from the input interface J1 and out the output interface J6.
The diode D5 is connected to the output interface J6. The cathode of the diode D5 is electrically connected to the output interface J6. The anode of the diode D5 is grounded with the 2-pin of the three-terminal regulator U1.
The filtering and voltage stabilizing circuit 6 comprises a three-terminal voltage regulator U1, a capacitor C1 and a capacitor C2. And a pin 3 of the three-terminal voltage regulator U1 is electrically connected with the J1, and a pin 2 is grounded. One end of the capacitor C1 is connected with pin 3 of the three-terminal regulator U1, and the other end is grounded. One end of the capacitor C2 is connected with pin 1 of the three-terminal regulator U1, and the other end is grounded.
The hall detection circuit 2 of this embodiment is provided with four paths, which are a first hall detection circuit, a second hall detection circuit, a third hall detection circuit, and a fourth hall detection circuit, respectively. The detection output circuit can be two paths, three paths or other paths. Each path of Hall detection circuit is respectively connected with the corresponding signal output end 3.
The first Hall detection circuit comprises a Hall element U2, a diode D1, a triode Q1, a filter resistor R5, a filter resistor R9, a filter resistor R13 and a current-limiting resistor R1. The Hall element U2, the triode Q1 and the diode D1 are electrically connected in sequence. The concrete connection mode is as follows: and a pin 1 of the three-terminal voltage regulator U1 is electrically connected with one end of the filter resistor R5. The other end of the filter resistor R5 is electrically connected with pin 3 of the Hall element U2. The pin 2 of the hall element U2 is electrically connected to the output interface J6. And a pin 1 of the Hall element U2 is electrically connected with one end of the filter resistor R13. The other end of the filter resistor R13 is electrically connected with the base of the triode Q1. The emitter of transistor Q1 is connected to ground. The collector of the transistor Q1 is electrically connected to one end of a current limiting resistor R1. The other end of the current limiting resistor R1 is electrically connected to the cathode of the diode D1. The anode of the diode D1 is electrically connected to the first signal output terminal J2. And a filter resistor R9 is connected between pins 1 and 3 of the Hall element U2.
The second Hall detection circuit comprises a Hall element U3, a diode D2, a triode Q2, a filter resistor R6, a filter resistor R10, a filter resistor R14 and a current-limiting resistor R2. The Hall element U3, the triode Q2 and the diode D2 are electrically connected in sequence. The concrete connection mode is as follows: and a pin 1 of the three-terminal voltage regulator U1 is electrically connected with one end of the filter resistor R6. The other end of the filter resistor R6 is electrically connected with pin 3 of the Hall element U3. The pin 2 of the hall element U3 is electrically connected to the output interface J6. And a pin 1 of the Hall element U3 is electrically connected with one end of the filter resistor R14. The other end of the filter resistor R14 is electrically connected with the base of the triode Q2. The emitter of transistor Q2 is connected to ground. The collector of the transistor Q2 is electrically connected to one end of a current limiting resistor R2. The other end of the current limiting resistor R2 is electrically connected to the cathode of the diode D2. The anode of the diode D2 is electrically connected to the second signal output terminal J3. And a filter resistor R10 is connected between pins 1 and 3 of the Hall element U3.
The third Hall detection circuit comprises a Hall element U4, a diode D3, a triode Q3, a filter resistor R7, a filter resistor R11, a filter resistor R15 and a current-limiting resistor R3. The Hall element U4, the triode Q3 and the diode D3 are electrically connected in sequence. The concrete connection mode is as follows: and a pin 1 of the three-terminal voltage regulator U1 is electrically connected with one end of the filter resistor R7. The other end of the filter resistor R7 is electrically connected with pin 3 of the Hall element U4. The pin 2 of the hall element U4 is electrically connected to the output interface J6. And a pin 1 of the Hall element U4 is electrically connected with one end of the filter resistor R15. The other end of the filter resistor R15 is electrically connected with the base of the triode Q3. The emitter of transistor Q3 is connected to ground. The collector of the transistor Q3 is electrically connected to one end of a current limiting resistor R3. The other end of the current limiting resistor R3 is electrically connected to the cathode of the diode D3. The anode of the diode D3 is electrically connected to the third signal output terminal J4. And a filter resistor R11 is connected between pins 1 and 3 of the Hall element U4.
The fourth Hall detection circuit comprises a Hall element U5, a diode D4, a triode Q4, a filter resistor R8, a filter resistor R12, a filter resistor R16 and a current-limiting resistor R4. The Hall element U5, the triode Q4 and the diode D4 are electrically connected in sequence. The concrete connection mode is as follows: and a pin 1 of the three-terminal voltage regulator U1 is electrically connected with one end of the filter resistor R8. The other end of the filter resistor R8 is electrically connected with pin 3 of the Hall element U5. The pin 2 of the hall element U5 is electrically connected to the output interface J6. And a pin 1 of the Hall element U5 is electrically connected with one end of the filter resistor R16. The other end of the filter resistor R16 is electrically connected with the base of the triode Q4. The emitter of transistor Q4 is connected to ground. The collector of the transistor Q4 is electrically connected to one end of a current limiting resistor R4. The other end of the current limiting resistor R4 is electrically connected to the cathode of the diode D4. The anode of the diode D4 is electrically connected to the fourth signal output terminal J5. And a filter resistor R12 is connected between pins 1 and 3 of the Hall element U5.
The three-terminal regulator of the embodiment has the model number of 78L12, the Hall elements of AT1132L, the triodes of 2N5551 and the diodes of 1N 4148.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A control circuit of a transmitting panel comprises a power input end (1), at least one path of Hall detection circuit (2) and signal output ends (3) with the number corresponding to that of the Hall detection circuits (2); the Hall detection circuit (2) comprises a Hall element; a direct-current power supply is introduced into the power supply input end (1) to supply power to the Hall detection circuit (2), and the signal output end (3) is connected with the output end of the Hall detection circuit (2) to output a detection result; the method is characterized in that: the circuit also comprises a triode output circuit (4); the triode output circuit (4) comprises a triode; the base electrode of the triode is connected with the output end of the Hall detection circuit (2), the collector electrode of the triode is connected with the signal output end (3), and the emitting electrode of the triode is grounded.
2. A control circuit according to claim 1, wherein: the triode output circuit (4) also comprises a current-limiting resistor; and two ends of the current-limiting resistor are connected between the signal output end (3) and the collector of the triode.
3. A control circuit according to claim 2, wherein: the device also comprises a reverse connection protection circuit (5); the reverse connection protection circuit (5) comprises a first diode arranged between the current limiting resistor and the signal output end (3); the anode of the first diode is connected with the signal output end (3), and the cathode of the first diode is connected with the current-limiting resistor.
4. A control circuit according to claim 3, wherein: the reverse connection protection circuit (5) further comprises a second diode, the cathode of the second diode is connected with the cathode of the power input end (1), and the anode of the second diode is grounded.
5. The control circuit of claim 4, wherein: the power supply is characterized by further comprising a filtering and voltage stabilizing circuit (6), wherein the filtering and voltage stabilizing circuit (6) is arranged between the power supply input end (1) and the input end of the Hall detection circuit (2).
6. The control circuit of claim 5, wherein: the filtering voltage stabilizing circuit (6) comprises a three-terminal voltage stabilizer and two capacitors; the input end of the three-terminal voltage stabilizer is connected with the power input end (1), and the output end of the three-terminal voltage stabilizer is connected with the input end of the Hall detection circuit (2); one end of one capacitor is connected with the input end of the three-terminal voltage regulator, and the other end of the capacitor is grounded; and one end of the other capacitor is connected with the output end of the three-terminal voltage stabilizer, and the other end of the other capacitor is grounded.
7. The control circuit of claim 6, wherein: the Hall detection circuit (2) further comprises a first filter resistor arranged between the output end of the three-terminal voltage stabilizer and the input end of the Hall element, a second filter resistor arranged between the input end and the output end of the Hall element, and a third filter resistor arranged between the output end of the Hall element and the base electrode of the triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922305535.0U CN210833589U (en) | 2019-12-19 | 2019-12-19 | Control circuit of transmitting disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922305535.0U CN210833589U (en) | 2019-12-19 | 2019-12-19 | Control circuit of transmitting disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210833589U true CN210833589U (en) | 2020-06-23 |
Family
ID=71260766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922305535.0U Active CN210833589U (en) | 2019-12-19 | 2019-12-19 | Control circuit of transmitting disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210833589U (en) |
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2019
- 2019-12-19 CN CN201922305535.0U patent/CN210833589U/en active Active
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