CN210380655U - Conversion circuit - Google Patents
Conversion circuit Download PDFInfo
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- CN210380655U CN210380655U CN201921638985.5U CN201921638985U CN210380655U CN 210380655 U CN210380655 U CN 210380655U CN 201921638985 U CN201921638985 U CN 201921638985U CN 210380655 U CN210380655 U CN 210380655U
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Abstract
A conversion circuit belongs to the technical field of signal processing, and particularly relates to a conversion circuit. The utility model provides a conversion circuit that excellent in use effect. The utility model discloses a KA7500 chip U1, its characterized in that U1's 1 foot links to each other with resistance R1 one end, diode D3 negative pole respectively, and the resistance R1 other end links to each other with resistance R4 one end, electric capacity C3 one end respectively, and the electric capacity C3 other end and resistance R4 other end ground connection; the pin 8 of the U1 is respectively connected with the pin 11 of the U1, the pin 12 of the U1, the cathode of the voltage stabilizing diode D2, one end of a capacitor C6 and the collector of a PNP triode Q1, the base of the PNP triode Q1 is respectively connected with the emitter of the PNP triode Q1, one end of the capacitor C1, the cathode of the voltage stabilizing diode D1, the anode of the capacitor C2 and the 15 end through a resistor R3 and a resistor R2 in sequence, and the anode of the voltage stabilizing diode D1 and the cathode of the capacitor C2 are grounded.
Description
Technical Field
The utility model belongs to the technical field of signal processing, especially, relate to a conversion circuit.
Background
The conversion circuit has been widely used, but the use effect of the conversion circuit still needs to be further improved.
Disclosure of Invention
The utility model discloses just to above-mentioned problem, provide a conversion circuit that excellent in use effect.
In order to achieve the purpose, the utility model adopts the following technical scheme that the utility model comprises a KA7500 chip U1, and is characterized in that a pin 1 of U1 is respectively connected with one end of a resistor R1 and a cathode of a diode D3, the other end of the resistor R1 is respectively connected with one end of a resistor R4 and one end of a capacitor C3, and the other end of the capacitor C3 and the other end of the resistor R4 are grounded;
the pin 8 of U1 is respectively connected with pin 11 of U1, pin 12 of U1, the cathode of a voltage stabilizing diode D2, one end of a capacitor C6 and the collector of a PNP triode Q1, the base of the PNP triode Q1 is respectively connected with the emitter of the PNP triode Q1, one end of the capacitor C1, the cathode of a voltage stabilizing diode D1, the anode of the capacitor C2 and the end 15 in sequence through a resistor R3 and a resistor R2, the anode of the voltage stabilizing diode D1 and the cathode of the capacitor C2 are grounded, the other end of the capacitor C1 is grounded, and the other end of the capacitor C6;
the anode of the diode D3 is respectively connected with the anode of the capacitor C4, one end of the resistor R7, the anode of the voltage stabilizing diode D2 and the cathode of the diode D4, the other end of the resistor R7 and the anode of the diode D4 are grounded, and the cathode of the capacitor C4 is connected with the pin 3 of the U1;
the pin 5 of the U1 is respectively connected with one end of a resistor R6 and the ground wire through a capacitor C5, and the other end of the resistor R6 is connected with the pin 6 of the U1;
the 16 pins of U1 are respectively connected with the anode of a capacitor C7 and one end of a resistor R9, the cathode of the capacitor C7 and the other end of the resistor R9 are grounded, and the 4 pins and the 7 pins of U1 are grounded;
the pin 15 of U1 is connected with one end of a resistor R10 and one end of a resistor R8 respectively, the other end of the resistor R10 is grounded, the other end of the resistor R8 is connected with the pin 2 of U1 and one end of a resistor R5 respectively, the other end of the resistor R5 is connected with the pins 13 and 14 of U1 respectively, the pin 9 of U1 is connected with the end G2, and the pin 10 of U1 is connected with the end G1.
As a preferred scheme, electric capacity C2 adopts 2200 mu F electric capacity, electric capacity C1 adopts 0.01 mu F electric capacity, resistance R2 adopts 24K resistance, resistance R3 adopts 2K resistance, electric capacity C6 adopts 10 mu F electric capacity, electric capacity C3 adopts 1 mu F electric capacity, resistance R4 and R1 adopt 10K resistance, electric capacity C4 adopts 22 mu F/16V electric capacity, electric capacity C5 adopts 4700PF electric capacity, resistance R6 adopts 2.7K resistance, resistance R7 adopts 1K resistance, electric capacity C7 adopts 47 mu F/16V electric capacity, resistance R9 adopts 4.7K resistance, resistance R10 adopts 1K resistance, resistance R5 and R8 adopt 4K resistance.
As another preferred scheme, the PNP triode Q1 of the present invention adopts the 8550 triode, and the zener diode D1 and the zener diode D2 adopt the 2DZ15 zener diode.
Secondly, the utility model discloses still include alarm circuit, alarm circuit includes resistance R22, R22 one end respectively with U1's 2 feet, electric capacity C35 one end links to each other, electric capacity C35 other end ground connection, R22 another termination ps2561-1 chip U8's 1 foot links to each other, U8's 2 feet ground connection, U8's 4 feet pass through resistance R23 respectively with +12 end, electric capacity C37 one end, HYT1212 type speaker B1 positive pole links to each other, B1 negative pole respectively with 2N4401 type triode Q4 collecting electrode, 2N4401 type triode Q5 collecting electrode links to each other, Q4 base passes through resistance R24 respectively with U8's 3 feet, electric capacity C36 one end links to each other, electric capacity C36 other end respectively with the ground wire, Q5 projecting pole links to each other, Q5 base connects Q4 projecting pole, electric capacity C37 other end ground connection.
In addition, the R22 adopts a 1K resistor, the C35 adopts a 0.1 muF capacitor, the resistor R23 adopts a 1K resistor, the C36 adopts a 0.1 muF capacitor, the R24 adopts a 1K resistor, and the C37 adopts a 100pF capacitor.
The utility model has the advantages of.
The utility model discloses can carry out the high frequency with 15V direct current conversion and step up into high frequency signal through KA7500 chip, KA7500 produces the drive pulse signal, and oscillation frequency produces through 5 feet and 6 foot resistance capacitance.
The PNP triode Q1 plays a role in power supply protection and voltage stabilization, so that the U1 of the KA7500 chip works in voltage stabilization. The transistor Q1 operates in the cut-off region, and the voltage is stabilized at the base through R3 and R2. The resistor provides bias current for the triode, so that the triode is conducted, and the voltage of the base is stable.
The utility model discloses a electric capacity C1, C3, C7 carry out ground connection and keep apart, and circuit protection function is good.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.
Fig. 1 is a schematic circuit diagram of the present invention.
Fig. 2 is the alarm circuit of the present invention.
Detailed Description
As shown in the figure, the utility model comprises a KA7500 chip U1, pin 1 of U1 is connected with one end of a resistor R1 and the cathode of a diode D3, the other end of the resistor R1 is connected with one end of a resistor R4 and one end of a capacitor C3, and the other ends of the capacitor C3 and the resistor R4 are grounded;
the pin 8 of U1 is respectively connected with pin 11 of U1, pin 12 of U1, the cathode of a voltage stabilizing diode D2, one end of a capacitor C6 and the collector of a PNP triode Q1, the base of the PNP triode Q1 is respectively connected with the emitter of the PNP triode Q1, one end of the capacitor C1, the cathode of a voltage stabilizing diode D1, the anode of the capacitor C2 and the end 15 in sequence through a resistor R3 and a resistor R2, the anode of the voltage stabilizing diode D1 and the cathode of the capacitor C2 are grounded, the other end of the capacitor C1 is grounded, and the other end of the capacitor C6;
the anode of the diode D3 is respectively connected with the anode of the capacitor C4, one end of the resistor R7, the anode of the voltage stabilizing diode D2 and the cathode of the diode D4, the other end of the resistor R7 and the anode of the diode D4 are grounded, and the cathode of the capacitor C4 is connected with the pin 3 of the U1;
the pin 5 of the U1 is respectively connected with one end of a resistor R6 and the ground wire through a capacitor C5, and the other end of the resistor R6 is connected with the pin 6 of the U1;
the 16 pins of U1 are respectively connected with the anode of a capacitor C7 and one end of a resistor R9, the cathode of the capacitor C7 and the other end of the resistor R9 are grounded, and the 4 pins and the 7 pins of U1 are grounded;
the pin 15 of U1 is connected with one end of a resistor R10 and one end of a resistor R8 respectively, the other end of the resistor R10 is grounded, the other end of the resistor R8 is connected with the pin 2 of U1 and one end of a resistor R5 respectively, the other end of the resistor R5 is connected with the pins 13 and 14 of U1 respectively, the pin 9 of U1 is connected with the end G2, and the pin 10 of U1 is connected with the end G1.
The capacitor C2 adopts a 2200 muF capacitor, the capacitor C1 adopts a 0.01 muF capacitor, the resistor R2 adopts a 24K resistor, the resistor R3 adopts a 2K resistor, the capacitor C6 adopts a 10 muF capacitor, the capacitor C3 adopts a 1 muF capacitor, the resistors R4 and R1 adopt 10K resistors, the capacitor C4 adopts a 22 muF/16V capacitor, the capacitor C5 adopts a 4700PF capacitor, the resistor R6 adopts a 2.7K resistor, the resistor R7 adopts a 1K resistor, the capacitor C7 adopts a 47 muF/16V capacitor, the resistor R9 adopts a 4.7K resistor, the resistor R10 adopts a 1K resistor, and the resistors R5 and R8 adopt 4K resistors.
The PNP triode Q1 adopts an 8550 triode, and the zener diode D1 and the zener diode D2 adopt a 2DZ15 zener diode.
The utility model discloses can convert 15V direct current into 50 KHz's high frequency signal.
The utility model discloses can be applied to switching power supply, UPS, vehicle mounted power, on-vehicle voltage modulator.
The utility model discloses still include alarm circuit, alarm circuit includes resistance R22, R22 one end respectively with U1's 2 feet, electric capacity C35 one end links to each other, electric capacity C35 other end ground connection, R22 another termination ps2561-1 chip U8's 1 foot links to each other, U8's 2 foot ground connection, U8's 4 feet pass through resistance R23 respectively with +12 end, electric capacity C37 one end, HYT1212 type speaker B1 positive pole links to each other, B1 negative pole respectively with 2N4401 type triode Q4 collecting electrode, 2N4401 type triode Q5 collecting electrode links to each other, Q4 base passes through resistance R24 respectively with U8's 3 feet, electric capacity C36 one end links to each other, the electric capacity C36 other end respectively with the ground wire, Q5 projecting pole links to each other, Q5 base Q4 projecting pole, electric capacity C37 other end ground connection.
R22 adopts 1K resistance, and C35 adopts 0.1 mu F electric capacity, and resistance R23 adopts 1K resistance, and C36 adopts 0.1 mu F electric capacity, and R24 adopts 1K resistance, and C37 adopts 100pF electric capacity.
When the U1 enters the dead zone, the pin 2 of the U1 outputs a high level to drive an alarm circuit to alarm. The alarm circuit is used to detect whether U1 enters a dead zone.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (5)
1. A conversion circuit comprises a KA7500 chip U1 and is characterized in that a pin 1 of a U1 is respectively connected with one end of a resistor R1 and the cathode of a diode D3, the other end of the resistor R1 is respectively connected with one end of a resistor R4 and one end of a capacitor C3, and the other end of the capacitor C3 and the other end of the resistor R4 are grounded;
the pin 8 of U1 is respectively connected with pin 11 of U1, pin 12 of U1, the cathode of a voltage stabilizing diode D2, one end of a capacitor C6 and the collector of a PNP triode Q1, the base of the PNP triode Q1 is respectively connected with the emitter of the PNP triode Q1, one end of the capacitor C1, the cathode of a voltage stabilizing diode D1, the anode of the capacitor C2 and the end 15 in sequence through a resistor R3 and a resistor R2, the anode of the voltage stabilizing diode D1 and the cathode of the capacitor C2 are grounded, the other end of the capacitor C1 is grounded, and the other end of the capacitor C6;
the anode of the diode D3 is respectively connected with the anode of the capacitor C4, one end of the resistor R7, the anode of the voltage stabilizing diode D2 and the cathode of the diode D4, the other end of the resistor R7 and the anode of the diode D4 are grounded, and the cathode of the capacitor C4 is connected with the pin 3 of the U1;
the pin 5 of the U1 is respectively connected with one end of a resistor R6 and the ground wire through a capacitor C5, and the other end of the resistor R6 is connected with the pin 6 of the U1;
the 16 pins of U1 are respectively connected with the anode of a capacitor C7 and one end of a resistor R9, the cathode of the capacitor C7 and the other end of the resistor R9 are grounded, and the 4 pins and the 7 pins of U1 are grounded;
the pin 15 of U1 is connected with one end of a resistor R10 and one end of a resistor R8 respectively, the other end of the resistor R10 is grounded, the other end of the resistor R8 is connected with the pin 2 of U1 and one end of a resistor R5 respectively, the other end of the resistor R5 is connected with the pins 13 and 14 of U1 respectively, the pin 9 of U1 is connected with the end G2, and the pin 10 of U1 is connected with the end G1.
2. The conversion circuit of claim 1, wherein the capacitor C2 is 2200 μ F, the capacitor C1 is 0.01 μ F, the resistor R2 is 24K, the resistor R3 is 2K, the capacitor C6 is 10 μ F, the capacitor C3 is 1 μ F, the resistors R4 and R1 are 10K, the capacitor C4 is 22 μ F/16V, the capacitor C5 is 4700PF, the resistor R6 is 2.7K, the resistor R7 is 1K, the capacitor C7 is 47 μ F/16V, the resistor R9 is 4.7K, the resistor R10 is 1K, and the resistors R5 and R8 are 4K.
3. The conversion circuit of claim 1, wherein the PNP transistor Q1 is implemented as an 8550 transistor, and the zener diode D1 and the zener diode D2 are implemented as 2DZ15 zener diodes.
4. The conversion circuit according to claim 1, further comprising an alarm circuit, wherein the alarm circuit comprises a resistor R22, one end of the R22 is connected to the 2-pin of the U1 and one end of the capacitor C35 respectively, the other end of the capacitor C35 is connected to ground, the other end of the R22 is connected to the 1-pin of the ps2561-1 chip U8, the 2-pin of the U8 is connected to ground, the 4-pin of the U8 is connected to the +12 terminal, one end of the capacitor C37 and the positive electrode of the HYT1212 type speaker B1 respectively through the resistor R23, the negative electrode of the B1 is connected to the collector of the 2N4401 type triode Q4 and the collector of the 2N4401 type triode Q5 respectively, the base of the Q4 is connected to the 3-pin of the U8 and one end of the capacitor C36 respectively, the other end of the capacitor C9 is connected to ground, the emitter of the Q5, the base of the Q82.
5. The conversion circuit of claim 4, wherein said R22 is 1K resistor, C35 is 0.1 μ F capacitor, R23 is 1K resistor, C36 is 0.1 μ F capacitor, R24 is 1K resistor, and C37 is 100pF capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921638985.5U CN210380655U (en) | 2019-09-29 | 2019-09-29 | Conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921638985.5U CN210380655U (en) | 2019-09-29 | 2019-09-29 | Conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210380655U true CN210380655U (en) | 2020-04-21 |
Family
ID=70255651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921638985.5U Expired - Fee Related CN210380655U (en) | 2019-09-29 | 2019-09-29 | Conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210380655U (en) |
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2019
- 2019-09-29 CN CN201921638985.5U patent/CN210380655U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 Termination date: 20210929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |