CN210181491U - Control circuit of alternating current power supply - Google Patents
Control circuit of alternating current power supply Download PDFInfo
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- CN210181491U CN210181491U CN201921341850.2U CN201921341850U CN210181491U CN 210181491 U CN210181491 U CN 210181491U CN 201921341850 U CN201921341850 U CN 201921341850U CN 210181491 U CN210181491 U CN 210181491U
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Abstract
A control circuit of an alternating current power supply, alternating current in the alternating current power supply is adjusted by a rectifying power supply to form a direct current circuit and enters a voltage stabilizing circuit, a 5V working power supply is formed by the voltage stabilizing circuit to provide power for an IC, an adjusting circuit and an output circuit, the alternating current power supply provides the alternating current working power supply for the output circuit, alternating current in the alternating current power supply enters the IC and carries out zero point detection on the entering alternating current by the IC, the adjusting circuit transmits an adjusting signal to the control circuit through the IC and adjusts power of the output circuit through the control circuit, a display circuit receives a power signal in the adjusting circuit through the IC to display, compared with the traditional zero point detection circuit, the control circuit has simpler structure, can effectively sense temperature or power of a working element and display the temperature of the heating wire when the working element is the heating wire, when the working element is a motor, the rotating speed of the motor can be effectively controlled, so that the temperature can be controlled.
Description
Technical Field
The utility model belongs to the technical field of the circuit and specifically relates to a control circuit of alternating current power supply is related to.
Background
Alternating Current (AC) refers to a current whose magnitude and direction change periodically, and is called alternating current or AC for short, because the running average value of periodic current in a period is zero. Abbreviated as AC in english. The direction of different direct currents is the same. Typically the waveform is sinusoidal. Alternating current can efficiently transmit power. But in practice other waveforms, such as triangular, square, are also applied. The commercial power used in life is alternating current with sine waveform.
Alternating current is widely used in alternating current motor equipment, but present alternating current motor is for better work, generally all can set up a zero point detection circuit, but traditional zero point detection circuit structure is complicated, and the spare part that needs is also more to make manufacturing cost on the high side, be not conform to low-cost location.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.
A control circuit for an ac power source, comprising: the alternating current power supply, the rectifying circuit, the voltage stabilizing circuit, the IC, the regulating circuit, the control circuit, the display circuit and the output circuit, wherein alternating current in the alternating current power supply is adjusted through the rectifying power supply to form a direct current circuit and enters the voltage stabilizing circuit, a 5V working power supply is formed through the voltage stabilizing circuit to provide power for the IC, the regulating circuit and the output circuit, the alternating current power supply provides an alternating current working power supply for the output circuit, alternating current in the alternating current power supply enters the IC and carries out zero point detection on the entering alternating current through the IC, the regulating circuit transmits a regulating signal to the control circuit through the IC, the power of the output circuit is regulated through the control circuit, and the display circuit receives a power signal in the regulating circuit through the IC and.
As a further aspect of the present invention: the rectifier circuit includes: one end of the resistor R1 is connected with an alternating current power supply, the other end of the resistor R1 is connected with the capacitor C1, the other end of the capacitor C1 is connected with the switch S1, the other end of the switch is connected with the positive pole pin of the rectifier diode D2, the negative pole pin of the rectifier diode D2 is connected with the voltage stabilizing circuit, the positive pole pin of the rectifier diode D2 is further connected with the negative pole pin of the rectifier diode D1, the positive pole pin of the rectifier diode D1 is connected with the ground, the positive pole pin and the negative pole pin of the rectifier diode D1 are connected in parallel with the resistor R4, and the two end pins of the capacitor C1 are connected in parallel with the resistor R2 and the resistor R3 which are connected together in series.
As a further aspect of the present invention: the voltage stabilizing circuit comprises: a pin 3 of the voltage stabilizing chip IC1 is connected to a negative electrode pin of a rectifier diode D2 in the rectifier circuit, a pin 1 of the voltage stabilizing chip IC1 is connected to a 5V operating power supply, a pin 1 of the voltage stabilizing chip IC1 is further connected to a pin one end of a patch capacitor C4, a pin 2 of the patch capacitor C4 is connected to a pin 2 of the voltage stabilizing chip IC1, a pin 2 of the voltage stabilizing chip IC1 is grounded, a pin 2 of the voltage stabilizing chip IC1 is further connected to a pin 2 of the voltage stabilizing diode D3, a pin negative electrode of the voltage stabilizing diode D3 is connected to a pin 3 of the voltage stabilizing chip, a capacitor C3 and a pin C2 are connected in parallel between the pin 3 of the voltage stabilizing chip and the pin 2 of the voltage stabilizing chip, and the voltage stabilizing diode D3 is in a voltage range of 6-15V.
As a further aspect of the present invention: the IC includes: the control system comprises a control chip U1, wherein the 1 st pin of the control chip U1 is connected with a 5V working power supply, the 1 st pin of the control chip U1 is also connected with the 16 th pin of the control chip U1, a capacitor C5 is further connected in series between the 1 st pin U1 of the control chip U1 and the 16 th pin of the control chip U1, the 16 th pin of the control chip U1 is grounded, the control chip U1 is a digital IC with the model GA452AD14-SOP16, and the 6 th pin of the control chip U1 is also connected with an alternating current power supply.
As a further aspect of the present invention: the display circuit includes: a 1 st pin of a nixie tube SG1 is connected with a 10 th pin of a control chip U1, a 2 nd pin of the nixie tube SG1 is connected with an 11 th pin of a control chip U1, a 3 rd pin of the nixie tube SG1 is connected with a 12 th pin of a control chip U1, a4 th pin of the nixie tube SG1 is connected with a 9 th pin of the control chip U1, a4 th pin of the nixie tube SG1 is connected in series with a 9 th pin of the control chip U1 with a resistor R5, a 5 th pin of the nixie tube SG1 is connected with an 8 th pin of the control chip U1, a 5 th pin of the nixie tube SG1 is also connected in series with a resistor R6 on an 8 th pin of the control chip U1, a 6 th pin of the nixie tube SG1 is connected with a 7 th pin of the control chip U1, a 6 th pin of the nixie tube SG1 is connected in series with a 7 th pin of the control chip U1, and a nixie tube SG 72 is also connected with a 7 th pin of the control chip U1, and a nixie tube SG1, the 8 th pin of the nixie tube SG1 is connected with the 4 th pin of the control chip U1, the 8 th pin of the nixie tube SG1 and the 4 th pin of the control chip U1 are also connected in series with a resistor R9, the 9 th pin of the nixie tube SG1 is connected with the 6 th pin of the control chip U1, the 9 th pin of the nixie tube SG1 and the 6 th pin of the control chip U1 are also connected in series with a resistor R10, the 10 th pin of the nixie tube SG1 is connected with the 2 nd pin of the control chip U1, and the 10 th pin of the nixie tube SG1 and the 2 nd pin of the control chip U1 are also connected in series with a resistor R11.
As a further aspect of the present invention: the regulation circuit includes: the adjustable potentiometer R20 is characterized in that the adjustable potentiometer R20 is connected with a 5V working power supply, one end pin of the adjustable potentiometer R20 is connected with the 14 th pin of the control chip U1, the other end pin of the adjustable potentiometer R20 is connected with the 15 th pin of the control chip U1 while the other end pin of the adjustable potentiometer R20 is grounded, the other end pin of the adjustable potentiometer R20 is also connected with the resistor R12, the other end of the resistor R12 is connected with the 5V working power supply, a resistor C7 is connected in parallel between the 15 th pin of the control chip U1 and the 14 th pin of the control chip U1, a capacitor C6 is connected in series between the two end pins of the adjustable potentiometer R20, and a temperature-sensitive resistor t is connected in parallel between the 15 th pin of the control chip U1 and the 14 th pin of the control chip U1.
As a further aspect of the present invention: the control circuit includes: a transistor BG1, an emitter of the transistor BG1 is connected with a 5V working power supply, a base of the transistor BG1 is connected with a 13 th pin of a control chip U1, a resistor R14 is connected in series between a base of the transistor BG1 and the 13 th pin of the control chip U1, a resistor R13 is connected in parallel between the emitter of the transistor BG1 and a base of the transistor BG1, a resistor R15 is connected to a collector of the transistor BG1, the other end of the resistor R15 is connected with a base of a transistor BG2, a resistor R16 is connected in parallel between the emitter of the transistor BG2 and a base of a transistor BG2, an emitter of the transistor BG2 is grounded, a collector of the transistor BG2 is further connected with a control end of a thyristor Q2, a resistor R2 and a resistor R2 are connected in series between the collector of the transistor BG2 and a control end of the thyristor Q2, a resistor R2 is connected in parallel between the control end of the thyristor Q2 and an input end of the thyristor Q36, and the output end of the controllable silicon Q1 is connected with an output circuit.
As a further aspect of the present invention: the output circuit includes: one end of the working element is connected with the output end of the controllable silicon Q1, the other end of the working element is also connected with an alternating current power supply, the working element in the output circuit is controlled by the control circuit, a control signal in the control circuit is transmitted by the adjusting circuit through an IC, and when the zero point detection is abnormal or the temperature of the temperature sensing resistor t is too high, the control circuit can control the working element to stop working, so that the temperature of the working element and the power of the working element can be accurately controlled.
As a further aspect of the present invention: the working element is a heating wire, and when the zero point detection is abnormal or the temperature of the temperature-sensitive resistor t is too high, the control circuit can control the heating wire to stop working, so that the temperature of the heating wire is accurately controlled.
As a further aspect of the present invention: the working element is that when the zero point detection of the motor is abnormal or the temperature of the temperature sensing resistor t is overhigh, the control circuit can control the heating wire to stop working, so that the rotating speed and the temperature of the motor are accurately controlled.
Compared with the prior art, the beneficial effects of the utility model are that: simple structure compares in traditional zero point detection circuit structure simpler, and required part is less more, and temperature or power that simultaneously can effectual response work element shows, when work element is the heater, the temperature that can effectual control heater, when work element is the motor, thereby the rotational speed controlled temperature that can effectual control motor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the middle rectification circuit of the present invention.
Fig. 3 is a schematic structural diagram of the middle voltage stabilizing circuit of the present invention.
Fig. 4 is a schematic diagram of an IC in the present invention.
Fig. 5 is a schematic structural diagram of the display circuit of the present invention.
Fig. 6 is a schematic structural diagram of the adjusting circuit of the present invention.
Fig. 7 is a schematic diagram of an embodiment of the control circuit and the output circuit in the present invention.
Fig. 8 is a schematic diagram of another embodiment of the control circuit and the output circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 8, in an embodiment of the present invention, a control circuit of an ac power supply includes: the alternating current power supply, the rectifying circuit, the voltage stabilizing circuit, the IC, the regulating circuit, the control circuit, the display circuit and the output circuit, wherein alternating current in the alternating current power supply is adjusted through the rectifying power supply to form a direct current circuit and enters the voltage stabilizing circuit, a 5V working power supply is formed through the voltage stabilizing circuit to provide power for the IC, the regulating circuit and the output circuit, the alternating current power supply provides an alternating current working power supply for the output circuit, alternating current in the alternating current power supply enters the IC and carries out zero point detection on the entering alternating current through the IC, the regulating circuit transmits a regulating signal to the control circuit through the IC, the power of the output circuit is regulated through the control circuit, and the display circuit receives a power signal in the regulating circuit through the IC and.
The rectifier circuit includes: one end of the resistor R1 is connected with an alternating current power supply, the other end of the resistor R1 is connected with the capacitor C1, the other end of the capacitor C1 is connected with the switch S1, the other end of the switch is connected with the positive pole pin of the rectifier diode D2, the negative pole pin of the rectifier diode D2 is connected with the voltage stabilizing circuit, the positive pole pin of the rectifier diode D2 is further connected with the negative pole pin of the rectifier diode D1, the positive pole pin of the rectifier diode D1 is connected with the ground, the positive pole pin and the negative pole pin of the rectifier diode D1 are connected in parallel with the resistor R4, and the two end pins of the capacitor C1 are connected in parallel with the resistor R2 and the resistor R3 which are connected together in series.
The voltage stabilizing circuit comprises: the voltage stabilizing chip IC1, the 3 rd pin of voltage stabilizing chip IC1 is connected with the negative pole pin of rectifier diode D2 in the rectifier circuit, the 1 st pin of voltage stabilizing chip IC1 is connected with 5V's operating power supply, the 1 st pin of voltage stabilizing chip IC1 still is connected with one end pin of paster electric capacity C4, the other end pin of paster electric capacity C4 is connected with the 2 nd pin of voltage stabilizing chip IC1, the 2 nd pin of voltage stabilizing chip IC1 is ground, the 2 nd pin of voltage stabilizing chip IC1 still is connected with the positive pole pin of zener diode D3, the negative pole pin of zener diode D3 is connected with voltage stabilizing chip 3 rd pin, between voltage stabilizing chip 3 rd pin and voltage stabilizing chip 2 nd pin parallelly connected have electric capacity C3 and paster electric capacity C2, voltage stabilizing diode D3 voltage range 6-15V.
The IC includes: the control system comprises a control chip U1, wherein the 1 st pin of the control chip U1 is connected with a 5V working power supply, the 1 st pin of the control chip U1 is also connected with the 16 th pin of the control chip U1, a capacitor C5 is further connected in series between the 1 st pin U1 of the control chip U1 and the 16 th pin of the control chip U1, the 16 th pin of the control chip U1 is grounded, the control chip U1 is a digital IC with the model GA452AD14-SOP16, and the 6 th pin of the control chip U1 is also connected with an alternating current power supply.
The display circuit includes: a 1 st pin of a nixie tube SG1 is connected with a 10 th pin of a control chip U1, a 2 nd pin of the nixie tube SG1 is connected with an 11 th pin of a control chip U1, a 3 rd pin of the nixie tube SG1 is connected with a 12 th pin of a control chip U1, a4 th pin of the nixie tube SG1 is connected with a 9 th pin of the control chip U1, a4 th pin of the nixie tube SG1 is connected in series with a 9 th pin of the control chip U1 with a resistor R5, a 5 th pin of the nixie tube SG1 is connected with an 8 th pin of the control chip U1, a 5 th pin of the nixie tube SG1 is also connected in series with a resistor R6 on an 8 th pin of the control chip U1, a 6 th pin of the nixie tube SG1 is connected with a 7 th pin of the control chip U1, a 6 th pin of the nixie tube SG1 is connected in series with a 7 th pin of the control chip U1, and a nixie tube SG 72 is also connected with a 7 th pin of the control chip U1, and a nixie tube SG1, the 8 th pin of the nixie tube SG1 is connected with the 4 th pin of the control chip U1, the 8 th pin of the nixie tube SG1 and the 4 th pin of the control chip U1 are also connected in series with a resistor R9, the 9 th pin of the nixie tube SG1 is connected with the 6 th pin of the control chip U1, the 9 th pin of the nixie tube SG1 and the 6 th pin of the control chip U1 are also connected in series with a resistor R10, the 10 th pin of the nixie tube SG1 is connected with the 2 nd pin of the control chip U1, and the 10 th pin of the nixie tube SG1 and the 2 nd pin of the control chip U1 are also connected in series with a resistor R11.
The regulation circuit includes: the adjustable potentiometer R20 is characterized in that the adjustable potentiometer R20 is connected with a 5V working power supply, one end pin of the adjustable potentiometer R20 is connected with the 14 th pin of the control chip U1, the other end pin of the adjustable potentiometer R20 is connected with the 15 th pin of the control chip U1 while the other end pin of the adjustable potentiometer R20 is grounded, the other end pin of the adjustable potentiometer R20 is also connected with the resistor R12, the other end of the resistor R12 is connected with the 5V working power supply, a resistor C7 is connected in parallel between the 15 th pin of the control chip U1 and the 14 th pin of the control chip U1, a capacitor C6 is connected in series between the two end pins of the adjustable potentiometer R20, and a temperature-sensitive resistor t is connected in parallel between the 15 th pin of the control chip U1 and the 14 th pin of the control chip U1.
The control circuit includes: a transistor BG1, an emitter of the transistor BG1 is connected with a 5V working power supply, a base of the transistor BG1 is connected with a 13 th pin of a control chip U1, a resistor R14 is connected in series between a base of the transistor BG1 and the 13 th pin of the control chip U1, a resistor R13 is connected in parallel between the emitter of the transistor BG1 and a base of the transistor BG1, a resistor R15 is connected to a collector of the transistor BG1, the other end of the resistor R15 is connected with a base of a transistor BG2, a resistor R16 is connected in parallel between the emitter of the transistor BG2 and a base of a transistor BG2, an emitter of the transistor BG2 is grounded, a collector of the transistor BG2 is further connected with a control end of a thyristor Q2, a resistor R2 and a resistor R2 are connected in series between the collector of the transistor BG2 and a control end of the thyristor Q2, a resistor R2 is connected in parallel between the control end of the thyristor Q2 and an input end of the thyristor Q36, and the output end of the controllable silicon Q1 is connected with an output circuit.
The output circuit includes: one end of the working element is connected with the output end of the controllable silicon Q1, the other end of the working element is also connected with an alternating current power supply, the working element in the output circuit is controlled by the control circuit, a control signal in the control circuit is transmitted by the adjusting circuit through an IC, and when the zero point detection is abnormal or the temperature of the temperature sensing resistor t is too high, the control circuit can control the working element to stop working, so that the temperature of the working element and the power of the working element can be accurately controlled.
The working element is a heating wire, and when the zero point detection is abnormal or the temperature of the temperature-sensitive resistor t is too high, the control circuit can control the heating wire to stop working, so that the temperature of the heating wire is accurately controlled.
The working element is that when the zero point detection of the motor is abnormal or the temperature of the temperature sensing resistor t is overhigh, the control circuit can control the heating wire to stop working, so that the rotating speed and the temperature of the motor are accurately controlled.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A control circuit for an ac power source, comprising: the alternating current power supply, the rectifying circuit, the voltage stabilizing circuit, the IC, the regulating circuit, the control circuit, the display circuit and the output circuit, wherein alternating current in the alternating current power supply is adjusted through the rectifying power supply to form a direct current circuit and enters the voltage stabilizing circuit, a 5V working power supply is formed through the voltage stabilizing circuit to provide power for the IC, the regulating circuit and the output circuit, the alternating current power supply provides an alternating current working power supply for the output circuit, alternating current in the alternating current power supply enters the IC and carries out zero point detection on the entering alternating current through the IC, the regulating circuit transmits a regulating signal to the control circuit through the IC, the power of the output circuit is regulated through the control circuit, and the display circuit receives a power signal in the regulating circuit through the IC and.
2. The control circuit of an ac power supply according to claim 1, wherein said rectifying circuit comprises: one end of the resistor R1 is connected with an alternating current power supply, the other end of the resistor R1 is connected with the capacitor C1, the other end of the capacitor C1 is connected with the switch S1, the other end of the switch is connected with the positive pole pin of the rectifier diode D2, the negative pole pin of the rectifier diode D2 is connected with the voltage stabilizing circuit, the positive pole pin of the rectifier diode D2 is further connected with the negative pole pin of the rectifier diode D1, the positive pole pin of the rectifier diode D1 is connected with the ground, the positive pole pin and the negative pole pin of the rectifier diode D1 are connected in parallel with the resistor R4, and the two end pins of the capacitor C1 are connected in parallel with the resistor R2 and the resistor R3 which are connected together in series.
3. The control circuit of an ac power source of claim 2, wherein said voltage regulator circuit comprises: the voltage stabilizing chip IC1, the 3 rd pin of voltage stabilizing chip IC1 is connected with the negative pole pin of rectifier diode D2 in the rectifier circuit, the 1 st pin of voltage stabilizing chip IC1 is connected with 5V's operating power supply, the 1 st pin of voltage stabilizing chip IC1 still is connected with one end pin of paster electric capacity C4, the other end pin of paster electric capacity C4 is connected with the 2 nd pin of voltage stabilizing chip IC1, the 2 nd pin of voltage stabilizing chip IC1 is ground, the 2 nd pin of voltage stabilizing chip IC1 still is connected with the positive pole pin of zener diode D3, the negative pole pin of zener diode D3 is connected with voltage stabilizing chip 3 rd pin, between voltage stabilizing chip 3 rd pin and voltage stabilizing chip 2 nd pin parallelly connected have electric capacity C3 and paster electric capacity C2, rectifier diode D3 voltage range 6-15V.
4. The control circuit of an ac power supply according to claim 1, wherein said IC comprises: the control system comprises a control chip U1, wherein the 1 st pin of the control chip U1 is connected with a 5V working power supply, the 1 st pin of the control chip U1 is also connected with the 16 th pin of the control chip U1, a capacitor C5 is further connected in series between the 1 st pin U1 of the control chip U1 and the 16 th pin of the control chip U1, the 16 th pin of the control chip U1 is grounded, the control chip U1 is a digital IC with the model GA452AD14-SOP16, and the 6 th pin of the control chip U1 is also connected with an alternating current power supply.
5. The control circuit of an ac power supply according to claim 1, wherein the display circuit comprises: a 1 st pin of a nixie tube SG1 is connected with a 10 th pin of a control chip U1, a 2 nd pin of the nixie tube SG1 is connected with an 11 th pin of a control chip U1, a 3 rd pin of the nixie tube SG1 is connected with a 12 th pin of a control chip U1, a4 th pin of the nixie tube SG1 is connected with a 9 th pin of the control chip U1, a4 th pin of the nixie tube SG1 is connected in series with a 9 th pin of the control chip U1 with a resistor R5, a 5 th pin of the nixie tube SG1 is connected with an 8 th pin of the control chip U1, a 5 th pin of the nixie tube SG1 is also connected in series with a resistor R6 on an 8 th pin of the control chip U1, a 6 th pin of the nixie tube SG1 is connected with a 7 th pin of the control chip U1, a 6 th pin of the nixie tube SG1 is connected in series with a 7 th pin of the control chip U1, and a nixie tube SG 72 is also connected with a 7 th pin of the control chip U1, and a nixie tube SG1, the 8 th pin of the nixie tube SG1 is connected with the 4 th pin of the control chip U1, the 8 th pin of the nixie tube SG1 and the 4 th pin of the control chip U1 are also connected in series with a resistor R9, the 9 th pin of the nixie tube SG1 is connected with the 6 th pin of the control chip U1, the 9 th pin of the nixie tube SG1 and the 6 th pin of the control chip U1 are also connected in series with a resistor R10, the 10 th pin of the nixie tube SG1 is connected with the 2 nd pin of the control chip U1, and the 10 th pin of the nixie tube SG1 and the 2 nd pin of the control chip U1 are also connected in series with a resistor R11.
6. The control circuit of an ac power source according to claim 1, wherein the regulating circuit comprises: the adjustable potentiometer R20 is characterized in that the adjustable potentiometer R20 is connected with a 5V working power supply, one end pin of the adjustable potentiometer R20 is connected with the 14 th pin of the control chip U1, the other end pin of the adjustable potentiometer R20 is connected with the 15 th pin of the control chip U1 while the other end pin of the adjustable potentiometer R20 is grounded, the other end pin of the adjustable potentiometer R20 is also connected with the resistor R12, the other end of the resistor R12 is connected with the 5V working power supply, a resistor C7 is connected in parallel between the 15 th pin of the control chip U1 and the 14 th pin of the control chip U1, a capacitor C6 is connected in series between the two end pins of the adjustable potentiometer R20, and a temperature-sensitive resistor t is connected in parallel between the 15 th pin of the control chip U1 and the 14 th pin of the control chip U1.
7. The control circuit of an ac power source as claimed in claim 1, wherein the control circuit comprises: a transistor BG1, an emitter of the transistor BG1 is connected with a 5V working power supply, a base of the transistor BG1 is connected with a 13 th pin of a control chip U1, a resistor R14 is connected in series between a base of the transistor BG1 and the 13 th pin of the control chip U1, a resistor R13 is connected in parallel between the emitter of the transistor BG1 and a base of the transistor BG1, a resistor R15 is connected to a collector of the transistor BG1, the other end of the resistor R15 is connected with a base of a transistor BG2, a resistor R16 is connected in parallel between the emitter of the transistor BG2 and a base of a transistor BG2, an emitter of the transistor BG2 is grounded, a collector of the transistor BG2 is further connected with a control end of a thyristor Q2, a resistor R2 and a resistor R2 are connected in series between the collector of the transistor BG2 and a control end of the thyristor Q2, a resistor R2 is connected in parallel between the control end of the thyristor Q2 and an input end of the thyristor Q36, and the output end of the controllable silicon Q1 is connected with an output circuit.
8. The control circuit of an ac power supply according to claim 7, wherein said output circuit comprises: one end of the working element is connected with the output end of the controllable silicon Q1, the other end of the working element is also connected with an alternating current power supply, the working element in the output circuit is controlled by the control circuit, a control signal in the control circuit is transmitted by the adjusting circuit through an IC, and when the zero point detection is abnormal or the temperature of the temperature sensing resistor t is too high, the control circuit can control the working element to stop working, so that the temperature of the working element and the power of the working element can be accurately controlled.
9. The control circuit of claim 8, wherein the operating element is a heating wire, and when the zero point detection is abnormal or the temperature of the temperature sensing resistor t ° is too high, the control circuit controls the heating wire to stop operating, thereby accurately controlling the temperature of the heating wire.
10. The control circuit of claim 8, wherein the operating element is a motor, and when the zero point detection is abnormal or the temperature of the temperature sensing resistor t ° is too high, the control circuit controls the heating wire to stop operating, so as to accurately control the rotation speed and temperature of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921341850.2U CN210181491U (en) | 2019-08-19 | 2019-08-19 | Control circuit of alternating current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921341850.2U CN210181491U (en) | 2019-08-19 | 2019-08-19 | Control circuit of alternating current power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210181491U true CN210181491U (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921341850.2U Active CN210181491U (en) | 2019-08-19 | 2019-08-19 | Control circuit of alternating current power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210181491U (en) |
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2019
- 2019-08-19 CN CN201921341850.2U patent/CN210181491U/en active Active
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