CN106026670A - Frequency modulation type constant-voltage output power supply based on overvoltage protection circuit - Google Patents
Frequency modulation type constant-voltage output power supply based on overvoltage protection circuit Download PDFInfo
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- CN106026670A CN106026670A CN201610519329.8A CN201610519329A CN106026670A CN 106026670 A CN106026670 A CN 106026670A CN 201610519329 A CN201610519329 A CN 201610519329A CN 106026670 A CN106026670 A CN 106026670A
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- audion
- pole
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- amplifier
- outfan
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a frequency modulation type constant-voltage output power supply based on an overvoltage protection circuit. The frequency modulation type constant-voltage output power supply is characterized by mainly comprising a transformer T, a diode D1, a triode VT5, a base trigger circuit respectively connected with the primary-side inductive coil L1 and the primary-side inductive coil L2 of the transformer T, and an overvoltage protection circuit connected with the dotted terminal of the primary-side inductive coil L1 of the transformer T. According to the technical scheme of the invention, the input voltage is monitored, and the voltage is regulated in real time. Therefore, the voltage is maintained within a constant range. In this way, even when the commercial power fluctuates, the output voltage is ensured to be constant. The frequency of the voltage can also be regulated, so that the frequency of the output voltage is more stable. As a result, the power supply can better supply power to electronic devices. Meanwhile, the circuit can be automatically switched off when the input voltage is in the overvoltage condition. Therefore, the system is protected from being damaged by the overvoltage.
Description
Technical field
The present invention relates to electronic applications, specifically refer to the output of a kind of frequency modulation type constant voltage based on overvoltage crowbar
Power supply.
Background technology
Along with the high speed development of electronic technology, the kind of electronic equipment also gets more and more, to the life band of people
Carry out the biggest enjoyment.Any electronic equipment all be unable to do without reliable power supply, and the function of current electronic equipment is more
Coming the most diversified, they are more and more higher to the requirement of power supply.But current power supply stability is relatively low, hold
It is vulnerable to civil power influence of fluctuations, causes its output voltage unstable, have a strong impact on the service life of electronic equipment.
Summary of the invention
It is an object of the invention to solve the defect that current power supply stability is relatively low, it is provided that a kind of based on overvoltage
The frequency modulation type constant voltage out-put supply of protection circuit.
The purpose of the present invention is by following technical proposals reality: a kind of frequency modulation type based on overvoltage crowbar is permanent
Pressure out-put supply, mainly by transformator T, diode D1, audion VT5, respectively former with transformator T
The base stage that limit inductance coil L1 and former limit inductance coil L2 is connected triggers circuit, with the former limit of transformator T
The overvoltage crowbar that the Same Name of Ends of inductance coil L1 is connected, one end is triggered circuit with base stage and is connected, separately
The P pole of one end and diode D1 is collectively forming the resistance R1 of input, and positive pole is electric with the secondary of transformator T
The non-same polarity of sense coil L2 is connected, negative pole colelctor electrode with audion VT5 after resistance R6 is connected
Electric capacity C6, trigger, with audion VT5 and base stage, the sample circuit that circuit is connected respectively, respectively with sampling
Circuit and base stage trigger the FM circuit that circuit is connected, and with the secondary inductance coil L3 phase of transformator T
The voltage-stabilizing output circuit composition connected；The N pole of described diode D1 is connected with overvoltage crowbar.
Further, described FM circuit by amplifier P1, amplifier P2, amplifier P3, audion VT10,
Audion VT11, positive pole is connected with the base stage of audion VT10, negative pole triggers circuit with base stage and is connected
Electric capacity C9, N pole be connected with the positive pole of amplifier P1, P pole is connected with the colelctor electrode of audion VT10
The diode D7 connect, one end is connected with the emitter stage of audion VT10, the other end is followed by through resistance R13
The resistance R12 on ground, is serially connected in the resistance R15 between positive pole and the outfan of amplifier P1, is serially connected in amplification
Resistance R14 between negative pole and the positive pole of amplifier P2 of device P1, positive pole is connected with the negative pole of amplifier P2
Connect, negative pole be connected with the emitter stage of audion VT11 while the electric capacity C10 of ground connection, be serially connected in amplifier
Resistance R16 between outfan and the positive pole of amplifier P3 of P1, be serially connected in amplifier P1 outfan and
Resistance R17 between the negative pole of amplifier P3, and P pole is connected with the colelctor electrode of audion VT11,
The diode D8 composition that N pole is connected with the outfan of amplifier P3；The negative pole of described amplifier P1 and its
Positive pole is connected, its outfan then colelctor electrode with audion VT11 is connected；Described amplifier P2 is just
Pole is connected with the junction point of resistance R12 and resistance R13, its outfan then with the base stage of audion VT11
It is connected；The outfan of described amplifier P3 is connected with sample circuit.
Described overvoltage crowbar by audion VT6, audion VT7, audion VT8, audion VT9,
Resistance R8, the N pole and three being serially connected between the emitter stage of audion VT6 and the colelctor electrode of audion VT7
The base stage of pole pipe VT8 is connected, P pole colelctor electrode with audion VT6 after electric capacity C8 is connected two
Pole pipe D5, the resistance R9 being serially connected between the base stage of audion VT7 and the base stage of audion VT8, concatenation
Resistance R10 between the emitter stage and the emitter stage of audion VT9 of audion VT6, one end and audion
The emitter stage of VT9 is connected, the resistance R11 of other end ground connection, and the current collection of P pole and audion VT9
The diode D6 composition that pole is connected, N pole is connected with the emitter stage of audion VT7；Described audion
The base stage of VT6 as the input of this overvoltage crowbar and be connected with the N pole of diode D1, its collection
Electrode ground connection；The colelctor electrode of described audion VT8 is connected with the emitter stage of audion VT7, its emitter stage
It is connected with the base stage of audion VT9；The emitter stage of described audion VT7 is as this overvoltage crowbar
Outfan the Same Name of Ends with the former limit inductance coil L1 of transformator T are connected.
Described base stage triggering circuit is by audion VT1, audion VT2, and positive pole is defeated with overvoltage crowbar
Go out the polar capacitor C1 that end is connected, negative pole emitter stage with audion VT1 after resistance R3 is connected,
Resistance R2, the N pole and three being serially connected between the outfan of overvoltage crowbar and the colelctor electrode of audion VT1
The diode D2 that the base stage of pole pipe VT1 is connected, P pole is connected with the emitter stage of audion VT2, with
And positive pole is connected with the outfan of overvoltage crowbar, negative pole is connected with the colelctor electrode of audion VT2
Electric capacity C2 forms；The emitter stage of described audion VT2 is connected with the emitter stage of audion VT1, its collection
Electrode is connected with the non-same polarity of the former limit inductance coil L1 of transformator T, its base stage then with sample circuit phase
Connect；The former Same Name of Ends of limit inductance coil L2 of described transformator T is connected with the emitter stage of audion VT2
Connect；The negative pole of described polar capacitor C1 is connected with the negative pole of electric capacity C9.
Described sample circuit is by audion VT3, audion VT4, amplifier P, and positive pole is with amplifier P3's
The electric capacity C3 that outfan is connected, negative pole is connected with the base stage of audion VT3, is serially connected in audion VT2
Base stage and the colelctor electrode of audion VT4 between resistance R4, the emitter stage phase of positive pole and audion VT4
Connect, the electric capacity C4 that is connected with the emitter stage of audion VT3 of negative pole, be serially connected in the positive pole of amplifier P with
Resistance R5 between outfan, and positive pole is connected with the negative pole of amplifier P, negative pole and audion VT3
Emitter stage be connected while ground connection electric capacity C5 composition；The base stage of described audion VT4 and audion
The colelctor electrode of VT3 is connected, its colelctor electrode is connected with the positive pole of amplifier P；Described audion VT5's
Base stage is connected with the outfan of amplifier P, its emitter stage is connected with the emitter stage of audion VT3.
Described voltage-stabilizing output circuit is connected by the non-same polarity of P pole with the secondary inductance coil L3 of transformator T
Connect, the Same Name of Ends of the secondary inductance coil L3 of N pole and transformator T is collectively forming the Zener diode of outfan
D3, positive pole is connected with the N pole of Zener diode D3, negative pole after resistance R7 with the pair of transformator T
The electric capacity C7 that the Same Name of Ends of limit inductance coil L3 is connected, and the N pole of N pole and Zener diode D3
Be connected, Zener diode that P pole then Same Name of Ends with the secondary inductance coil L3 of transformator T is connected
D4 forms.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) voltage of input can be monitored by the present invention, and is adjusted voltage in real time, makes voltage
Maintaining in constant scope, so, even if fluctuation occurs in civil power, the present invention can also export constant electricity
Pressure so that it is can be preferably power electronic equipment.
(2) present invention can when there is overvoltage in input voltage automatic shutoff circuit, thus protect system not
Damaged by overvoltage.
(3) electric voltage frequency can be adjusted by the present invention, makes electric voltage frequency more stable.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the structure chart of the overvoltage crowbar of the present invention.
Fig. 3 is the structure chart of the FM circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by transformator T, diode D1, audion VT5, respectively with change
The base stage that the former limit inductance coil L1 and former limit inductance coil L2 of depressor T is connected triggers circuit, with transformation
The overvoltage crowbar that the Same Name of Ends of the former limit inductance coil L1 of device T is connected, circuit is triggered with base stage in one end
Be connected, the P pole of the other end and diode D1 is collectively forming the resistance R1 of input, positive pole and transformator
The non-same polarity of the secondary inductance coil L2 of T is connected, negative pole after resistance R6 with the collection of audion VT5
The electric capacity C6 that electrode is connected, triggers, with audion VT5 and base stage, the sample circuit that circuit is connected respectively,
The FM circuit that circuit is connected is triggered respectively with sample circuit and base stage, and electric with the secondary of transformator T
The voltage-stabilizing output circuit composition that sense coil L3 is connected；The N pole of described diode D1 and overvoltage crowbar
It is connected.
Described base stage triggers circuit by audion VT1, audion VT2, resistance R2, resistance R3, polarity
Electric capacity C1, electric capacity C2 and diode D2 form.
Wherein, the positive pole of polar capacitor C1 is connected with the outfan of overvoltage crowbar, its negative pole is through resistance
After R3, the emitter stage with audion VT1 is connected.Resistance R2 be serially connected in overvoltage crowbar outfan and
Between the colelctor electrode of audion VT1.The N pole of diode D2 is connected with the base stage of audion VT1, it
P pole is connected with the emitter stage of audion VT2.The outfan phase of the positive pole of electric capacity C2 and overvoltage crowbar
Connect, its negative pole is connected with the colelctor electrode of audion VT2.
The emitter stage of described audion VT2 is connected with the emitter stage of audion VT1, its colelctor electrode and transformation
The non-same polarity of the former limit inductance coil L1 of device T is connected, its base stage is then connected with sample circuit.Described
The former Same Name of Ends of limit inductance coil L2 of transformator T is connected with the emitter stage of audion VT2.Described pole
The negative pole of property electric capacity C1 is connected with FM circuit.
It addition, described sample circuit is by audion VT3, audion VT4, amplifier P, resistance R4, electricity
Resistance R5, electric capacity C3, electric capacity C4 and electric capacity C5.
During connection, the positive pole of electric capacity C3 is connected with FM circuit, the base stage of its negative pole and audion VT3
It is connected.Resistance R4 is serially connected between the base stage of audion VT2 and the colelctor electrode of audion VT4.Electric capacity
The positive pole of C4 is connected with the emitter stage of audion VT4, its negative pole is connected with the emitter stage of audion VT3
Connect.Resistance R5 is serially connected between positive pole and the outfan of amplifier P.The positive pole of electric capacity C5 and amplifier P
Negative pole be connected, its negative pole be connected with the emitter stage of audion VT3 while ground connection.
Meanwhile, the base stage of described audion VT4 be connected with the colelctor electrode of audion VT3, its colelctor electrode with
The positive pole of amplifier P is connected.The base stage of described audion VT5 is connected with the outfan of amplifier P,
Its emitter stage is connected with the emitter stage of audion VT3.
Described voltage-stabilizing output circuit is by Zener diode D3, Zener diode D4, electric capacity C7 and resistance
R7 forms.During connection, the P pole of Zener diode D3 is non-same with the secondary inductance coil L3's of transformator T
Name end is connected, its N pole is collectively forming outfan with the Same Name of Ends of the secondary inductance coil L3 of transformator T.
The positive pole of electric capacity C7 is connected with the N pole of Zener diode D3, its negative pole after resistance R7 with transformator
The Same Name of Ends of the secondary inductance coil L3 of T is connected.The N pole of Zener diode D4 and Zener diode D3
N pole be connected, its P pole then Same Name of Ends with the secondary inductance coil L3 of transformator T is connected.
As in figure 2 it is shown, described overvoltage crowbar is by audion VT6, audion VT7, audion VT8,
Audion VT9, resistance R8, resistance R9, resistance R10, resistance R11, electric capacity C8, diode D5
And diode D6 composition.
During connection, resistance R8 is serially connected between the emitter stage of audion VT6 and the colelctor electrode of audion VT7.
The N pole of diode D5 is connected with the base stage of audion VT8, its P pole after electric capacity C8 with audion
The colelctor electrode of VT6 is connected.Resistance R9 is serially connected in base stage and the base stage of audion VT8 of audion VT7
Between.Resistance R10 is serially connected between the emitter stage of audion VT6 and the emitter stage of audion VT9.Resistance
One end of R11 is connected with the emitter stage of audion VT9, its other end ground connection.The P pole of diode D6
Be connected with the colelctor electrode of audion VT9, its N pole is connected with the emitter stage of audion VT7.
Meanwhile, the base stage of described audion VT6 as this overvoltage crowbar input and with diode D1
N pole be connected, its grounded collector.The colelctor electrode of described audion VT8 and the transmitting of audion VT7
Pole is connected, its emitter stage is connected with the base stage of audion VT9.The emitter stage of described audion VT7 is made
For the outfan of this overvoltage crowbar and it is connected with the Same Name of Ends of the former limit inductance coil L1 of transformator T.
As it is shown on figure 3, this FM circuit is by amplifier P1, amplifier P2, amplifier P3, audion VT10,
Audion VT11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17,
Diode D7, diode D8, electric capacity C9 and electric capacity C10 form.
During connection, the positive pole of electric capacity C9 is connected with the base stage of audion VT10, negative pole and polar capacitor C1
Negative pole be connected.The N pole of diode D7 is connected with the positive pole of amplifier P1, its P pole and audion
The colelctor electrode of VT10 is connected.One end of resistance R12 is connected with the emitter stage of audion VT10, it is another
One end is ground connection after resistance R13.Resistance R15 is serially connected between positive pole and the outfan of amplifier P1.Resistance
R14 is serially connected between the negative pole of amplifier P1 and the positive pole of amplifier P2.The positive pole of electric capacity C10 and amplification
Ground connection while the negative pole of device P2 is connected, its negative pole is connected with the emitter stage of audion VT11.Resistance
R16 is serially connected between the outfan of amplifier P1 and the positive pole of amplifier P3.Resistance R17 is serially connected in amplification
Between outfan and the negative pole of amplifier P3 of device P1.The P pole of diode D8 and the collection of audion VT11
Electrode is connected, its N pole is connected with the outfan of amplifier P3.
The negative pole of described amplifier P1 is connected with its positive pole, its outfan then with the current collection of audion VT11
Pole is connected.The positive pole of described amplifier P2 is connected with the junction point of resistance R12 and resistance R13, it is defeated
Go out the end base stage then with audion VT11 to be connected.The outfan of described amplifier P3 is with electric capacity C3 just
Pole is connected.
The voltage of input can be monitored by the present invention, and is adjusted voltage in real time, makes voltage maintain
In constant scope, so, even if fluctuation occurs in civil power, the present invention can also export constant voltage；
Electric voltage frequency can also be adjusted by the present invention, and the frequency making output voltage is more stable, so that this
Bright can be preferably power electronic equipment.Meanwhile, the present invention can when overvoltage occurs in input voltage certainly
Dynamic circuit breaker open circuit, thus protect system not damaged by overvoltage.
As it has been described above, just can well realize the present invention.
Claims (6)
1. a frequency modulation type constant voltage out-put supply based on overvoltage crowbar, it is characterised in that: main by becoming
Depressor T, diode D1, audion VT5, respectively with former limit inductance coil L1 and the former limit of transformator T
The base stage that inductance coil L2 is connected triggers circuit, with the Same Name of Ends of the former limit inductance coil L1 of transformator T
The overvoltage crowbar being connected, one end and base stage trigger circuit be connected, the P of the other end and diode D1
Pole is collectively forming the non-same polarity of the secondary inductance coil L2 of the resistance R1 of input, positive pole and transformator T
Be connected, electric capacity C6 that negative pole colelctor electrode with audion VT5 after resistance R6 is connected, respectively with three
Pole pipe VT5 triggers the sample circuit that circuit is connected with base stage, triggers circuit with sample circuit and base stage respectively
The FM circuit being connected, and the voltage-stabilizing output circuit being connected with the secondary inductance coil L3 of transformator T
Composition；The N pole of described diode D1 is connected with overvoltage crowbar.
A kind of frequency modulation type constant voltage out-put supply based on overvoltage crowbar the most according to claim 1,
It is characterized in that: described FM circuit by amplifier P1, amplifier P2, amplifier P3, audion VT10,
Audion VT11, positive pole is connected with the base stage of audion VT10, negative pole triggers circuit with base stage and is connected
Electric capacity C9, N pole be connected with the positive pole of amplifier P1, P pole is connected with the colelctor electrode of audion VT10
The diode D7 connect, one end is connected with the emitter stage of audion VT10, the other end is followed by through resistance R13
The resistance R12 on ground, is serially connected in the resistance R15 between positive pole and the outfan of amplifier P1, is serially connected in amplification
Resistance R14 between negative pole and the positive pole of amplifier P2 of device P1, positive pole is connected with the negative pole of amplifier P2
Connect, negative pole be connected with the emitter stage of audion VT11 while the electric capacity C10 of ground connection, be serially connected in amplifier
Resistance R16 between outfan and the positive pole of amplifier P3 of P1, be serially connected in amplifier P1 outfan and
Resistance R17 between the negative pole of amplifier P3, and P pole is connected with the colelctor electrode of audion VT11,
The diode D8 composition that N pole is connected with the outfan of amplifier P3；The negative pole of described amplifier P1 and its
Positive pole is connected, its outfan then colelctor electrode with audion VT11 is connected；Described amplifier P2 is just
Pole is connected with the junction point of resistance R12 and resistance R13, its outfan then with the base stage of audion VT11
It is connected；The outfan of described amplifier P3 is connected with sample circuit.
A kind of frequency modulation type constant voltage out-put supply based on overvoltage crowbar the most according to claim 2,
It is characterized in that: described overvoltage crowbar is by audion VT6, audion VT7, audion VT8, three
Pole pipe VT9, the resistance R8 being serially connected between the emitter stage of audion VT6 and the colelctor electrode of audion VT7,
N pole is connected with the base stage of audion VT8, P pole after electric capacity C8 with the colelctor electrode phase of audion VT6
The diode D5 connected, is serially connected in the resistance between the base stage of audion VT7 and the base stage of audion VT8
R9, the resistance R10 being serially connected between the emitter stage of audion VT6 and the emitter stage of audion VT9, one end
Be connected with the emitter stage of audion VT9, the resistance R11 of other end ground connection, and P pole and audion VT9
The diode D6 that colelctor electrode is connected, N pole is connected with the emitter stage of audion VT7 composition；Described
The base stage of audion VT6 as the input of this overvoltage crowbar and be connected with the N pole of diode D1,
Its grounded collector；The colelctor electrode of described audion VT8 is connected with the emitter stage of audion VT7, it
Emitter-base bandgap grading is connected with the base stage of audion VT9；The emitter stage of described audion VT7 is as this overvoltage protection electricity
The outfan on road is also connected with the Same Name of Ends of the former limit inductance coil L1 of transformator T.
A kind of frequency modulation type constant voltage out-put supply based on overvoltage crowbar the most according to claim 3,
It is characterized in that: described base stage triggers circuit by audion VT1, audion VT2, positive pole and overvoltage protection
The polarity that the outfan of circuit is connected, negative pole emitter stage with audion VT1 after resistance R3 is connected
Electric capacity C1, the resistance R2 being serially connected between the outfan of overvoltage crowbar and the colelctor electrode of audion VT1,
The diode that N pole is connected with the base stage of audion VT1, P pole is connected with the emitter stage of audion VT2
D2, and positive pole is connected with the outfan of overvoltage crowbar, the colelctor electrode phase of negative pole and audion VT2
The electric capacity C2 composition connected；The emitter stage of described audion VT2 is connected with the emitter stage of audion VT1,
Its colelctor electrode is connected with the non-same polarity of the former limit inductance coil L1 of transformator T, its base stage is then electric with sampling
Road is connected；The Same Name of Ends of the former limit inductance coil L2 of described transformator T and the emitter stage of audion VT2
It is connected；The negative pole of described polar capacitor C1 is connected with the negative pole of electric capacity C9.
A kind of frequency modulation type constant voltage out-put supply based on overvoltage crowbar the most according to claim 4,
It is characterized in that: described sample circuit by audion VT3, audion VT4, amplifier P, positive pole with put
The electric capacity C3 that outfan is connected, negative pole is connected with the base stage of audion VT3 of big device P3, is serially connected in
Resistance R4 between base stage and the colelctor electrode of audion VT4 of audion VT2, positive pole and audion VT4
The electric capacity C4 that emitter stage is connected, negative pole is connected with the emitter stage of audion VT3, be serially connected in amplifier
Resistance R5 between positive pole and the outfan of P, and positive pole is connected with the negative pole of amplifier P, negative pole with
The emitter stage of audion VT3 be connected while ground connection electric capacity C5 composition；The base of described audion VT4
Pole is connected with the colelctor electrode of audion VT3, its colelctor electrode is connected with the positive pole of amplifier P；Described three
The base stage of pole pipe VT5 is connected with the outfan of amplifier P, the emitter stage of its emitter stage and audion VT3
It is connected.
A kind of frequency modulation type constant voltage out-put supply based on overvoltage crowbar the most according to claim 5,
It is characterized in that: described voltage-stabilizing output circuit is non-of the same name by P pole and the secondary inductance coil L3's of transformator T
End is connected, the Same Name of Ends of the secondary inductance coil L3 of N pole and transformator T is collectively forming the voltage stabilizing of outfan
Diode D3, positive pole is connected with the N pole of Zener diode D3, negative pole after resistance R7 with transformator T
The electric capacity C7 that is connected of the Same Name of Ends of secondary inductance coil L3, and the N of N pole and Zener diode D3
The Zener diode that pole is connected, P pole then Same Name of Ends with the secondary inductance coil L3 of transformator T is connected
D4 forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519329.8A CN106026670A (en) | 2016-07-04 | 2016-07-04 | Frequency modulation type constant-voltage output power supply based on overvoltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519329.8A CN106026670A (en) | 2016-07-04 | 2016-07-04 | Frequency modulation type constant-voltage output power supply based on overvoltage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106026670A true CN106026670A (en) | 2016-10-12 |
Family
ID=57106502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610519329.8A Pending CN106026670A (en) | 2016-07-04 | 2016-07-04 | Frequency modulation type constant-voltage output power supply based on overvoltage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106026670A (en) |
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2016
- 2016-07-04 CN CN201610519329.8A patent/CN106026670A/en active Pending
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Application publication date: 20161012 |