CN201757867U - High-power circuit with adjustable magnetic saturable transformer - Google Patents
High-power circuit with adjustable magnetic saturable transformer Download PDFInfo
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- CN201757867U CN201757867U CN201020284691XU CN201020284691U CN201757867U CN 201757867 U CN201757867 U CN 201757867U CN 201020284691X U CN201020284691X U CN 201020284691XU CN 201020284691 U CN201020284691 U CN 201020284691U CN 201757867 U CN201757867 U CN 201757867U
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Abstract
The utility model discloses a high-power circuit with an adjustable magnetic saturable transformer, and relates to the winding and application of the magnetic saturable transformer, an incoming circuit and a compensation circuit of field current. The magnitude of current of an internal wire coil of a magnetic saturable transformer is changed for changing the magnitude of inductance value of wire coils on two arms of a magnetic core, so as to change the ratio of inductance value of a primary wire coil of a main-transformer and further to change the magnitude of input. The adjustment and voltage regulation of output voltage are realized by utilizing the method. Field current is led in during no load through an MOS (metal-oxide semiconductor) tube, a circuit to which the field current is led stops working when an output circuit is connected to a load, the power loss is reduced, and the number of heating elements is reduced. A compensation circuit is led in during heavy duty in case of voltage drop, and the voltage output is increased through compensating the magnitude of feedback voltage by sampling current in a main circuit.
Description
Technical field
The utility model relates to electronic circuit field, is specially the high-power circuit that a kind of magnetic saturation transformer is regulated.
Background technology
Along with the continuous development of electronic technology, various circuit are developed, and for power supply, the stability of output is a very important techniques index.Traditional voltage-regulation scope based in the linear voltage stabilization is little, and it is big to adjust the pipe power consumption, and heating is high, and output power is little.This has seriously restricted the range of application of linear voltage stabilization.
The utility model content
The purpose of this utility model provides the high-power circuit that a kind of magnetic saturation transformer is regulated, and is little to solve traditional linear voltage stabilization voltage-regulation scope, and it is big to adjust the pipe power consumption, and heating is high, the problem that output power is little.
In order to achieve the above object, the technical scheme that the utility model adopted is:
The high-power circuit that a kind of magnetic saturation transformer is regulated, include the magnetic saturation transformer, two triode common emitters, the differential amplifier circuit that common collector constitutes, there are two conductor wire end to draw in the described magnetic saturation transformer as feedback end, the input lead that has two-way to be connected with the external parties wave generator, wherein one road input lead inserts in the magnetic saturation transformer, be connected to the pressure feedback port that is connected to described differential amplifier circuit behind first rectifier bridge that four diodes constitute again on another road input lead, the input end of described first rectifier bridge also is connected with described magnetic saturation transformer to introduce sampled signal by lead, also include the boosting voltage input lead that is connected with outside accessory power supply, be connected to second rectifier bridge that four diodes constitute on the described boosting voltage input lead, behind three terminal regulator that described second rectification bridge output end is connected, be connected to the reference voltage terminal of described differential amplifier circuit again, be connected to potentiometer on the reference voltage adjustable side of described differential amplifier circuit, an output terminal of described differential amplifier circuit is connected to the base stage of a triode, be connected to resistance between the base stage of described triode and the emitter, the collector of described triode is connected with a feedback end of magnetic saturation transformer, and described differential amplifier circuit common emitter end is connected with another feedback end of magnetic saturation transformer circuit by resistance.
The high-power circuit that described a kind of magnetic saturation transformer is regulated, it is characterized in that: also include field effect transistor, triode, four the 3rd rectifier bridges that diode constitutes, the source electrode of described field effect transistor and drain electrode are connected to behind the resistance in parallel with described first rectifier bridge by the resistance of source electrode and drain electrode respectively, the collector of described triode is connected with the grid of field effect transistor, the emitter of triode is connected with resistance on the field effect transistor source electrode, after being connected to the resistance and voltage stabilizing diode of series connection on the base stage of described triode, the emitter of triode is connected with the output terminal of the 3rd rectifier bridge respectively, and described the 3rd rectifier bridge connects with described another road input lead that is connected with the first rectifier bridge input end by a transformer.
The high-power circuit that described a kind of magnetic saturation transformer is regulated, it is characterized in that: also include two parallel diodes, be parallel with filter capacitor parallel with one another on one of them diode, be connected to the pressure feedback port of described differential amplifier circuit behind the resistance, be parallel with filter capacitor parallel with one another on another diode, resistance reaches and described filter capacitor parallel with one another, behind another resistance of resistance series connection, be connected to the pressure feedback port of described differential amplifier circuit again, described diode also connects with described another road input lead that is connected with the first rectifier bridge input end by transformer respectively.
The utility model voltage-regulation scope is big, and the electron device power consumption is little, and it is low to generate heat, and output power of circuit is big.Adopt the EI magnetic core, coiling multiturn lead is as the feedback end of saturation coil on skeleton, simultaneously on magnetic core two arms the lead of a small amount of number of turn of coiling as circuit in the branch pressure-controlled (will guarantee inductive electromagnetic direction magnetic core two arms on consistent) elementary with main-transformer.The size of the feedback current by the Control and Feedback end in the circuit changes in the magnetic saturation transformer size of inductance value on magnetic core two arms, thereby the ratio that changes the elementary inductance value of itself and main-transformer reaches the purpose of regulating with voltage stabilizing.
Description of drawings
Fig. 1 is basic working circuit diagram.
Fig. 2 for solve circuit when unloaded voltage transfer the working circuit diagram that does not get off to introduce exciting current.
Electric voltage dropping was introduced the working circuit diagram of compensating circuit too much when Fig. 3 was with heavy duty for solving.
Embodiment
As shown in Figure 1.A, the B two ends are input as the square wave of certain frequency, through main-transformer and magnetic saturation transformer B3, B4 (below be referred to as the magnetic saturation transformer), the elementary and magnetic saturation transformer dividing potential drop by main-transformer.C, the D two ends are the boosting voltage input end, are used as V26 among the figure, the reference potential of the differential amplifier that two triodes of V27 are formed through overcommutation and required burning voltage of stabilivolt output.Inserting a sampling with the elementary position in parallel of main-transformer, through V11, V12, V13, after the rectifier bridge that four diodes of V14 are formed as the feedback voltage of differential amplifier.Work as A, when B end input voltage raises, can raise through the current potential of over-sampling circuit to differential amplifier, make the R14 both end voltage reduce, thereby the C of V25, the pressure drop at E the two poles of the earth raises, and inserts a of magnetic saturation transformer, the b both end voltage reduces electric current and reduces, and makes the elementary dividing potential drop of main-transformer reduce and reaches the effect of voltage stabilizing.Thereby the size by potentiometer among the adjusting figure can change the purpose that benchmark reaches adjusting.
As shown in Figure 2.Owing to allowing the work of magnetic saturation transformer, that will introduce an exciting current, but not have electric current basically by the magnetic saturation transformer when zero load in circuit, and this transformer just can not play the purpose of dividing potential drop like this, and voltage drop is not got off when causing zero load.Will introduce an exciting current for this reason, and allow it in zero load, work, not work when band carries.As Fig. 2, on the basis of former feedback circuit in parallel one by two high-power little resistance resistance and metal-oxide-semiconductor, get suitable resistance value and make V28 be in half conducting state, thereby do not have exciting current when the zero load and make problem under voltage drop is not with regard to having solved the magnetic saturation transformer.But how to accomplish that circuit is not worked when band carries, this just requires to adopt an electric current on main circuit, through overcommutation, be transformed into a voltage by R7 then, be not with when carrying, do not have voltage on the R7 when circuit, make triode V24 end, thereby introduce the circuit working of exciting current.When the circuit band carried, the electric current adopted produced voltage through R7, made the C of triode V24, the conducting of E the two poles of the earth, and the grid voltage of metal-oxide-semiconductor is zero, the metal-oxide-semiconductor drain-source utmost point ends, R10 like this, R11, the circuit of metal-oxide-semiconductor composition just quits work.So just reduce power consumption unnecessary in the circuit and reduced the heating components and parts.
As shown in Figure 3.During the heavy duty of circuit band the electric voltage dropping phenomenon can take place, for reducing the influence of this phenomenon to power parameter, we will introduce a voltage compensating circuit, reduce drop-off voltage by the Compensation Feedback current potential when output power is big.In Fig. 3, in main circuit, adopt electric current, through rectifying and wave-filtering, be transformed into voltage by R12.When load is big, the electric current that sampling is returned will be big, thereby make the R12 both end voltage raise, thereby make the R22 both end voltage raise, causing feedback voltage is the BE both end voltage reduction of V27, the R14 both end voltage raises, and the CE both end voltage of triode V25 reduces, a of transformer, b two ends electric current increases, thereby the inductance value on magnetic core two arms of magnetic saturation transformer reduces, and makes main-transformer output raise, and has reached the purpose of compensation.Here will note the size of the electric current that the value of resistance is promptly adopted in the feedback circuit, two points in the compensating circuit are separated capacitance can not be big, especially during this circuit tape pulse load, if capacitance will increase the reaction time of circuit greatly.
An advantage that also has this circuit can realize the high-order output of low level adjusting exactly. As long as carry out the high pressure isolation of the primary and secondary of main transformer, just can realize the effect of the high-order output of low level adjusting. Therefore, this circuit can generally be used for being suspended in high-order high-power circuit.
Claims (3)
1. the high-power circuit regulated of a magnetic saturation transformer, include the magnetic saturation transformer, two triode common emitters, the differential amplifier circuit that common collector constitutes, there are two conductor wire end to draw in the described magnetic saturation transformer as feedback end, the input lead that has two-way to be connected with the external parties wave generator, wherein one road input lead inserts in the magnetic saturation transformer, be connected to the pressure feedback port that is connected to described differential amplifier circuit behind first rectifier bridge that four diodes constitute again on another road input lead, the input end of described first rectifier bridge also is connected with described magnetic saturation transformer to introduce sampled signal by lead, also include the boosting voltage input lead that is connected with outside accessory power supply, be connected to second rectifier bridge that four diodes constitute on the described boosting voltage input lead, behind three terminal regulator that described second rectification bridge output end is connected, be connected to the reference voltage terminal of described differential amplifier circuit again, be connected to potentiometer on the reference voltage adjustable side of described differential amplifier circuit, an output terminal of described differential amplifier circuit is connected to the base stage of a triode, be connected to resistance between the base stage of described triode and the emitter, the collector of described triode is connected with a feedback end of magnetic saturation transformer, and described differential amplifier circuit common emitter end is connected with another feedback end of magnetic saturation transformer circuit by resistance.
2. the high-power circuit that a kind of magnetic saturation transformer according to claim 1 is regulated, it is characterized in that: also include field effect transistor, triode, four the 3rd rectifier bridges that diode constitutes, the source electrode of described field effect transistor and drain electrode are connected to behind the resistance in parallel with described first rectifier bridge by the resistance of source electrode and drain electrode respectively, the collector of described triode is connected with the grid of field effect transistor, the emitter of triode is connected with resistance on the field effect transistor source electrode, after being connected to the resistance and voltage stabilizing diode of series connection on the base stage of described triode, the emitter of triode is connected with the output terminal of the 3rd rectifier bridge respectively, and described the 3rd rectifier bridge connects with described another road input lead that is connected with the first rectifier bridge input end by a transformer.
3. the high-power circuit that a kind of magnetic saturation transformer according to claim 2 is regulated, it is characterized in that: also include two parallel diodes, be parallel with filter capacitor parallel with one another on one of them diode, be connected to the pressure feedback port of described differential amplifier circuit behind the resistance, be parallel with filter capacitor parallel with one another on another diode, resistance reaches and described filter capacitor parallel with one another, behind another resistance of resistance series connection, be connected to the pressure feedback port of described differential amplifier circuit again, described diode also connects with described another road input lead that is connected with the first rectifier bridge input end by transformer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020284691XU CN201757867U (en) | 2010-07-30 | 2010-07-30 | High-power circuit with adjustable magnetic saturable transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020284691XU CN201757867U (en) | 2010-07-30 | 2010-07-30 | High-power circuit with adjustable magnetic saturable transformer |
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| Publication Number | Publication Date |
|---|---|
| CN201757867U true CN201757867U (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020284691XU Expired - Fee Related CN201757867U (en) | 2010-07-30 | 2010-07-30 | High-power circuit with adjustable magnetic saturable transformer |
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| Country | Link |
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| CN (1) | CN201757867U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016050127A1 (en) * | 2014-09-29 | 2016-04-07 | 中兴通讯股份有限公司 | Mos tube-based constant current circuit |
| CN111082764A (en) * | 2019-12-19 | 2020-04-28 | 武汉航空仪表有限责任公司 | Single-ended input-to-differential output circuit |
-
2010
- 2010-07-30 CN CN201020284691XU patent/CN201757867U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016050127A1 (en) * | 2014-09-29 | 2016-04-07 | 中兴通讯股份有限公司 | Mos tube-based constant current circuit |
| CN111082764A (en) * | 2019-12-19 | 2020-04-28 | 武汉航空仪表有限责任公司 | Single-ended input-to-differential output circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20150730 |
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| EXPY | Termination of patent right or utility model |