CN205160420U - Voltage stabilizing circuit of brushless generator - Google Patents
Voltage stabilizing circuit of brushless generator Download PDFInfo
- Publication number
- CN205160420U CN205160420U CN201520938279.8U CN201520938279U CN205160420U CN 205160420 U CN205160420 U CN 205160420U CN 201520938279 U CN201520938279 U CN 201520938279U CN 205160420 U CN205160420 U CN 205160420U
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Abstract
The utility model relates to a voltage stabilizing circuit, especially a voltage stabilizing circuit of brushless generator, including excitation inductance, excitation electric capacity, still include output Rectifier circuit, pressure regulating circuit, switch tube, sampling circuit, feedback circuit, excitation electric capacity concatenates behind the output Rectifier circuit common and connect on the excitation winding of generator with the excitation inductance, and the positive and negative output of output Rectifier circuit is the positive negative pole of linked switch pipe respectively, the output voltage of sampling circuit sampling generator passes through feedback circuit and feeds back to the control end of switch tube, the pressure regulating circuit connects in parallel between output Rectifier circuit and switch tube. The utility model discloses output voltage to the generator samples, and through the output steady voltage that the generator is stablized to feedback circuit, control circuit, pressure regulating circuit, when the negative carrier measured time, also the syntropy is undulant thereupon for sample voltage, and control circuit is according to the reverse undulant current signal of sample voltage output to the function of dynamo output voltage is stabilized in the realization.
Description
Technical field
The utility model relates to a kind of voltage stabilizing circuit, especially a kind of voltage stabilizing circuit of brushless generator.
Background technology
Brushless generator adopts the mode of parallel connection outside electric capacity to carry out burning voltage usually.During generator operation, the magnet exciting coil generation resonance of electric capacity and generator and produce exciting voltage.This voltage regulation way shortcoming of brushless generator is that the output voltage of generator can raise along with the increase of load, has had a strong impact on the safety of electric appliance load.
Utility model content
The utility model provides a kind of voltage stabilizing circuit of brushless generator, and the output voltage solving brushless generator can raise along with the increase of load, has a strong impact on the problem of electric appliance load safety.
In order to solve the problems of the technologies described above, the technical solution of the utility model is:
A kind of voltage stabilizing circuit of brushless generator, comprise magnetizing inductance, exciting capacity, also comprise output rectification circuit, regulating circuit, switching tube, sample circuit, feedback circuit, jointly be connected in the excitation winding of generator with magnetizing inductance after exciting capacity serial connection output rectification circuit, the both positive and negative polarity of the positive-negative output end difference connecting valve pipe of output rectification circuit; The output voltage of sampling circuit samples generator feeds back to the control end of switching tube by feedback circuit; Regulating circuit is connected in parallel between output rectification circuit and switching tube.
When load increases, the output voltage of generator increases, the sampled voltage of sample circuit also raises, switching tube receives the sampled voltage of rising, in conducting, resistive is large, and output current reduces thereupon, thus the charging current of regulating circuit is less, both end voltage reduces, and reaches the object of regulator generator output voltage with this.
Further, described sample circuit comprise independent of excitation winding sampling winding and sampling rectification circuit, sampling winding sampling generator output voltage, sampling rectification circuit rectification is carried out to sampled voltage.
Further, described feedback circuit is made up of the 3rd resistance, the 4th resistance, transistor and the second resistance, three, the 4th resistant series, 3rd resistance connects the forward output of sampling rectification circuit, 4th resistance connects the negative sense output of sampling rectification circuit, and transistor base stage is connected between the 3rd resistance and the 4th resistance, and emitter is connected with the 4th resistance, collector electrode connects the second resistance, and the second resistance is connected across the control end of switching tube.
Further, described switching tube is technotron, and the grid of field effect transistor is connected with the collector electrode of transistor, and the second resistance is connected across between grid and source electrode, drain electrode connects the forward output of output rectification circuit, and source electrode connects the negative sense output of output rectification circuit.
Further, described regulating circuit comprises pressure regulation electric capacity and bleeder resistance, and pressure regulation electric capacity and bleeder resistance are all connected in parallel between output rectification circuit and switching tube.
Further, filter capacitor is connect between sample circuit and feedback resistance.
The output voltage of the utility model to generator is sampled, the output voltage stabilizing of stable generator is carried out by feedback circuit, control circuit, regulating circuit, when the fluctuation of load, sampled voltage also fluctuates thereupon in the same way, control circuit exports the current signal of oppositely fluctuation according to sampled voltage, thus realizes the function of stable generator output voltage.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model specific embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of voltage stabilizing circuit of brushless generator, as shown in Figure 1, comprise magnetizing inductance L1, exciting capacity C1, also comprise output rectification circuit, regulating circuit, switching tube Q1, sample circuit, feedback circuit, exciting capacity C1 is connected in the excitation winding of generator jointly with magnetizing inductance L1 after being connected in series output rectification circuit, the both positive and negative polarity of the positive-negative output end difference connecting valve pipe Q1 of output rectification circuit; The output voltage of sampling circuit samples generator feeds back to the control end of switching tube Q1 by feedback circuit; Regulating circuit is connected in parallel between output rectification circuit and switching tube Q1.
Further, described sample circuit comprise independent of excitation winding sampling winding and sampling rectification circuit, sampling winding sampling generator output voltage, sampling rectification circuit rectification is carried out to sampled voltage.
Further, described feedback circuit is made up of the 3rd resistance R3, the 4th resistance R4, transistor Q2 and the second resistance R2, three, the 4th resistant series, 3rd resistance R3 connects the forward output of sampling rectification circuit, 4th resistance R4 connects the negative sense output of sampling rectification circuit, transistor Q2 base stage b is connected between the 3rd resistance R3 and the 4th resistance R4, emitter e is connected with the 4th resistance R4, collector electrode c connects the second resistance R2, and the second resistance R2 is connected across the control end of switching tube Q1.
Further, described switching tube Q1 is technotron, the grid G of field effect transistor is connected with the collector electrode c of transistor, second resistance R2 is connected across between grid G and source S, drain D connects the forward output of output rectification circuit, and source S connects the negative sense output of output rectification circuit.
Further, described regulating circuit comprises pressure regulation electric capacity C2 and bleeder resistance R1, and pressure regulation electric capacity C2 and bleeder resistance R1 is all connected in parallel between output rectification circuit and switching tube Q1.
Further, filter capacitor C3 is met between sample circuit and feedback resistance.
Sampled voltage after over commutation is through the dividing potential drop of the 3rd resistance R3 and the 4th resistance R4, and resistance R4 both end voltage provides conducting voltage U for transistor
be, now collector current i
cdepend on base current i completely
b; Sampled voltage is larger, and series branch's electric current of the 3rd resistance R3 and the 4th resistance R4 is larger, the base current i of transistor
balso larger, therefore collector current i
calso larger, and then the second resistance R2 both end voltage is larger, i.e. the reverse voltage U that bears of switching tube Q1 control end
gSlarger, according to the output characteristic curve of technotron, U
gSlarger, the drain current i of output
dless, thus make the charging current of pressure regulation electric capacity C2 less, both end voltage is less, thus reaches the object of regulator generator output voltage.
The above, be only specific embodiment of the utility model, but protection range of the present utility model is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection range of the present utility model.Therefore, the protection range that protection range of the present utility model should limit with claims is as the criterion.
Claims (6)
1. the voltage stabilizing circuit of a brushless generator, comprise magnetizing inductance, exciting capacity, it is characterized in that: also comprise output rectification circuit, regulating circuit, switching tube, sample circuit, feedback circuit, jointly be connected in the excitation winding of generator with magnetizing inductance after exciting capacity serial connection output rectification circuit, the both positive and negative polarity of the positive-negative output end difference connecting valve pipe of output rectification circuit; The output voltage of sampling circuit samples generator feeds back to the control end of switching tube by feedback circuit; Regulating circuit is connected in parallel between output rectification circuit and switching tube.
2. the voltage stabilizing circuit of brushless generator according to claim 1, it is characterized in that: described sample circuit comprise independent of excitation winding sampling winding and sampling rectification circuit, the output voltage of sampling winding sampling generator, sampling rectification circuit carries out rectification to sampled voltage.
3. the voltage stabilizing circuit of brushless generator according to claim 2, it is characterized in that: described feedback circuit is made up of the 3rd resistance, the 4th resistance, transistor and the second resistance, three, the 4th resistant series, 3rd resistance connects the forward output of sampling rectification circuit, 4th resistance connects the negative sense output of sampling rectification circuit, transistor base stage is connected between the 3rd resistance and the 4th resistance, emitter is connected with the 4th resistance, collector electrode connects the second resistance, and the second resistance is connected across the control end of switching tube.
4. the voltage stabilizing circuit of brushless generator according to claim 3, it is characterized in that: described switching tube is technotron, the grid of field effect transistor is connected with the collector electrode of transistor, second resistance is connected across between grid and source electrode, drain electrode connects the forward output of output rectification circuit, and source electrode connects the negative sense output of output rectification circuit.
5., according to the voltage stabilizing circuit of the arbitrary described brushless generator of claim 1-4, it is characterized in that: described regulating circuit comprises pressure regulation electric capacity and bleeder resistance, pressure regulation electric capacity and bleeder resistance are all connected in parallel between output rectification circuit and switching tube.
6. the voltage stabilizing circuit of brushless generator according to claim 5, is characterized in that: connect filter capacitor between sample circuit and feedback resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520938279.8U CN205160420U (en) | 2015-11-20 | 2015-11-20 | Voltage stabilizing circuit of brushless generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520938279.8U CN205160420U (en) | 2015-11-20 | 2015-11-20 | Voltage stabilizing circuit of brushless generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205160420U true CN205160420U (en) | 2016-04-13 |
Family
ID=55696063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520938279.8U Expired - Fee Related CN205160420U (en) | 2015-11-20 | 2015-11-20 | Voltage stabilizing circuit of brushless generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205160420U (en) |
-
2015
- 2015-11-20 CN CN201520938279.8U patent/CN205160420U/en not_active Expired - Fee Related
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20161120 |