CN104317342A - Series-connection feedback amplifying type voltage stabilizing source - Google Patents
Series-connection feedback amplifying type voltage stabilizing source Download PDFInfo
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- CN104317342A CN104317342A CN201410580342.5A CN201410580342A CN104317342A CN 104317342 A CN104317342 A CN 104317342A CN 201410580342 A CN201410580342 A CN 201410580342A CN 104317342 A CN104317342 A CN 104317342A
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- triode
- resistance
- voltage stabilizing
- voltage
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Abstract
The invention discloses a series-connection feedback amplifying type voltage stabilizing source which comprises a first triode T1, a second triode T2, a first resistor R1, a second resistor R2 and a voltage stabilizing tube D1, a base electrode of the first triode T1 is connected with a collector electrode of the second triode T2, one end of the first resistor R1 is connected with a collector electrode of the first triode T1 while the other end of the same is connected between the base electrode of the first triode T1 and the collector electrode of the second triode T2, an anode of the voltage stabilizing tube is connected with a base electrode of the second triode while a cathode of the same is connected with an emitter electrode of the first triode, one end of the second resistor is connected on a circuit between the base electrode of the second triode and the anode of the voltage stabilizing tube while the other end of the same is grounded, and an emitter electrode of the second triode is grounded. The series-connection feedback amplifying type voltage stabilizing source is provided to overcome the defects of a series-connection feedback adjusting type voltage stabilizing source, and sensitivity of a circuit and stability of output voltage are improved.
Description
Technical field
the present invention relates to electrical equipment, especially relate to serial Feedback scale-up version source of stable pressure.
Background technology
Serial Feedback adjusting type source of stable pressure is a kind of power supply of widespread use, but under strong magnetic field circumstance, be vulnerable to the interference of electromagnetism, arc discharge, and the stability of sensitivity and output voltage is all not ideal enough.Thus the stability that accelerator system is run is had a strong impact on.
Summary of the invention
The object of the invention is the deficiency overcoming serial Feedback adjusting type source of stable pressure, serial Feedback scale-up version source of stable pressure is provided, improve the sensitivity of circuit and the stability of output voltage.
Object of the present invention is achieved through the following technical solutions: serial Feedback scale-up version source of stable pressure, comprise the first triode, the second triode, the first resistance, the second resistance and stabilivolt, the base stage of described first triode is connected with the collector of described second triode, described first resistance one end is connected to the collector of the first triode, and its other end is connected on the circuit between the base stage of the first triode and the collector of the second triode; The positive pole of described stabilivolt is connected with the base stage of the second triode, its negative pole is connected with the emitter of the first triode, described second resistance one end is connected on the circuit between the base stage of the second triode and stabilivolt positive pole, its other end ground connection, the grounded emitter of described second triode.In the present invention, the first triode is used as Correctional tube and forms emitter-base bandgap grading output, is also the biasing resistance of the first triode while that the first resistance being the collector resistance of the second triode.The combination of stabilivolt and the second resistance is reference voltage circuit, is also sample circuit.The signal that second triode is fetched from sample circuit and reference voltage compare, and its result is sent in amplifier, regulates collection emitter voltage, thus make output voltage stabilization numerically predetermined with this.
Further, described first triode and the second triode are NPN triode.
For ensureing that Correctional tube is operated in linear amplification region reliably, further, described first triode is FDH100J.
For ensureing the load current that Correctional tube is maximum, improve the sensitivity of circuit and the stability of output voltage, further, described first resistance R
1resistance be 3.2 kilo-ohms.
Compared with existing control executive circuit, the present invention has following beneficial effect: in serial Feedback scale-up version source of stable pressure, the signal that second triode is fetched from sample circuit and reference voltage compare, its result is sent in the second triode, collection emitter voltage is regulated with this, thus output voltage is remained unchanged, be stabilized in numerically predetermined.Meanwhile, the present invention uses less components and parts to improve the stability of output voltage, is not only beneficial to the reliability improving field control, and with low cost.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of serial Feedback scale-up version source of stable pressure of the present invention.
Name in accompanying drawing corresponding to Reference numeral is called: 1, supply voltage forward input line, 2, supply voltage negative sense input line, 3, voltage forward output line after regulating, 4, after regulating, voltage negative is to output line, TI, the first triode, T2, the second triode, D1, stabilivolt, R1, the first resistance, R2, the second resistance, Ro, pull-up resistor.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
As shown in Figure 1, serial Feedback scale-up version source of stable pressure, comprise the first triode T1, the second triode T2, the first resistance R1, the second resistance R2 and stabilivolt D1, the base stage of described first triode T1 is connected with the collector of described second triode T2, described first resistance R1 one end is connected to the collector of the first triode T1, and its other end is connected on the circuit between the base stage of the first triode T1 and the collector of the second triode T2.The positive pole of stabilivolt D1 is connected with the base stage of the second triode T2, its negative pole is connected with the emitter of the first triode T1, second resistance R2 one end is connected on the circuit between the base stage of the second triode T2 and stabilivolt D1 positive pole, its other end ground connection, the grounded emitter of the second triode T2.In the present invention, the collector of the first triode T1 is connected to supply voltage forward input line 1, the emitter of the second triode T2 is connected to supply voltage negative sense input line 2, after the two ends of pull-up resistor are connected to and regulate rear voltage forward output line 3 and regulate, voltage negative is to output line 4, and supply voltage negative sense input line 2 and the rear voltage negative of adjustment are to output line 4 all ground connection.Input voltage between supply voltage forward input line 1 and supply voltage negative sense input line 2 is Ui, and after regulating, voltage forward output line 3 and the rear voltage negative of adjustment are Uo to the output voltage between output line 4, are also the magnitude of voltage of pull-up resistor Ro.When the present invention applies, work as U
iwhen reduction or load current increase, U
oreduce, because the benchmark pressure drop of stabilivolt D1 is constant, so the second resistance R2 pressure drop reduces, the second triode T2 base radio drops, and base current reduces, collector current is reduced, the voltage drop at the first resistance R1 two ends, the base radio pressure drop of the first triode T1 increases, and so base current will increase, collection is penetrated pressure drop and is reduced, U
owill rise and return to original numerical value.When load current reduces, U
oraise, and negative feedback is through adjusting by Control of Voltage in former predetermined value, thus output voltage is remained unchanged.
Embodiment 2
The present embodiment has made following restriction further on the basis of embodiment 1: described first triode T1 is FDH100J.For determining that the first triode T1 is operated in linear amplification region, just must ensure tube voltage drop, if tube voltage drop is excessive, although the range of adjustment of voltage can be increased, the withstand voltage and power consumption of the first triode T1 can be increased.If minimizing tube voltage drop; Although can reduce withstand voltage and power consumption, the first triode T1 easily enters non-linear saturation area, thus loses regulable control ability.For making the first triode T1 be operated in linear amplification region reliably, according to the voltage U of test figure first triode T1
iget 11V, due to the fluctuation of alternating voltage, U
ito fluctuate to some extent, i.e. U
i minfor 10.45V, U
i maxfor 45.2V, output terminal maximum current I
omfor 4A, Circuit tuning and bias current in addition, filter output electric current should be greater than 4A, gets I
t1for 4100mA.The P of Correctional tube FDH100J
cm=150W; I
cm=10A; β
1=1000, meet the requirements.
Embodiment 3
The present embodiment has made following restriction further on the basis of embodiment 1: the resistance of described first resistance R1 is 3.2 kilo-ohms.For comparison amplifier, circuit sampled signal and reference voltage compare, and control the output voltage of the first triode T1 after the difference voltage of the two being amplified.For improving the sensitivity of circuit and the stability of output voltage, the power tube that amplification coefficient is larger selected by negative-feedback circuit, determines the first resistance R1 according to the first triode T1 base current.
Above content is the further description done the present invention in conjunction with concrete preferred implementation, can not assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, not departing from other embodiments drawn under technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (4)
1. serial Feedback scale-up version source of stable pressure, it is characterized in that: comprise the first triode (T1), the second triode (T2), the first resistance (R1), the second resistance (R2) and stabilivolt (D1), the base stage of described first triode (T1) is connected with the collector of described second triode (T2), described first resistance (R1) one end is connected to the collector of the first triode (T1), and its other end is connected on the circuit between the base stage of the first triode (T1) and the collector of the second triode (T2); The positive pole of described stabilivolt (D1) is connected with the base stage of the second triode (T2), its negative pole is connected with the emitter of the first triode (T1), described second resistance (R2) one end is connected on the circuit between the base stage of the second triode (T2) and stabilivolt (D1) positive pole, its other end ground connection, the grounded emitter of described second triode (T2).
2. serial Feedback scale-up version source of stable pressure according to claim 1, is characterized in that: described first triode (T1) and the second triode (T2) are NPN triode.
3. serial Feedback scale-up version source of stable pressure according to claim 1, is characterized in that: described first triode (T1) is FDH100J.
4. serial Feedback scale-up version source of stable pressure according to claim 1, is characterized in that: the resistance of described first resistance (R1) is 3.2 kilo-ohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580342.5A CN104317342A (en) | 2014-10-27 | 2014-10-27 | Series-connection feedback amplifying type voltage stabilizing source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580342.5A CN104317342A (en) | 2014-10-27 | 2014-10-27 | Series-connection feedback amplifying type voltage stabilizing source |
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| Publication Number | Publication Date |
|---|---|
| CN104317342A true CN104317342A (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410580342.5A Pending CN104317342A (en) | 2014-10-27 | 2014-10-27 | Series-connection feedback amplifying type voltage stabilizing source |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176309A (en) * | 1977-04-14 | 1979-11-27 | Robert Bosch Gmbh | Stabilized voltage regulator circuit, particularly for use with a serially connected PNP transistor |
| US20060097709A1 (en) * | 2004-11-06 | 2006-05-11 | Hon Hai Precision Industry Co., Ltd. | Linear voltage regulator |
| CN1779590A (en) * | 2004-11-18 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | Linear stabilized DC power supply of host board |
| CN201374018Y (en) * | 2009-03-24 | 2009-12-30 | 福建顺昌虹润精密仪器有限公司 | Linear stabilized voltage power supply |
| CN203366176U (en) * | 2013-06-14 | 2013-12-25 | 衡阳风顺车桥有限公司 | Series-connection direct-current voltage stabilizing circuit with amplifier |
-
2014
- 2014-10-27 CN CN201410580342.5A patent/CN104317342A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176309A (en) * | 1977-04-14 | 1979-11-27 | Robert Bosch Gmbh | Stabilized voltage regulator circuit, particularly for use with a serially connected PNP transistor |
| US20060097709A1 (en) * | 2004-11-06 | 2006-05-11 | Hon Hai Precision Industry Co., Ltd. | Linear voltage regulator |
| CN1779590A (en) * | 2004-11-18 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | Linear stabilized DC power supply of host board |
| CN201374018Y (en) * | 2009-03-24 | 2009-12-30 | 福建顺昌虹润精密仪器有限公司 | Linear stabilized voltage power supply |
| CN203366176U (en) * | 2013-06-14 | 2013-12-25 | 衡阳风顺车桥有限公司 | Series-connection direct-current voltage stabilizing circuit with amplifier |
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Application publication date: 20150128 |