The voltage regulation type amplifier power supply
Technical field
The utility model relates to a kind of power supply, specifically, relates to a kind of voltage regulation type amplifier power supply.
Background technology
Amplifier power supply is the indispensable devices of most of electric equipments, in order to make each electric equipment can normally move the stability that need to guarantee as much as possible Power supply, thereby need to use a lot of anti-interference equipments, can cause like this power volume larger, cost is higher, is unfavorable for some mini-plant uses cheaply.
The utility model content
The purpose of this utility model is to provide a kind of voltage regulation type amplifier power supply, mainly solves the high accuracy anti-jamming power-supply complex structure that exists in prior art, the problem that cost is higher.
To achieve these goals, the technical solution adopted in the utility model is as follows:
the voltage regulation type amplifier power supply, comprise triode Q1, the triode Q2 that collector electrode is connected with the base stage of triode Q1, be connected in the resistance R 2 between the emitter of the emitter of triode Q1 and triode Q2, be connected in the resistance R 1 between the collector electrode of the collector electrode of triode Q1 and triode Q2, the slide rheostat R4 that sliding end is connected with the base stage of triode Q2, one end is connected in one of them stiff end of slide rheostat R4, the other end is connected in the resistance R 3 of the emitter of triode Q1, one end is connected in another stiff end of slide rheostat R4, the other end is connected in the resistance R 5 of the emitter of triode Q2, be connected in the resistance R 6 between the emitter of the emitter of triode Q1 and triode Q2, the detecting circuit that is connected with resistance R 6, the low-pass filter circuit that is connected with detecting circuit, the amplifying circuit that is connected with low-pass filter circuit.
Specifically, described detecting circuit comprises that output passes through the operational amplifier T1 that diode D2 is connected with an end of resistance R 6, inverting input is connected with the other end of resistance R 6 by resistance R 7, be connected in the output of operational amplifier T1 and the diode D1 between inverting input, the in-phase input end ground connection of described operational amplifier T1, described low-pass filter circuit is connected with the inverting input of operational amplifier T1.
specifically, described low-pass filter circuit comprises the resistance R 9 that inverting input passes through to be connected successively, the operational amplifier T2 that resistance R 8 is connected with the inverting input of operational amplifier T1, the resistance R 11 of inverting input by being connected successively, the operational amplifier T3 that resistance R 10 is connected with the output of operational amplifier T2, one end is connected between resistance R 8 and resistance R 9, the other end is connected in the capacitor C 1 of the output of operational amplifier T2, one end is connected between resistance R 10 and resistance R 11, the other end is connected in the capacitor C 2 of the output of operational amplifier T3, the inverting input of described operational amplifier T2 and operational amplifier T3 is connected with respectively a ground capacity, and in-phase input end both all is connected with output, described amplifying circuit is connected with the output of operational amplifier T3.
Further, described amplifying circuit comprises the triode Q3 that base stage is connected with the output of operational amplifier T3, the operational amplifier T4 that in-phase input end is connected with the emitter of triode Q3 by electrochemical capacitor C4, be connected in inverting input and the capacitor C between output 3 of operational amplifier T4, be parallel to capacitor C 5 and the resistance R 16 at capacitor C 3 two ends after series connection.
Further, described amplifying circuit also comprises base stage and the resistance R between ground 12 that is connected in triode Q3, be connected in emitter and the resistance R between ground 13 of triode Q3, be connected in in-phase input end and the resistance R between ground 14 of operational amplifier T4, be connected in reverse input end and the resistance R between ground 15 of operational amplifier T4.
Compared with prior art, the utlity model has following beneficial effect:
(1) the utility model is integrated low-pass filter circuit, power circuit, detecting circuit, Design of Amplification Circuit, and according to actual conditions, has selected the components and parts that cost is minimum, effect is best to carry out circuit design, accords with the demands of the market.
(2) adopt dual low-pass filter circuit in the utility model, greatly improved the antijamming capability of power circuit, improved the stability of supply voltage.
(3) the utility model is simple in structure, uses less components and parts to realize anti-interference function, and with low cost, volume is small and exquisite, is fit to large-scale promotion application.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, and execution mode of the present utility model includes but not limited to the following example.
Embodiment
as shown in Figure 1, the utility model discloses a kind of voltage regulation type amplifier power supply, comprise triode Q1, the triode Q2 that collector electrode is connected with the base stage of triode Q1, be connected in the resistance R 2 between the emitter of the emitter of triode Q1 and triode Q2, be connected in the resistance R 1 between the collector electrode of the collector electrode of triode Q1 and triode Q2, the slide rheostat R4 that sliding end is connected with the base stage of triode Q2, one end is connected in one of them stiff end of slide rheostat R4, the other end is connected in the resistance R 3 of the emitter of triode Q1, one end is connected in another stiff end of slide rheostat R4, the other end is connected in the resistance R 5 of the emitter of triode Q2, be connected in the resistance R 6 between the emitter of the emitter of triode Q1 and triode Q2, the detecting circuit that is connected with resistance R 6, the low-pass filter circuit that is connected with detecting circuit, the amplifying circuit that is connected with low-pass filter circuit.
Specifically, described detecting circuit comprises that output passes through the operational amplifier T1 that diode D2 is connected with an end of resistance R 6, inverting input is connected with the other end of resistance R 6 by resistance R 7, be connected in the output of operational amplifier T1 and the diode D1 between inverting input, the in-phase input end ground connection of described operational amplifier T1, described low-pass filter circuit is connected with the inverting input of operational amplifier T1.
specifically, described low-pass filter circuit comprises the resistance R 9 that inverting input passes through to be connected successively, the operational amplifier T2 that resistance R 8 is connected with the inverting input of operational amplifier T1, the resistance R 11 of inverting input by being connected successively, the operational amplifier T3 that resistance R 10 is connected with the output of operational amplifier T2, one end is connected between resistance R 8 and resistance R 9, the other end is connected in the capacitor C 1 of the output of operational amplifier T2, one end is connected between resistance R 10 and resistance R 11, the other end is connected in the capacitor C 2 of the output of operational amplifier T3, the inverting input of described operational amplifier T2 and operational amplifier T3 is connected with respectively a ground capacity, and in-phase input end both all is connected with output, described amplifying circuit is connected with the output of operational amplifier T3.
Further, described amplifying circuit comprises the triode Q3 that base stage is connected with the output of operational amplifier T3, the operational amplifier T4 that in-phase input end is connected with the emitter of triode Q3 by electrochemical capacitor C4, be connected in inverting input and the capacitor C between output 3 of operational amplifier T4, be parallel to capacitor C 5 and the resistance R 16 at capacitor C 3 two ends after series connection.
Further, described amplifying circuit also comprises base stage and the resistance R between ground 12 that is connected in triode Q3, be connected in emitter and the resistance R between ground 13 of triode Q3, be connected in in-phase input end and the resistance R between ground 14 of operational amplifier T4, be connected in reverse input end and the resistance R between ground 15 of operational amplifier T4.
On the basis of foregoing circuit, the present embodiment also is connected with part auxiliary element and line, is used for guaranteeing the normal operation of circuit, and the use of these auxiliary elements and line belongs to the circuit application custom of industry universal, does not repeat them here.
, according to above-described embodiment, just can realize well the utility model.