SU608142A1 - Dc stabilizer - Google Patents

Description

I

: The invention relates to electrical engineering.

and - intended for use as a secondary power source of various devices, in particular, for power supply, low-noise amplifiers of the microwave range.

A constant current stabilizer is known, which contains a regulating transistor, a current transducer and an output voltage divider.

The closest to the technical invention invented is a voltage regulator containing, a regulating transistor, a collector and an emitter which are connected respectively megqda one of the input and output outputs, and the base is connected to the output of the comparing node, one of the inputs of the connected with an adjustable reference-sprnsen source, and a current sensor connected between other inputs and output pins.

The shortage of known stabilizers (14) is, 14), that with non-monotonic characteristic of the load, it is necessary to manually adjust the current stabilizer from

due to the direct connection of the current sensor and the load to the mehsdu, therefore, the stabilizer has poor electrical characteristics.

The purpose of the invention is to improve the electrical characteristics of the stabilizer when operating on a load with a non-monotonic characteristic.

Claims (1)

This is achieved by the fact that in a constant current regulator containing a regulating transistor, the collector and ekgatter of which are connected respectively between one of the input and output pins, and the base is connected to the output of the matching node, one of the inputs connected to the adjustable reference voltage source, and a sensor current, on Eny between other input and output pins, the new one is that the stabilizer is equipped with an additional transistor, the base-emitter junction of which the /.connect switch parallel to the current sensor collector connected to another input of the node node and through an additional secondary auxiliary current node - to the svtHTTepoM control transistor. The functional scheme of the stabilizer. The current is shown in the drawing. The direct current stabilizer contains a regulating transistor 1, the emitter of which is connected to a series-connected load 2 and a current sensor 3, and the base is connected to a positive node 4, One of the inputs of the comparing node 4 is connected to a regulated source the reference voltage 5, and the other input, with the collector 6 collector and the auxiliary stabilizing current node 7. The stabilized (constant current) current works in the following manner. When a current flowing through the load circuit 2 is flowing over the current sensor .3, a voltage is formed, specifically the mode of operation of the transistor 6, and the signals of the Bejiit type 5 are not received at the inputs of the opposite node 4. and from the output of the node 4 to the base of the regulating transistor 1, a signal is received that determines the magnitude of the current specified in the load circuit 2 — the device is located in the pump-on-line equilibrium. With a change of magnitude, the current values are in the target value. change inversely proportional from 5g to n by gn; A mismatch signal is sent from the node 4 to the base of the regulating transistor 1 on the collector 3g, a1tvrnom ne 1 e of the transistor 6. The maximum value of the drop in nanr: keni on its collector, while the tern-to-ktr – kpk – rpyaKJi transition circuit tends to the initial set value, dang., its device eliminates the automatic setting of the specified current rhigm of load 2 with non-monotonic arrays. sheh; characteristic with a DC stabilizer. In this stabilizer works. As follows. With an increase in the current in the circuit of a series-connected load 2 and current sensor 3 above a predetermined nominal value, the transistor 6 nolpostyo opens; at this point, a further increase in the current in its base circuit does not cause a change in the sipnal at the input of the node 4, which is determined by the voltage drop on the collector-ekshtternnom transition from the .open transistor-6, the current through the crankshaft which is set by the auxiliary cTa6HnnaHp} TomHM node TO1Ш 7,;. With a further increase in the voltage of the current in the circuit. The load drops in accordance with its characteristics and the device automatically sets the normal mode of current stabilization. This stabilizer of direct current provides a comparison with the known ones; the ability to automatically set the specified value of the current in the load circuit with a non-monotonous and varying characteristic. This new quality makes it possible to shorten the preparation time of the device for operation, to simplify the work of the operator, to use a current stabilizer for working in unattended rooms. Claims The stabilizer is mounted a current containing a control transistor, collector 11 emitter KOTOpoix) are connected respectively to one of the input and output pins, and the base is connected to the output of a matching node, one of the inputs connected to the source of the reference reference voltage, and the current sensor It is very different between the other input and output terminals, and that, in order to improve the electrical characteristics of the stabilizer when operating on a load with a non-negligible characteristic, the stabilizer is provided with itelnym transistor ba-emitter junction of which is connected parallel to the current sensor and whose collector soe- Yaynen to another input of the comparator through node E additionally vvedensh rk auxiliary stabilizing uzlegtoka - with e ushtterom regulating transistor. Sources of information, adopted in ti-eike at examination; 1.Patent of France No. 22S1O49, cl. SfOS F 1/58, 1972, 2, US Patent; No. 3370222 Cl, Q23--4, 197О