SU1238203A1 - Generator of reference indication voltage - Google Patents

Abstract

The invention relates to and shyl Noy technique. It can be used to energize gas-discharge indicators. The purpose of the invention is ureliche L ". the amplitude of the output voltage pulses and the spreading of the functionality, is achieved by applying a rational switch on the up. equal charge accumulator. For this, a second capacitor 18 and a diode 19 are additionally introduced into the generator. The generator also contains transistors 1, 2, 5 and 6 power supply 3, common bus 4, output terminal 7, capacitor 8, diodes 9-13, of which are shunt, input terminals 14 -17. Elements 18 and 19 act as a controlled charge accumulator, which allows a 1.5-fold increase in the amplitude of the output pulses. 2 Il. (L 15 i; "

Description

The invention relates to a pulsed technique and can be used to energize gas discharge indicators.

The purpose of the invention is to increase the amplitude of the output voltage pulses and to expand the functionality by introducing and rationally switching on a controlled accumulator charge.

FIG. 1 is a schematic electrical diagram of the device; FIG. 2 - the shape of the output pulses of the device.

The reference voltage generator contains the first 1 and second 2 transistors, the collector of transistor 1 is connected to the output of a constant voltage source 3, the emitter of transistor 2 is connected to a common bus 4. The emitter of the third transistor 5 is connected to a collector of the fourth transistor bis output

7 devices. The emitter of transistor 1 is connected to the collector of transistor 2 and to the first output of the first capacitor 8, the second output of which is connected to the emitter of the transistor by the bis anode of the first diode 9. The device contains four shunt diodes 10 11, 12 and 13, the base of each of the transistors 1,2, 5 and 6 is connected with the corresponding inputs 14, 15, 16 and

17 devices, the collector - with the cathode of the corresponding shunt of its diode, the emitter - with the anode of the corresponding shunt diode. A second capacitor 18 and a second diode 19 are introduced into the device, the anode of diode 19 is connected to the output of source 3, and the cathode ft is connected to the collector of transistor 5 and the first terminal of capacitor 18, the second terminal of which is connected to the emitter of transistor 1, the cathode of diode 9 is connected to common bus 4 .

The device works as follows.

The input pulses of positive polarity arrive in the base circuit of transistors in a certain sequence (Fig. 2): at times t and t ,, - into the base circuit of transistor 1 at times tj and ty - the base circuit of transistor 5, at times t and t - in base circuit transistors 2 and 6.

If transistor 1 is open, then capacitor 8 is charged to the voltage E of source 3 via a circuit with diode 9.

8 other lengths of condensation

j 0

five

0

five

0

five

the torus 18 is charged to the voltage E, through the diode 19 and the open transistor 2.

Up to the moment t, the first terminal of the capacitor 8 is connected via an open transistor 6 with the output 7 of the device, therefore the output voltage of the generator is - E (Fig. 2),

At time t. the transistor 2 is closed, and the transistor 1 is turned off, the voltage across the emitter of the transistor 1 increases by the value E ,, and the output voltage of the device rises to zero.

At time tj, the transistor 3 is opened and the total voltage from source 3 and capacitor 18 equal to 2E is fed to output 7 of the device.

At time tj, transistors 1 and 5 are closed, and transistors 2 and 6 are unlocked, and the output voltage drops sharply from + 2E to a negative -E ,. As a result, the output 7 of the device (Fig. 1) produces a voltage drop equal to three times the value of the voltage E (Fig. 2).

The shape of the output voltage pulse is easy to control by applying, for example, to the input 13 of transistor 2 at time t (Fig. 2) a positive pulse.

Thus, due to the introduction and rational switching on of capacitor 18 and diode 19, acting as a controlled charge accumulator, an increase (by a factor of 1.3) in the amplitude of the output voltage pulses and an increase in the functionality of the device is achieved.

Claims (1)

Invention Formula An indication reference voltage generator containing the first and second transistors, the collector of the first transistor is connected to the output of a constant voltage source, the emitter of the second transistor is connected to the common bus, the third and fourth transistors, the emitter of the third transistor is connected to the collector of the fourth transistor and to the output of the device , the first capacitor and the first diode, the emitter of the first transistor is connected to the collector of the second transistor and to the first pin of the first capacitor, the second output of which is connected to the emitter Ohm fourth transistor and the anode of the first diode, four shunt diode, the base of each transistor is connected to the corresponding input of the device, the collector with the cathode of the corresponding shunt diode, the emitter - with the anode of the corresponding shunt diode, in order to increase the amplitude of the output voltage shots and expand the functionality, it has a second capacitor and a second diode, the anode of the second diode is connected to the output of a constant voltage source, and the cathode is connected to the collector of the third transistor and the first output of the second capacitor, the second output of which is connected to the emitter of the first transistor by bus. 7t Compiled by A. Sidorov Editor L. Povhan Tehred M.Hodanich Proofreader M. Maksimishinets Order 3302/56 Circulation 816 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4