SU1358074A1 - Variable square pulse shaper - Google Patents

Abstract

The invention may be used in instrumentation circuits for generating stimulating effects. The purpose of the invention is to increase the reliability of work. The goal is achieved by simplifying the electrical isolation of the load circuits and control by the proposed circuit performance. The controlled rectangular pulse driver contains a master oscillator 1, a code sample block 2, zener diodes 3 and 4, a resistor 5, power sources 6 and 7, output buses 8 and 9, optocouplers 10 and 11, keys 12 and 13, strip 14 and 15 meals. In the generator, alternating excitation of photoreceivers of optocouplers 10 and 115 is carried out, which ensures the formation of two-pole pulses on the output buses. The modes of operation of the devices are given in the table provided in the description of the invention. 1 silt, 1 tab. 00 el 00

Description

The invention relates to a pulse technique and can be used in instrumentation circuits for generating stimulating effects.

The purpose of the invention is to increase the reliability of operation by simplifying the electrical isolation of the load and control circuits.

The drawing shows an electrical, schematic diagram of a controlled shaper of rectangular pulses.

The controlled rectangular pulse driver contains the generator 1, the code set block 2, the first 3 and second 4 zener diodes, the first resistor 5, the first 6 and second 7 power supplies, and the first 8 and output buses, the first output

ruyu 9

iifHHa 8 is connected to the negative pole of the first power supply 6 and the positive pole of the second IC-i. power supply point 7, first 10 and second 1 1 optocouplers, and block 2 of the code set is made in the form of the first 12 and second 13 keys, the inputs of which are connected respectively to the positive 14 and negative 15 power buses of the master oscillator 1, the output of which is connected through the first resistor 5 with the anode of the first Zener diode 3 and the cathode of the second Zener diode 4, the cathode of the first Zener diode 3 through the light emitter of the first optocoupler 10 is connected to the output of the first key 12 of the code set block 2, the anode of the second zener diode 4 is connected through the light emitter of the second optocoupler 11 to the output of the second key 13 of block 2 of the code set, and the second output bus 9 through the photoreceivers of the first 10 and second 11 optocouplers are connected respectively to the positive pole of the first power source 6 and the negative pole of the second power source 7.

The proposed shaper works as follows.

The absence of a signal on the output tires 8 and 9 is provided by the dark (high-resistance) state of the photodetectors of the optocouplers 10 and 11. A periodic transition of the photodetector of the optocoupler 10 to the excited (low-impedance) state forms at the output tires 8 and 9 relative to its first output pulses of positive polarity. Periodic transition of the photoprime of the optocoupler 11 in the excited (low

80742

This condition generates negative polarity pulses on the output buses 8 and 9 due to the counter-switching of the power supply sources 6 and 7. The alternating excitation of the photodetectors of optocouplers 10 and 11 ensures the formation of two-pole pulses on the output buses 8 and 9.

The two-digit code dialing unit 2 sets the four modes of operation of the device indicated in the table.

ten

The setting of the modes (table) is provided by interrupting (closing) the current flow circuits in the light emitter x optocouplers 10 and 11.

The stabilization voltage of the zener diodes 10 and 11 is chosen from the conditions

and.

 and.

P

where and

and.

- voltage stabilization of zener diodes;

- generator power supply,

and prevents the simultaneous excitation of the light emitters of the optocouplers and 11.

ten

Claims (1)

Invention Formula five 0 0 A controlled driver of a direct-current pulse containing a master oscillator, a code dialing unit, the first and second zener diodes, the first resistor, the first and second power sources and the first and second output buses, the first output bus connected to the negative pole of the first and positive second power sources, characterized in that, in order to increase the reliability of operation by simplifying the electrical isolation of the load and control circuits, the first and second optocouplers are inserted into it, and the code set block is executed as The primary and second switches, the inputs of which are connected respectively to the positive and negative power supply buses of the master oscillator, the output of which is connected via the first resistor through the first anode of the zener diode and the cathode of the second zener diode, are connected via the light emitter of the first optocoupler, anode second5 313580744 A Zener diode is connected via the pylons of the first and second optocoupler sub-emitter of the second optocoupler to an external switch, respectively, to the positive key of the second key of the code set block, to the new pole of the first and to the negative second pin. tire through the photoreceiver-pole of the second power sources. The state of the keys of the block 2 code set First (3) Open 1 Closed Compiled by V. Chizhikov Editor I. Shulla Tehred M. Dvdyk 6007/55 Circulation 900 Subscription VNIIPI USSR State Committee for inventions and from $ 1 ryty 113035, Moscow, Zh-35, Raushsk nab., d.4 / 5 Production and printing company, Uzhgorod, ulitsa Yekrozna, 4 The presence and polarity of the pulse and the load resistor Open From No Closed Negative Open positive closed bipolar Proofreader V. But ha