SU1220114A1 - Pelser with delayed feedback - Google Patents

Abstract

The invention relates to a pulse technique. It can be used to generate and form pulses in communication devices, calculating and measuring equipment. The purpose of the invention is to expand the functional capabilities of the device by effectively electrically isolating the drive circuit and the load circuit. The generator contains semiconductor devices 1 and 2, a delay element 3, a power source 4, and a load circuit. To achieve this goal, a constant current generator 6 is introduced into the device, and tetrodes are used as semiconductor devices 1 and 2. A timing circuit with a delay element 3 and an output circuit with a load element 5 are galvanically separated, which expands the choice of load. I p. sl tsD ±

Description

The invention relates to a pulse technique and can be used to generate and generate pulses in communication devices, computing and measuring technology.

The purpose of the invention is to expand the functionality of the device by effectively galvanically isolating the time of the driving circuit and the load circuit.

The drawing shows a circuit diagram of the proposed device.

The delayed feedback pulse generator contains the first active semiconductor device 1 and the second active semiconductor device 2, between which the delay element 3 is connected, the power supply source 4 connected to the active semiconductor devices 1 and 2, and the load element 5. A DC generator 6 is introduced into the device, active semiconductor devices 1 and 2 are made in the form of tetrodes, respectively, vi-pn-ir-p-p-type, while the emitter of the first tetrode 1 is connected to the first output base of the second tetrode 2 through the load element 5 is connected to the positive pole of the power supply source 4, the negative pole of which is connected to the second output of tetrode 2 bases, the first output of tetrode base 1 is connected to the first output of the dc generator 6 and through the delay emitter element 3 yes 2, the second output of the DC generator 6 and through the delay element 3 - with the emitter of the tetrode 2, the second output of the DC generator 6 is connected to the second output of the tetrode base 1 and the collector of the tetrode 2,

The device works the footing in a skinny way.

When the source 4 is turned on, the collector p-and-junction of the tetrode 1 is shifted in the opposite direction, so there is no current in the circuit of load element 5. When the generator 6 is turned on, its current, equal to, 1st 1, at the beginning, completely branches into the base circuit of tetrode 1. If the current level 1g exceeds the current ICMD P which occurs the closure of the emitter14142

tertiary and collector p – n junctions of tetrode 1, then a positive pulse of the output current increases in the circuit of the load element 5. 5 If the current level 1p exceeds the current Ij. ,,, at which the emitter and collector Pn junctions of tetrode 2 are closed, then after a time interval it. detected by the delay element 3, a current equal to 1 cm2 appears in the emitter circuit of tetrode 2. In this case, the current in the base circuit of tetrode 1 drops sharply to a level equal to IP - I (ff215 If IT is I CM2 - cm, the emitter and collector p-D) transitions of tetrode 1 are opened. As a result, the output current pulse in the circuit of the load element 5 is stopped.

The load element 5 and the base circuit of tetrode 2 are connected in series. Therefore, at the time of the output current decay, the emittance and collector p – P junctions of tetrode 2 open. At the time interval At, j, the current branching to the circuit with delay element 3 drops to zero, and the current in the base circuit of tetrode 1

30 increases abruptly to level 1 I. A new closure of the emitter and collector pn-junctions of tetrode 1 occurs, and the next pulse of the output current is generated in the circuit of the load element 5.

Further, the processes in the device are periodically repeated over the indicated cycle.

In the device, the time setting circuit

40 with the element 3 delays and the output circuit with the element 5 of the load are galvanically separated. Therefore, as part of the load 5, you can use a variety of objects

45 does not affect the period following the output current pulses, which expands the functionality of the proposed pulse generator.

Claims (1)

50 claims A delayed-feedback pulse generator containing the first and second active semiconductor devices, between which a delay element is connected, a voltage supply source connected to active semiconductor devices3 frame, and a load element, characterized in that, in order to expand its functionality, a DC generator is introduced into it, and the first and second active semiconductor devices are made in the form of tetrades hpn- and pnp-type, respectively the emitter of the first tetrode is connected to the first terminal of the base of the second tetrode, the collector of the first tetrode through the load element 144 connected to the positive pole of the power supply source APA, the negative pole of which is connected to the second base terminal of the second tetrode, the first base terminal of the first tetrode is connected to the first output of the direct current generator and through the delay element to the emitter of the second tetrode, with the second output of the base of the first tetrode and the collector of the second tetrode.