SU367523A1 - PULSE GENERATOR - Google Patents

Description

The invention relates to a pulse technique. The well-known pulse generator, which contains the time setting of the CS-i. &Amp; pj, the midpoint of which is connected to the base of the transistor of the differential amplifier, and the collector of this transistor is connected to the base of the output transistor of the pnp single-oscillator made of transistors of different conductivity types complex scheme and unreliable in operation. The purpose of the invention is to improve the design of the generator and increase the reliability of its operation. For this, between the midpoint of the time specifying the C-chain and the collector of a pnp type one-shot transistor, a fully inserted diode is connected. The drawing shows the electrical circuit of the proposed pulse generator. The generator contains the time setting RC circuit / consisting of capacitor 2 and resistor 3. The connection point of capacitor 2 and resistor 3 (middle point of C-circuit) is connected to the base of transistor 4 of differential amplifier 5. The collector of transistor 4 is connected to the base of transistor 6 of single-phase 7, made on transistors 6 and 8 of different tin conductance (pnr and prnpina respectively). The connection point of the capacitor 2 And the resistor 3 through the additionally introduced diode 9 is connected to the collector of the transistor 5 of the one-shot 7. The base of the transistor 6 is connected through the capacitor 10 to the collector of the transistor 8. The voltage at the base of the transistor 4 increases as the capacitor 2 charges, the transistor 4 opens, goes into saturation state and opens the transistor 6 of the single-oscillator 7. The nanowire on the collector of the transistor 6 will be close to zero. This forms the leading edge of the output impulse. The collector current of transistor 6 leads to saturation of transistor 8. The base current of transistor 6 flows until the end of the charge of capacitor 10. At the moment of opening of transistor 8, start 1 is the discharge time of the drive capacitor 2 through diode 9 and the collector-emitter junction of transistor 8. Transistor 4 closes. The impulse formation ends when the base of the transistor 6 is discontinued. Subject of the invention A pulse generator containing a master / C-circuit, the midpoint of which is connected to the base of the transistor of the differential amplifier, and the collector of this transistor is connected to the base of the output transistor

A type of p-ii-p one-shot made on transistors of different types of conductivity, characterized in that, in order to simplify the generator circuit and increase reliability of operation.

between the midpoint of the impedance of the circuit and the collector of the pnp transistor of the one-shot type, an additionally inserted diode is connected.

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