SU365028A1 - PULSE DISTRIBUTOR - Google Patents

Description

This invention relates to automation and computing. The device is intended for use as a pulse generator of a predetermined time sequence.

Known pulse distributor, containing series-connected amplifiers transistors included in the scheme with a common emitter. In this case, the collector of each transistor is connected to the base of the subsequent transistor through the time specifying the capacitor.

The purpose of the invention is to reduce the duration of the fronts of the output pulses. It is achieved by the fact that the proposed distributor contains additionally two key transistors and two circuits, and the collectors of the transistors of all even-numbered amplifiers through one and the odd-numbered "OR circuit", respectively, with the collector of one and the other transistor.

The drawing shows the electrical circuit of the pulse distributor.

The distributor contains series-connected amplifiers on transistors li (i), connected according to the scheme with a common emitter. Transistors 2 n 3 are key. Diodes 4i, connected to the code of the RKTO of odd and even amplifiers, form, respectively, two schemes «OR.

In the initial state, the transistors / of all the stages of the distributor are open and the capacitors 5; connections are discharged, transistors 2 and 3 are closed.

When a positive polarity distributor of the trigger signal arrives at input 6, transistor 1 is closed. In this case, the capacitor 5i is charged along the circuit; power supply positive 7 - emitter junction - transistor base / 2 - capacitor 5i - resistor Si - negative bus 9 of the power source, capacitor 10 is charged along the circuit: bus 7 - junction emitter - base of transistor 2 - capacitor 10 - diode 4i - resistor // i - bus I and for some time, the transistor 2

is held in the open state by the charge current of the capacitor 10 and through the diodes of the circuit OR shunt all collectors of the even-numbered distributor cascades. At the end of the charge of the capacitor W, the transistor 2 is closed.

At the moment of termination of the triggering pulse, the transistor / 1 opens, and the discharge of the capacitor 5i along the circuit begins: bus 7 - junction emitter - collector of the transistor / g-

diode / 2 | - capacitor 5i - resistor 13 - spine 9. Transistor / 2 is in the closed state for a time proportional to the constant discharge of capacitor 5. When the transistor 1-2 is closed, the charging current of the capacitor 14 opens the transistor 3, which bypasses the collectors of transistors of odd stages the distributor and discharges the capacitor 10 on the circuit: capacitor