SU506944A1 - Electronic switch - Google Patents

Description

one

The invention relates to the field of radio measurements and can be used to switch input channels of oscillographic devices.

Electronic switches are known for automatically alternately connecting various circuits to the Indicator inputs and containing input devices whose outputs are connected to a switching device, and its control input is connected via a delay circuit to the output of the blocking pulses.

In order to ensure a stable time base sweep, one input device is connected to the output of each input device one by one. each input device is interconnected and connected to the output of the generator of blocking pulses, the switching inputs of the key The circuits are connected to the outputs of the switching voltage generator, and the outputs of the coincidence circuits through the mixer are connected to the start circuit.

The drawing is a diagram of the proposed electronic switch.

The electronic switchboard contains input devices 1 and 2, switching device 3, forming stages 4 and 5, delay circuits 6 and 7, switched stages 8 and 9, coincidence circuits 10 and 11, a generator

12 switching voltage generator

13 blocking pulses, a mixer 14 and a delay circuit 15.

Electronic switch works as follows.

Forming devices 4 and 5, when signals to their inputs come from the output of input devices 1 and 2, they generate pulses of constant amplitude and duration with steep leading edges.

The generated pulses through the delay circuits 6 and 7 arrive at the inputs of the coincidence circuits 10 and 11, the second input of which is connected to the iK output of the com: mutated stages 8

(9).

At one of the inputs of the switched stages and the delay circuits 6 and 7 come

pulses from the output of forming stages 4 and 5. With a corresponding polarity of the pulses from the output of the generator 12, the switching voltage and the absence of a blocking (for the reverse sweep) pulse from the output of the generator 13