FIELD: measuring equipment.
SUBSTANCE: invention relates to information-measurement equipment, automation and industrial electronics. Controlled switch of voltages carrying an information comprises an input voltage source, a load resistor, an output voltage and a control voltage. First output of the input voltage source is connected to the first output of the load resistor and their common output is grounded, the second output of the load resistor forms the output of the controlled switch relative to the “ground”, it includes a set of elements: a non-inverting voltage repeater on an operational amplifier, two controlled electronic switches, two DC voltage sources of the positive and the negative polarities. Output of the last generator is connected to the control input of the second controlled switch, the input of the control voltage generator for the controlled switches is fed with the control voltage, the common bus of this generator is grounded.
EFFECT: technical result is providing the possibility of maintaining the switch in the closed state for a long time without deterioration of the parameters: residual voltage of the switch and its reverse resistance.
1 cl, 1 dwg
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