FIELD: computer engineering.
SUBSTANCE: invention relates to computer engineering, information-measurement equipment, automation and industrial electronics. For this purpose a controlled switch of electric circuit elements includes an additional operational amplifier, an inverting input of which is connected to a common lead of the second, the fourth resistors and an inverting input of the available operational amplifier, the latter output is connected to a non-inverting input of the additional operational amplifier, to its output a free lead of the fourth resistor is connected, a lead for the positive supply voltage of the additional operational amplifier is connected to the common lead of the first controlled key and the lead of the existing operational amplifier for connection of the positive supply voltage, a lead for the negative supply voltage of the additional operational amplifier is connected to the common lead of the second controlled key and the lead of the existing operational amplifier for connection of the negative supply voltage.
EFFECT: reducing the value of direct resistance and reducing the value of residual voltage of the controlled switch of electric circuit elements.
1 cl, 1 dwg
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