SU169571A1 - DIFFERENTIATING DEVICE AC - Google Patents

Description

The known differentiating devices of alternating current are complex complexes of operational blocks. The use of such devices for stabilizing servo systems in practice is limited by their cumbersomeness. The proposed broadband differentiating device of the amplitude of the alternating current, which responds only to an increase in the amplitude, is simpler in terms of the Western devices and solves the problem of differentiation with sufficient accuracy and reliably in operation. It uses a transformer with two parallel integrating circuits connected in series with its primary winding, fed by differently connected diodes. The drawing shows a diagram of the device. The primary winding of the transformer / enters the circuit, consisting of a sinusoidal signal source and two integrating circuits 2 with a constant time much longer than the signal period. The supply voltage to the integrating circuit 2 is supplied through two diodes, which are oppositely connected in such a way that one capacitor of the integrating circuit is charged with a positive half-wave, and the other is negative. When the amplitude of the signal remains unchanged, the diodes of the reverse direction with the reverse voltage of the capacitors and the current through the primary winding of the transformer do not flow. When the amplitude of the signal is lowered, the capacitors are discharged through their shunting resistances to the level of the signal and the current through the primary winding of the transformer also does not flow. In the case of an increase in the signal amplitude, the capacitors begin to charge to the signal amplitude level, the voltage across them increases exponentially, and the current through the primary winding of the transformer decreases exponentially. In the secondary of a transformer, the voltage amplitude also decreases exponentially. Thus, the proposed device is differentiating for AC circuits n with certain parameters of the transformer does not depend on the frequency change. The proposed device can be used in electronic electronic wrinkle devices to provide stabilization of tracking systems operating on alternating current. Subject invention

signal dusts and containing integrating elements, characterized in that, in order to simplify the device and increase reliability of operation, a transformer is used in it

with deum connected in series with its primary winding parallel integrating targets, imitated through diode-connected diodes.

G7

entrance

ФЬ

Dgg I

-W (