Circuit arrangement for generating a control voltage which is de

Details Circuit arrangement for generating a control voltage which is de Circuit arrangement for generating a control voltage which is de

1983-01-14

1986-05-27

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307261, 307592, 307597, H03K 1756, H03K 500, H03K 513

Patent

active

045917337

ABSTRACT:
A circuit arrangement for generating a control voltage which is dependent upon an alternating voltage. A charging capacitor is provided which has a charge that is representative of the control voltage which can be varied by controllable charging and discharging of the capacitor. A charging circuit including a transistor is connected so that the alternating voltage is coupled to the transistor base and the transistor collector-emitter path is connected between a charging current source and the capacitor for charging the capacitor under control of the amplitude of the alternating voltage, with the collector voltage of the transistor being representative of the charge state of the capacitor. A capacitor discharge circuit is connected to provide a discharge path for the capacitor, the discharge path having a variable conductance. A capacitor discharge control unit, including a delay member is connected for increasing the conductance of the discharge path in dependence on the time elapsed after a decrease of the alternating voltage amplitude.

REFERENCES:
patent: 3259849 (1966-07-01), Willett et al.
patent: 3716801 (1973-02-01), Minner
patent: 3848194 (1974-11-01), Nishimura et al.
patent: 3969680 (1976-07-01), Wermuth
patent: 4220929 (1980-09-01), Talbot et al.
patent: 4270103 (1981-05-01), Schroder
patent: 4318009 (1982-03-01), Schroder
patent: 4321482 (1982-03-01), Schroder et al.
patent: 4322636 (1982-03-01), Schroder et al.
patent: 4422049 (1983-12-01), Akagiri et al.

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