Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1979-05-02
1981-03-17
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307252J, 328 67, H03K 507, H03K 501, H03K 301
Patent
active
042569826
ABSTRACT:
A pulse shaping and amplifying circuit is formed by connecting a capacitor in series with the primary winding of a pulse transformer, connecting normally open switching means in parallel with the capacitor and primary winding, and connecting this parallel combination through a series inductor to a source of d-c control power, whereby the capacitor accumulates a charge from the control power source and then, during periods when the switching means is closed, discharges through the switching means and the primary winding. During its closed periods the switching means also conducts current from the control power source through the inductor, but when the switching means is opened the current in the inductor is transferred to the capacitor and the primary winding and thereby assists recharging of the capacitor. The pulse transformer is provided with at least one secondary winding which is connected to a load circuit by a full wave rectifier means comprising a first diode poled to conduct load current when capacitor discharge current is flowing in the primary winding and serially interconnected second and third diodes poled to conduct load current when capacitor charging current is flowing in the primary winding. Another capacitor is connected in series with one of the second and third diodes across the load circuit, whereby it ensures continuous load current after the first half cycle of operation of the pulse shaping circuit if the closed periods of the switching means recur at a sufficiently high frequency.
REFERENCES:
patent: 3423664 (1969-01-01), Dewey
patent: 3558983 (1971-01-01), Steen
patent: 3646578 (1972-02-01), Gregory
patent: 3681677 (1972-08-01), Badal
patent: 3887836 (1975-06-01), Leete
"Gate Trigger Characteristics, Ratings and Methods" General Electric SCR Manual, pp. 71-122, Fifth Ed., 1972.
General Electric Company
Richardson, Jr. Albert S.
Zazworsky John
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