Strobe circuit utilizing optocoupler in DC-to-DC converter

Details Strobe circuit utilizing optocoupler in DC-to-DC converter Strobe circuit utilizing optocoupler in DC-to-DC converter

1990-12-28

1992-06-09

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315241S, 340331, H05B 3700

Patent

active

051210339

ABSTRACT:
A strobe alarm circuit utilizing an optocoupler in the DC-to-DC converter portion of the circuit for repetitively connecting and disconnecting an energy-storing inductor across a DC power source. The light-emitting diode portion of the optocoupler is connected in parallel with a resistor connected in series with the inductor for continuously monitoring the current flowing through the inductor; when the inductor current has attained a particular value at which the voltage drop across the resistor is sufficient to turn on the LED, the switch portion of the optocoupler is turned on and disconnects the inductor from across the source. After a short interval determined by the parameters of the optocoupler and associated circuitry, the cycle is repeated.

REFERENCES:
patent: 3921034 (1975-11-01), Nakamura
patent: 4065700 (1977-12-01), Liebman
patent: 4101880 (1978-07-01), Haus
patent: 4495447 (1985-01-01), Shigemi
patent: 4572991 (1986-02-01), Cote
patent: 4742328 (1988-05-01), Arai et al.
patent: 4775821 (1988-10-01), Sikora
patent: 4779027 (1988-10-01), Sikora
patent: 4952906 (1990-08-01), Buyak et al.
patent: 4967177 (1990-10-01), Nguyen

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