Luminous element and driving circuit

Details Luminous element and driving circuit Luminous element and driving circuit

1987-12-07

1989-09-05

Griffin, Robert L.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Load device and impedance

340762, G09F 900

Patent

active

048641936

ABSTRACT:
A luminous element and driving circuit in which an additional circuit is connected in parallel with the luminous element which in turn is serially connected with a suitable transistor. The additional circuit includes an element for minimizing distortion of the luminous output. In one embodiment, a field effect transistor with its gate and source connected together is serially connected with a coil to quickly discharge the luminous element when the transistor is turned off and charge the element quickly when the transistor is turned on. In a second embodiment, a semiconductor diode is serially connected to the coil to form the additional circuit. The voltage across the light emitting diode when the transistor is turned off causes the luminous element to be immediately luminous.

REFERENCES:
patent: 4068148 (1978-01-01), Nomiya et al.
patent: 4190836 (1980-02-01), Kimura et al.

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