Document Type and Number:
Japanese Patent JPS52155012
Kind Code:
U
Abstract:
A light-emitting diode of a photo-coupler is energized and de-energized through a connection to a switching means. Radiation from the light-emitting diode directed toward a photosensitive means of the photocoupler, reduces the resistance of the photosensitive means to rendering a switching transistor conductive. The switching transistor is connected to and controlled by the photosensitive means. When the switching means is open, the switching transistor remains conductive for a predetermined time period due to a transient phenomena of a resistance change of the photosensitive resistor.
Application Number:
JP6363076U
Publication Date:
November 25, 1977
Filing Date:
May 19, 1976
Export Citation:
International Classes:
G11B15/10; H01J40/14; H03K17/28; (IPC1-7): G11B15/20
Domestic Patent References:
| JPS5071304A | 1975-06-13 | |||
| JPS50110553A | 1975-08-30 |