Radiant energy – Photocells; circuits and apparatus – Signal isolator
Patent
1991-01-31
1992-09-29
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Signal isolator
307311, G02B 2700, H03K 342
Patent
active
051516020
ABSTRACT:
A semiconductor relay circuit includes a MOS FET receiving a photovoltaic output generated across a photovoltaic diode array. The photovoltaic diode array is responsive to a light signal from a light-emitting element. A cross gate and source electrodes of a MOS FET is connected a control circuit which is at a high impedance state during the generation of the photovoltaic output but to be at a low impedance state upon disappearance of the output. Additionally, resistors are inserted in series respectively in each of current, one path flowing from the photovoltaic diode array across the gate and source electrodes of the MOS FET and the other path flowing a discharge current from a capacity across the gate and source electrodes of the MOS FET to the control circuit, whereby the setting of rise and fall of circuit output signals can be made easier.
REFERENCES:
patent: 4277098 (1980-10-01), Brown et al.
patent: 4390790 (1983-06-01), Rodriguez
patent: 4801822 (1989-01-01), Idaka et al.
patent: 4804866 (1989-02-01), Akiyama
patent: 4916323 (1990-04-01), Hayashi et al.
patent: 5013926 (1991-05-01), Aizawa
patent: 5057694 (1991-10-01), Idaka et al.
Idaka Yukio
Matsumoto Takeshi
Miyajima Hisakazu
Miyamoto Yasunori
Yamaguchi Shuichiroh
Matsushita Electric & Works Ltd.
Messinger Michael
Nelms David C.
LandOfFree
Semiconductor relay circuit using photovoltaic diodes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semiconductor relay circuit using photovoltaic diodes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor relay circuit using photovoltaic diodes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1970478