The circuit presented is from the Motorola Linear Databook of 1990. The integrated circuit is a transconductance operating and the power supply need not be symmetrical.
This circuit was suggested by Philips in 1967 documentation. The circuit receives modulated light and has...
This circuit is from the 80's but uses common components today. The relay is voltage sensitive...
August 2016 - It can be obtained from Mouser Electronics the new single controller LCD S1D13L04 from...