This circuit of a 1964 Electronic Design uses a photodiode from the time. Modern equivalent can be used. The standby current is 1.2 mA.
This circuit is based on a component from the time, the MSM0322 integrated circuit. It modifies the...
This circuit was found in the March 1994 issue of Electronics Now magazine. The circuit uses a...
In the figure we have the way to obtain an adjustable constant current source of 2 mA. The...