This circuit was designed to power the previous circuits of the wireless sound system, but it can be used for other purposes. The circuit is from a Radio Electronics from August 1988.
In the figure we have a circuit suggested by National Semiconductor, using an operational...
We found this circuit in a Popular Electronics from 1992. It modulates an infrared LED with a...
This receiver amplifier (booster) is from American documentation from the 1970s. The integrated circuit...