This circuit was found in specialized microwave documentation from the 1960s. The circuit makes use of a varicap, and the transistor is a microwave type.
This is a simple solution for old vehicles that do not have this feature, having been found in a...
Taking advantage of the high input impedance of the operational amplifier 741 and its high gain, we...
An interesting possibility of use for the 555 CMOS is as a low consumption LED flasher, as shown. In...