This amplifier is from Motorola's 1990 Linear Databook. The circuit can be used with operating amplifiers with the same characteristics and the power supply must be symmetrical.
The L1 and L2 coils of this receiver depend on the waveband you want to receive. Normally L2 has...
This sensitive AM radio doesn’t need external antenna, picking easily local stations. The output...
This circuit causes the neon lamps in a set to flash randomly. Capacitors determine the speed of...