The integrated circuit used in this amplifier is not very common today. This amplifier was found in the 1977 National Semiconductor Audio Handbook. The power source must be at least 500 mA.
This bistable or flip-flop is triggered by a negative pulse applied to the collector of the...
This circuit was obtained in a 1980 publication. The transistors can be BC548 or 2N2222. The...
This circuit has its battery charged by a solar system. The circuit uses components that admit...