This NEC commercial amplifier was manufactured in Japan in the 1960s. The circuit uses 4 transistors from the time and was powered by a 9 V battery voltage formed by large batteries.
The 8038 integrated circuit consists of a function generator with outputs of three waveforms. It...
This is a traditional CMOS configuration found in other articles in this section and on this...
This circuit is from the old RCA transistors manual of 1964. The transistor can be the BC558 and...