This is the circuit of a commercial radio sold in Japan in the 1960s. The IF is 455 kHz, and the supply is made with a voltage of 9 V. The radio receives stations in the medium wave range.
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...