This receiver for the AM band with 6 transistors was manufactured in the 60's in Japan. The power is made with 9 V and the circuit is of the super heterodyne type with FI of 455 kHz.
This is a slightly different configuration of full-wave power control than we found in an old...
This 1-transistor timer was published in Radio Electronics magazine in December 1960. The circuit has...
This type of circuit is widely used in old cassette recorders and tape players, regulating the...