This 5 W transistor amplifier for the car was found in an English documentation from 1969. The transistors are from that time and the transformer is of a special type.
This circuit uses a NAND port to convert rectangular signals from 50 kHz to 1 MHz into triangular...
This circuit activates a relay producing pulses at regular intervals adjusted by the...
This oscillator is indicated for the adjustment of FI of FM radios, having its frequency...