This small audio amplifier circuit in complementary symmetry was found in the 1974 Mullard Databook. The output pair can also be the BD135 and 136.
The output voltages of this power source are selected by a switch according to the capacitors. The...
We found this oscillator in a documentation from the 70s. The FET can be MPF102 and the crystal is 1...
This divider by 8 is synchronized because it is implemented based on TTL or CMOS logic according to the...