This 1960s Japanese receiver uses 6 germanium transistors, being powered by a 6 V voltage obtained from large batteries. The circuit is for the medium wave range of the superheterodyne type.
This simple speed control for 3 to 15 V motors uses a common power transistor. The circuit was...
The SN76477 integrated circuit of the 1980s was a great success as a sound effects generator. Many...
This circuit with 10 MHz and 1.25 MHz TTL outputs was found in an American documentation from the...