This circuit is used in magnetic tape recorders, having been found in documentation in the 1960s. The circuit uses Japanese transistors, and the critical components are transformers.
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...