Suggested by Amperex in 1968, this circuit is intended for hearing aids. The integrated circuit used, a TAA370 is not common today.
This simple speed control for 3 to 15 V motors uses a common power transistor. The circuit was...
We found this guitar effects circuit in a 1997 documentation. As the components used are still...
This circuit was found in documentation from the 1970s. The transistor supports modern...