This old circuit, from the 80's, uses an integrated circuit that is uncommon today. The circuit is intended for loads controlled by triac and the resistors depend on the desired control.
We found this circuit in an American publication in 1973. The circuit generates a low frequency signal...
The L293 circuit is not common today. We found this circuit in the 1982 SGS linear integrated...
This circuit makes use of an uncommon integrated circuit. It can provide a power of 6 W when...