The 1: 1 transformer on this circuit found in a 1967 Electronics World can be wrapped around a small ferrite rod. The circuit operates with 600 to 6 000 Hz control signals.
Suggested by the National Semiconductor in 1980s documentation, this circuit uses components from the...
We found this circuit that protects speakers against current surges that occur when the amplifier is...
The circuit presented is from the Linear Applications Handbook of the National Semiconductor of...