This power control for powers up to about 10 W uses wire potentiometers in an arrangement that allows to maintain the impedance. The circuit is from old European documentation.
This watt meter was found in an old telecommunications documentation. The circuit is interspersed...
We found this circuit in the April 1992 issue of Radio Electronics magazine. The circuit uses an...
This circuit is from old documentation. The operational amplifier is uncommon nowadays. The...