This circuit is from a 1972 Motorola publication. The used transistor can still be found, but it can be used equivalent. The circuit is powered by the amplifier with which it must operate.
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...