The operating frequency of this circuit is 465 Hz and the input voltage is 12 VAC. The circuit is 65% efficient. We found it in a 1968 Motorola publication.
This circuit that can only be used with simple resistive and inductive loads (never electronic) was...
This digital instrument input circuit was found in the September 1989 issue of Radio Electronics...
This circuit was found in an 80s documentation. The integrated circuit used is from that time,...