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 flip-flop or bistable was found in a publication about transistors from the 60's. The circuit...
This circuit allows you to program a resistance by combining the selected resistors. The circuit...
We found this receiver for the 144 MHz band in a European publication from the 1970s. The circuit...