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.
Found in the 1974 Ferranti transistor manual, this Schmitt trigger circuit uses general-purpose transistors...
This circuit was developed to test suspect 4001 and 4011 integrated circuits. The circuit is from...
This power source with silicon diodes at a time when valves were still used was found in Radio...