This Power supply sources from 500 to 1,000 mA according the transformar and was found in a publication of the year 1958. The diodes can be now the 1N4004 and the transistor should be mounted on a heatsink.
This circuit is from a 1991 publication. It divides the frequency of a TTL signal applied to its...
This 1000: 1 voltage-controlled filter circuit was found in an Electronics Today International in a 1980s...
Found in an Electronics World of 1968 this circuit can use current SCRs and the diodes are...