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 measures the RF power of oscillators and small transmitters in the range of 0.05 to...
The circuit in the figure can be used in instruments, or other applications where it is desired to...
This circuit is from a 1975 Sperimentare (number 11). The circuit uses optical coupling for a...