Found in a 90’s 73 magazine for radio amateurs, this circuit provides a few milliamps of output with -15 V from a 3 V input, when the consumption will be 10 mA.
The simple two-transistor signal injector shown in the figure was found in the May 1971 issue of...
July 2017 - The new touch switches from Alps SKPS series for surface mounting can now be purchased from...
Found in American documentation from the 90s, this circuit can be implemented with modern...