We found this circuit in the September 1995 issue of Electronics Now magazine. The circuit has 6 scales for resistance measurements and uses an analog indicator from 50 uA to 1 mA.
The CK722 transistor used in this circuit is one of the first commercial types in the world. The...
This automatic dimmer for incandescent lamps was found in a European publication from the 1980s. The...
This traditional doubler configuration with the 555 can be found in other articles on the author’s site....