We found this circuit in the March 1999 issue of Electronics Now magazine. The indicator used is an analog type. The values indicated depend on the calibration.
This filter is suggested by the Texas Instruments Linear Circuits Applications, 1986 edition. The...
With each touch on S1, an output of 4017 is activated, this in sequence 3, 2, 4, etc. These...
This inverter for 230V (220V) loads was found in the 2021 Internet documentation and is based on...