This circuit has a gain of 6 dB for low frequencies from 85 Hz and can be used in a mini subwoofer. The circuit is from a Radio Electronics from March 1990.
The circuit shown in the figure can be used as a high voltage indicator on a power supply line of...
This simple circuit was found in the November 1992 issue of Radio Electronics magazine. It...
The circuit shown by the figure below can produce signals in the range between 20 kHz and 30 kHz....