This circuit was found in an article in Electronics Now magazine from March 1997. The transistors are general purpose, and the indicator is a 1 mA full scale analog type.
This circuit was found in the July 1969 Radio Electronics magazine. The circuit controls resistive...
August 2017 - Mouser Electronics is announcing the availability of TDK ICS-52000 microphones with...
The oscillator of this circuit operates around 8 MHz, but the output will be at a frequency three times...