Found in a Popular Electronics from the 1990s, this circuit monitors the voltage of a power supply or battery. The trigger voltage is adjusted with a potentiometer.
This circuit was found in an old British publication from 1976. It must be powered with 5 V and...
This midrange filter for sound systems was found in the May 1988 issue of Radio Electronics...
January 2017 - Mouser Electronics already has in stock the Epson TCXO TG2016 crystal oscillators for use...