The sensor is S1 in this alarm that we found in a Radio Electronics magazine from May 1971. Several sensors can be used in series. The SCR supports equivalents from the 106 series.
September 2016 - Mouser Electronics is offering the new oscillator clock PECL series PE55K of the...
This symmetrical limiter or reaper circuit is based on a zener diode. Voltage drop across common...
This circuit was found in the August 1994 issue of Electronics Now magazine. The 4046 is uncommon...