This circuit is from a Mallory 1968’s documentation. The integrated circuit is of the time and the transistor admits equivalents.
September 2017 - Semtech's proximity sensors SX9310 with Specific Absorption Rate (SAR) can be...
This circuit was obtained from an 80's Radio Electronics. The circuit decodes “scrambled” or...
We found this circuit in the August 1994 issue of Electronics Now. The 4046 is unusual today. The...