This “people detector” with pyroelectric sensor was found in the April 1991 issue of Radio Electronics magazine. The circuit is based on an LM324 and a sensor from that time.
This circuit is used in the analog part of the telephone lines. The same circuit can directly...
Ohmite TGHD non Inductive High Power Resistors Available in SOT-227 enclosures, these Ohmite...
This conventional astable uses two NPN transistor and was found in a publication of the year 1968. The...