Using the integrated circuit DCP01051D this circuit was found in the magazine Electronics Now of August 1998. The maximum current is 50 mA.
This circuit from a 90s Electronics Now, uses a 4010 gate as a signal amplifier. The circuit...
Published in a PE Hobbyst Handbook of 1991, this sensor uses an integrated circuit that is unusual...
Found in American documentation from the 90's, this circuit consists of a solid state relay with...