This circuit is from a 1968 documentation using one of the first integrated circuits available at the time, the TAA370. The circuit is powered by 1.3 V using a 200 ohm handset.
This simple CMOS touch switch was obtained in a 1987 publication. All components are common and the...
ROHM Semiconductor is featured in a new line of IR LEDs, Proximity Optical Sensors and Ambient...
Found in an 1868 Mullard documentation this circuit has a dynamic range of 10 Hz to 25,000 Hz....