This proximity sensor was found in a 90s Popular Electronics. The base is a PLL567 that operates at around 100 kHz. The circuit operates by capacitance sensing.
This circuit was found in documentation from the 1970s. It is an oscillator with a push-pull audio...
The dsPIC33EP128GS808 Digital Signal Controller Family now Offers up to 128 KB of Flash while...
May 2017 - Mouser Electronics already has inventory with ROHM BD570xx integrated circuits for...