This circuit was obtained from the Encyclopedia of Electronic Circuits volume 5 of 1995. The circuit uses the 4001 CMOS to obtain hysteresis in the sensor feedback.
Indicated for activation by microcontrollers, this circuit was found in the Radio Electronics...
November 2016 - The new OLED modulator for displays with 2 x 16 format can be obtained from Mouser...
This interesting circuit for the RDA8851 allows you to obtain two volumes with a simple touch. The...