This circuit makes use of comparators and common operational amplifiers, having been found in Motorola Linear Interface ICs of 1993. The circuit requires symmetrical source.
This circuit is from a Radio Electronics from October 1970. The circuit uses transistors from that...
The oscillator shown in the figure generates a 1 kHz tone that is reproduced on the speaker with...
This circuit triggers a load when the sensor detects humidity. The triggering point is adjusted by...