This 1967 General Electric circuit makes use of an array of 3 (integrated) transistors for an amplifier stage. The circuit has a 500 mV output.
This circuit is from the 1993 Motorola Linear Interface ICs. Equivalent operating may be used and...
This simple 80's CMOS game was found in an English magazine of the time. It appears elsewhere on this...
This circuit latches when the liquid level of a reservoir reaches the sensors. The transistor can be...