The circuit presented is from the Motorola Linear Databook of 1990. The integrated circuit is a transconductance operating and the power supply need not be symmetrical.
This circuit was obtained in an old Elektor and can be adapted to use white power LEDs. The...
This circuit of a 1991 PE Hobbyst Handbook allows the brightness of the incandescent lamp to be...
The purpose of this circuit is to warn the driver when he turns off the car while leaving the...