This mouse circuit was found in the January 1997 issue of Electronics Now magazine. It uses a PIC that must be programmed according to the movements.
This circuit uses a JFET CA3140 operational amplifier to convert a low frequency sinusoidal signal...
This circuit is from the National Semiconductor Audio Handbook. The amplifier operates with 6 V...
This simple amplifier was found in a Radio Electronics magazine from July 1970. The transistors are...