The CA3020 integrated circuit was one of the first commercial types, sold in the 1960s. The circuit presented is from 1968 using a power stage with RCA transistors of the time.
The circuit presented is a 10 MHz oscillator with crystal, which already has several splitters for...
This amplified speaker is from a Radio Electronics from September 1988. The power integrated...
This circuit was found in a 1987 edition of the United States' Hands On Electronics magazine. The...