This synthesizer circuit was found in a Radio Electronics magazine from May 1983. The circuit uses common components and does not require a balanced power supply.
This circuit was found in a Popular Electronics from the 90s. The circuit uses a ceramic capsule as...
This circuit for link or alarm was found in the Encyclopedia of Electronic Circuits Volume 5 of...
This 15 W power stage was found in Radio Electronics magazine from August 1959. The transistors are the...