This excellent 30 W tube amplifier appeared in the April 1963 Radio Electronics magazine that taught how to assemble it. The critical components in our time are tubes and transformers.
This circuit was found in Radio Electronics magazine from April 1961. The device has a slot for...
This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies...
Found in a 1968 Motorola manual, this DC circuit uses components from the era. The circuit fires in...