This small tube amplifier appeared in Radio Electronics magazine in February 1958. The circuit is powered by the mains with a power transformer and output with different impedances.
This circuit synthesizes a sinusoidal signal from logic pulses that can be obtained from an...
This oscillator can be found in other articles on the site. This is from a 4 MHz documentation, remembering...
This circuit has its battery charged by a solar system. The circuit uses components that admit...