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 can generate signals in the VHF range and can be used as the basis for small...
This circuit uses a LM3900 Norton amplifier and a 2.7 V zener diode to supply a current of 1 mA to...
This circuit provides a reference voltage of 2.5 V adjusted in the trimpot. The transistor can be...