This transistorized circuit is powered by a voltage of 6 to 12 V providing high voltage for a neon lamp. The circuit is from a 90's publication. Modern equivalent transistors can be used.
This circuit receives the local stations of medium waves listened to in a piezoelectric capsule or...
This circuit was published in an 80's American documentation, but it is still current. The power...
This simple neon lamp power indicator circuit was found in the January 1971 Radio Electronics...