The rapid motion of the vibrator was used to operate a switch. The switch was used to alternate the connection of the 6 volt DC power between two terminals of a transformer, in effect, supplying an AC input voltage to the transformer. The transformer produced a higher voltage AC supply at its output terminals. This arrangement is a simple type of inverter circuit. The vibrator switches used for this purpose were usually encased in a steel or aluminum can equipped with a plug for mounting in a tube socket.
