Abstract: An electronic circuit for pulsing a load, preferably for driving the display of an electronic wristwatch which produces signals of an amplitude greater than the input amplitude of a given periodic signal. The circuit uses two IGFET transistors which are connected by secondary terminals to the output of the circuit. Control electrodes of the IGFETS are connected to condensers while IGFET coupling transistors are used to control the charge and discharge of the charge transistors.

Abstract: Two pairs of serially connected insulated-gate field-effect transistors (IGFETs) are bridged in parallel across a d-c supply, the junction of the drain and source electrodes of the first pair of IGFETs being tied to the gate of one of the IGFETs of the second pair whose junction is connected to a capacitive load circuit to be periodically energized under the control of at least one train of trigger pulses of low duty ratio applied to the gate of at least one of the IGFETs of the first pair. The gates of the IGFETs of the second pair are alternately triggered through the intermediary of a further IGFET, or pair of serially interconnecred IGFETs, controlling the other IGFET of the second pair.