Abstract: A regulated voltage converter for converting a relatively low voltage to a relatively high voltage. The converter includes a voltage converter for converting a relatively low voltage to a relatively high voltage, a constant current source, reference means coupled to the constant current source and the voltage converter for providing a reference voltage related to the relatively high voltage, a threshold detector coupled to the reference means for generating a control signal when the output of the voltage converter drops below a predetermined threshold value, a sense and enable means responsive to the appearance of the control signal for enablng the voltage converter, and sample means coupled to the constant current source, the threshold detector and the sense and enable means for periodically enabling the operation of these elements. The duration of the enabling period is small relative to the period therebetween.

Abstract: A system for controlling the relative phase of a pair of relatively high voltage signals in response to a relatively low voltage control signal from a source. The system includes a source for providing a pair of periodic relatively high voltage signals of opposite phase, a level converter adapted to be coupled to the source of low voltage control signal for converting the low voltage control signal to a high voltage control signal, and a transfer gate having a pair of transfer inputs each coupled to a different one of a pair of periodic relatively high voltage signals and a control portion coupled to the level converter for transmitting a first one of the pair of periodic relatively high voltage signals to the output in the absence of the control signals and for transmitting the other one of the pair of periodic relatively high voltage signals to the output when the control signal is present.

Abstract: A C MOS level converter for converting low voltage control signals to equivalent control signals of a relatively high voltage which operates with extremely low power consumption. The level converter has first and second pairs of P-type MOS transistors coupled source to source and drain to drain, the commonly connected sources of each pair being coupled to ground potential and the gate of each outer transistor of each pair being coupled to low voltage control signals of opposite phase. The gate of each inner transistor of each pair is coupled to the common drain terminal of the other pair, and the common drain terminal of each pair is coupled to the drain terminal of a different one of a pair of N-type MOS transistors. The gate of each N-type transistor is coupled to the gate of the associated inner transistor of the first and second pairs.