Abstract: An arrangement of switched-mode power supplies is disclosed. The arrangement includes at least two switched-mode-type power supplies that are provided with a transformer and that have outputs connected in parallel without a separation diode at the output of each power supply. Each parallel-connected switched-mode power supply includes means for generating in a reference voltage output a voltage that is proportional to the pulse duty factor of the secondary voltage of the transformer. The reference voltage outputs of each switched-mode power supply are connected in parallel. Each parallel-connected switched-mode power supply also includes means for detecting a current that flows through the reference voltage output, and for generating a correction voltage proportional to this current in order to correct the output voltage of the switched-mode power supply.

Abstract: Crowbar current in a CMOS amplifier circuit is limited during a transition state where one transistor is being turned on and another transistor is being turned off. The transistor that is being turned off is caused to pass through a midpoint state before the transistor that is being turned on is allowed to transition through a similar midpoint state. In one embodiment, independent gate voltages are applied to the P and N transistors of a CMOS amplifier. The gate voltages are independently controlled prior to passage through a midpoint level and then converge towards one another after passage through the midpoint state.