JPS6421427A - Power source circuit for camera - Google Patents

Abstract

PURPOSE:To reduce the scale of a circuit and to enhance a conventional saving in space by making it possible that a power source circuit uses the part of the circuit to a booster transformer in common. CONSTITUTION:An output from an oscillator 1 which outputs the signal of a specified frequency is boosted and two-phase AC voltages whose phases are different each other are outputted from a boosting circuit 2. The phases of the two-phase AC voltages outputted from the boosting circuit 2 are switched to a phase which gives a progressive wave and a phase which gives a standing wave by a control circuit 6. When the phase of the two-phase AC voltages makes the voltage of the phase which gives the progressive wave outputted, an oscillating wave motor 3 which actuates the mechanism of a camera is driven and also the charging path in a charging circuit 4 for stroboscope is opened. And when the phase of the two-phase AC voltage makes the voltage of the phase which gives the standing wave outputted, the main capacitor 5 of the charging circuit 4 for stroboscope is charged with at least either of the two-phase AC voltages. Thus, the scale of the circuit can be reduced and the saving in space can be enhanced.