| 摘要 |
PROBLEM TO BE SOLVED: To provide a stroboscopic light emission circuit where the consumption of a battery is reduced with a simple constitution. SOLUTION: When a start switch SW1 is closed, the base circuit of transistors Q1 and Q2 is formed, so that the transistors Q1 and Q2 are turned on. An inverter circuit 2 starts oscillating operation, and AC voltage boosted is induced to the boosting coil Tr1c of a boosting transformer Tr1, and it is rectified by a diode D1, so that a charge capacitor C2 is charged with it. When the charge capacitor C2 is charged, gate voltage is applied to a thyristor Q3 because a Zener diode ZD1 is turned on, and a current is made to flow through a resistor R3 because the thyristor Q3 is turned on. A transistor Q4 is turned on and short circuit is caused between the base and the emitter of the transistors Q1 and Q2 so as to turn it off, and the operation of the inverter circuit 2 is stopped, so that the consumption of the battery B is suppressed. |
