| 摘要 |
PURPOSE:To obtain a DC high voltage of an arbitrary amplitude in a small-sized inexpensive electronic circuit by multiplying to rectify two pulse signals of different phases by a multiplying rectifier having a plurality of diode groups and capacitor groups. CONSTITUTION:A low DC voltage is converted by a pulse signal generator 5 like an astable multivibrator (AMV) into two pulse signals 7, 8 of different phases of 180 deg.. The signals 7, 8 are input to a multiplying rectifier 6 having a plurality of diode groups and capacitor groups, converted to a high DC voltage, and supplied to an avalanche photodiode (APD). Thus, even if a stepup transformer to become a noise generation source is not used, an arbitrary high DC voltage can be produced by a small-sized electronic circuit.
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