POWER SUPPLY CIRCUIT, AND ION GENERATION DEVICE AND ELECTRICAL EQUIPMENT USING THE SAME

PROBLEM TO BE SOLVED: To provide a power supply circuit of low power consumption.SOLUTION: In an ion generation device, when a drain-source voltage Vds of a transistor 4 is raised due to a voltage appeared at a primary coil 5a of a step-up transformer 5 after the transistor 4 makes a transition from...

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1. Verfasser:	DATE KAZUHARU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS CORONA DEVICES ELECTRICITY GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES OVERVOLTAGE ARRESTERS USING SPARK GAPS SPARK GAPS SPARKING PLUGS
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a power supply circuit of low power consumption.SOLUTION: In an ion generation device, when a drain-source voltage Vds of a transistor 4 is raised due to a voltage appeared at a primary coil 5a of a step-up transformer 5 after the transistor 4 makes a transition from an on state to an off state, a diode 13 and a Zener diode 14 are turned on, and then, a current I1 flows from the primary coil 5a to a capacitor 11 via the diodes 13 and 14. The current absorbed in the capacitor 11 is supplied to the primary coil 5a when the transistor 4 is turned on, and reused. Accordingly, power consumption can be reduced. 【課題】低消費電力の電源回路を提供する。【解決手段】このイオン発生装置では、トランジスタ４がオン状態からオフ状態に遷移された後に昇圧トランス５の１次巻線５ａに現れる電圧によってトランジスタ４のドレイン−ソース間電圧Ｖｄｓが上昇すると、ダイオード１３およびツェナーダイオード１４がオンし、１次巻線５ａからダイオード１３，１４を介してコンデンサ１１に電流Ｉ１が流れる。コンデンサ１１に吸収した電流は、次にトランジスタ４がオンしたときに１次巻線１ａに供給し、再利用する。したがって、消費電力を低減できる。【選択図】図６