闪烁瓶法测氡仪的高压电源电路设计

Scintillation flask method for measuring radon in the high voltage power circuit design

文章介绍的是闪烁瓶法测氡仪的高压电源电路的设计,由于该仪器的工作要求,需要产生-820V的负高压,为了保证系统的稳定性,避免各路工作电源的相互干扰,特选用DC-DC转换器MC34063芯片专门为高压产生电路设计一个升压转换电路,单独一路输出为高压产生电路供电。高压产生电路由脉冲变压器、振荡器、开关管所组成的间歇振荡器将反冲电压升压,升压后再经过四倍压整流滤波电路进行倍压、整流、滤波,从而获得上千伏的直流负高压。实验及应用结果表明该电路具有良好的性能和很高的应用价值。

This paper introduces the scintillation flask method radon detector of high voltage power supply circuit design, because the apparatus work requirements, ：need to have 820V negative pressure, in order to guarantee the stability of the system, each power supply to avoid mutual interference, we used DC-DC MC34063 converter chip specifically for the high voltage generating circuit design of a boost converter circuit, a separate output for a high voltage generating circuit power supply. High voltage generating circuit comprises a switch tube oscillator, pulse transformer, consisting of the blocking oscillator will recoil voltage boost, boost after the four voltage doubling rectifier filter circuit, rectifier, filter double pressure, thereby obtaining thousands of volts DC negative high voltage. Experiment and application results show that the circuit has good performance and high application value.