该二极管象一个可变的电阻。当电容器的充电电流很大时，其阻值很低；而电流随时间变小时，其阻值增大。
The diode ACTS like a variable resistance, low when the charging current to the capacitor is high, then increasing in value as the current decreases with time.
一支放大的晶体管然后检查剩余电压在这个二极管，并且这个二极管再被再充电。
An amplifying transistor then checks the remaining voltage on the diode, and the diode is recharged again.
所述放电回路包括一放电二极管，该放电二极管并联于所述限流充电电阻两端；
The discharging loop includes a discharging diode connected to the current limiting charging resistance in parallel.
所述放电回路包括一放电二极管，该放电二极管并联于所述限流充电电阻两端；
The discharging loop includes a discharging diode connected to the current limiting charging resistance in parallel.
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