發明
中華民國
102123542
I 502868
自激式單級高功率因數之驅動電路
國立虎尾科技大學
2015/10/01
一種自激式單級高功率因數之驅動電路,包含一整流電路及一訊號產生電路,該訊號產生電路包含一訊號觸發電路、一準半橋諧振電路、一儲能電路及一觸發訊號變壓器,每一訊號觸發電路皆包含一觸發開關及該觸發訊號變壓器, 該儲能電路包含一雙向觸發二極管,其中,一儲能電容(C¬2)之一端與該雙向觸發二極管電性連接,並以該儲能電容(C¬2)之電壓作為該雙向觸發二極管導通之導通電壓來源,藉由電路本身之自我驅動切換開關,且電路內之觸發開關(S1、S2)皆操作於零電壓切換,可提升使用之效率。 The invention is related to a self-oscillating and single stage high power factor driver circuit having a rectifier circuit and a signal generator. The signal generator has a signal triggered circuit, a quasi-half-bridge resonant circuit, a storage circuit and a signal triggered transformer. Each one of the signal triggered circuit has a triggered switch and a signal triggered transformer. The storage circuit has a SDIAC, one end of a storage capacitor (C2) is electronically connected with the SDIAC and the SDIAC is activated by a voltage on the storage capacitor (C2). The efficiency can be improved by the self-driven switch of the circuit and the signal-triggered switch (S1,S2) inside the circuit works in a zero voltage switching state.
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