The principle of operation is as simple as the circuit itself: When power is applied, the transistor will conduct the current allowed through resistors R1 and R2 into the flyback primary, causing it to induce a current on the secondary, and, at the same time, on the feedback winding. This feedback current will trigger the transistor to stop conducting, and as the magnetic field in the ferrite core collapses, a large HV spike will appear on the secondary windings (basic inductor action). But now there is no feedback current to keep the transistor off, so it will once again conduct, and the cycle will repeat, at a natural frequency that puts the transformer in resonance, resulting in enormous voltage gain. One of the advantages of having a feedback winding is that the circuit becomes dynamic: The frequency of operation is automatically adjusted to resonance, depending on many factors. It is interesting, because you can actually hear the frequency change as you draw an arc (high loads drop the frequency to a high pitched 20Khz whine which than becomes ultrasonic as the arc grows).
Can you speak chinese? 操作原理是【9130】,这条赛道本身:当通电时,晶体管将进行电流允许通过电阻R1和R2为反激式小学,从而导致促使对目前的中学,并在同时,在反馈绕组。这种反馈电流的晶体管触发停止进行,并作为磁场铁芯倒塌,大型高压尖峰会出现在二次绕组(基本电感行动)。但现在有没有反馈电流来保持晶体管关闭,所以它会再次conduct,以及该周期将重复,一种天然的frequency that把在谐振变压器,于丰厚的电压增益resulting。对有反馈绕组的好处之一是,该电路变为动态:工作频率自动调整到共振,这取决于许多因素。有趣的是,因为你其实可以听到频率的变化,你画一个弧(高负荷下降的频率20kHz的高音调抱怨不仅限于成为电弧超声的增长)。
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