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发明公开
CN109274257A 输出短路逐开关周期限流保护电路及电子变压器 审中-实审

输出短路逐开关周期限流保护电路及电子变压器
摘要：
一种输出短路逐开关周期限流保护电路，包括二极管D6、二极管D5、二极管D2、二极管D9、二极管D4、二极管D3、驱动绕组T2-2、驱动绕组T2-3、电阻R4、电阻R7、三极管Q2和三极管Q1，可使得电子变压器半桥电路中的三极管Q2和Q1不会深度饱和导通，不会因电流过大而烧毁，实现了逐开关周期限流保护，因此，具有输出短路逐开关周期限流保护电路的电子变压器，也能实现逐开关周期限流保护。
摘要（英）：

An output short circuit cycle-by-cycle switching current limit protection circuit comprises a diode D6, a diode D5, a diode D2, a diode D9, a diode D4, a diode D3, a driving winding T2-2. Drive winding T2-3, Resistor R4, Resistance R7, transistor Q2 and transistor Q1, The triodes Q2 and Q1 in the half-bridge circuit of the electronic transformer are not saturated and conductive in depth, and are not burned out due to excessive current, thereby realizing cycle-by-cycle limit current protection. Therefore, the electronic transformer with the output short circuit cycle-by-switch limit current protection circuit can also realize cycle-by-cycle limit current protection.

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