采用PMP10478的设计,空载时变压器很安静,有负载时变压器有吱吱声像煮开水似的,输出功率越大,声音越大,请问该调该设计电路的哪部分元件的参数?
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采用PMP10478的设计,空载时变压器很安静,有负载时变压器有吱吱声像煮开水似的,输出功率越大,声音越大,请问该调该设计电路的哪部分元件的参数?
重新打样变压器后,空载时没声音,输出功率小时有大的吱吱声,输出功率大的时候声音变小,也不是吱吱声而是滋滋声了。变压器厂家认为是电路问题,请问该从这个设计的哪部分电路入手去做调整?