5W==5S
=5*5/0.5/(220^2-180^2)
=25/0.5/(220^2-180^2)
=50/(48400-32400)
=50/16000
=0.003125F
=3125μF
风扇的1.5电容就那么大个头了,还没算漏电,而且又要升高整个电路元件耐压
=5*5/0.5/(220^2-180^2)
=25/0.5/(220^2-180^2)
=50/(48400-32400)
=50/16000
=0.003125F
=3125μF
风扇的1.5电容就那么大个头了,还没算漏电,而且又要升高整个电路元件耐压