再請教 K.K._ Ucd_400 ad 關機有吱吱聲

thomasfw · 發表於 2006-12-23 10:40:03

Dear K.K.
Do you mean to apply a DC voltage to "J4 & Ground" ?
My transformer has an additional "12 X2 " (AC)
Please show me how !!

Thanks !

kk_ho · 發表於 2006-12-24 01:39:44

thomasfw · 發表於 2006-12-26 23:44:00

Thanks !
Already done !

kk_ho · 發表於 2006-12-27 00:23:25

Old boy,

Please let me know you are solving the problem or not ?

Thanks
KK.HO

thomasfw · 發表於 2006-12-27 15:19:27

It works now !
Thanks !

ackcheng · 發表於 2007-5-25 22:44:45

Thanks. Turning the module off is OK. But the problem is turning it on. When /on is pull to GND, I can hear a loud "pop" 1 -2 seconds later.

kk_ho · 發表於 2007-5-25 22:51:51

Did you place a large cap in the EN pin ?

ackcheng · 發表於 2007-5-26 00:38:09

I did not put any caps in the EN pin

		自動登錄	找回密碼
密碼			註冊

Re: 再請教 K.K._ Ucd_400 ad 關機有吱吱聲