Ucd_400 ad 關機有吱吱聲
請問 UCD400 的J4 直 short 落地,關機時,是否會有吱吱聲 ?
Thanks !! :(:?:
Re: Ucd_400 ad 關機有吱吱聲
YES, so, you need to add fast turn off to enable pin.Apply a additional DC voltage (without Cap), only 2 diode + TR, when power is off, the DC voltage of EN pin fast pull to GND, it let the AMP enter to Disable mode, will solve the problem
This problem happen on all UCD series, it is not the bug, impossible to do this function from main DC voltage, because due to the dis-charging time of the large bulk cap.
KK.Ho
請問 UCD400 的J4 直 short 落地,
關機時,是否會有吱吱聲 ?
Thanks !! :(:?: Thanks ! K.K.
Merry X'mas and Happy New Year ! 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 ! can also put a relay between the power rails which will cut off when the power is off Try this simple method
Save alot of money, simple circuit and more reliable.
KK.Ho @ Taiwan
can also put a relay between the power rails which will cut off when the power is off Thanks !
Already done ! Old boy,
Please let me know you are solving the problem or not ?
Thanks
KK.HO It works now !
Thanks !
頁:
[1]