Thread: Turn-off pop question

the capacitor when it gets power charges up..... (sorta like a battery).... when u cut the power to the amp the capacitor will discharge into the amp's turnon lead to keep the amp running for a little longer. The diode stops the discharging from going back into the rest of the cars electricial system and discharging quicker and most likely not keeping the amp going.....


you can do a similar thing with a relay, but the relay's coil will discharge the capacitor quicker than a amp's turn-on lead..... so a larger capacitor would be need to achive the same turn on times....

What magnetik said is correct. What you will want to do in this case is to use a relay on the power line for the psu and put the diode in the coil power line. When you turn off the switch it should keep the relay energized for a bit.. altho the time could be VERY small (read un noticeably fast ) depending on the on the size of your cap. If you use this relay then you shouldent have to have the diode or the connection to frame. Just put the cap across the coil leads of the relay making shure to observe the polarity because the switch will isolate the positive side of the cap when it is turned to the off position. NOTE: polarity and voltage handeling of the cap is very important in this case make shure that both are correct for this application the cap you will probally want to be 16v.