Search results

  1. B

    12v 1A automatic charger fault, loud buzzing from transformer.

    Hey guys, bought a 12v 1 amp automatic sealed lead acid battery charger yesterday for a project, cut mains plug off and alligator clips off and hardwired it into a project, left in original case. It worked fine for about 10 minutes and a loud buzzing started. I unplugged it and it stopped...
  2. B

    need a thermal fan controller for noisy power supply fan

    Hey guys I have a 13.8 volt, 12 amp power supply in my room running a car stereo hooked to the PC, The fan that was in it failed (50mm) so I swapped it for a new one and it is much noisier than the old one, its still a 50mm, but is a little thicker than the old one and seems to move more air. A...
  3. B

    audio circuit to say "Wikommen" once when car ignition turned on

    hey guys, a friend just bought a BMW, we just fitted 4 new speakers and an amplifier, but for fun he wants a circuit that will play a recording of the word Wilkommen (Welcome in German) through the system when the ignition is turned on. I guess i need to rig up some sort of circuit that will...
  4. B

    running 12v ac device on 12v dc

    Hey guys I'm building a portable music desk which runs off of an optima yellow top car battery. Problem is my mixer has a 12v AC input from a plugpack transformer (wall-wart to the US). I was wondering if running 12v dc straight into it would be fine. The desk has 2 pioneer cd/tuner car stereos...
Top