In my car I have a bluetooth phone kit that plugs into an auxiliary cigar lighter socket that is controlled by the ignition switch, which means it turns off when you turn the key to the start position. I would like to put an electrolytic capacitor across the terminals of the socket to give the phone kit enough juice to keep it powered up during the time it takes to start the engine but I'm not sure how they are rated, ie: a high number uF a lower number. I know the current that the kit draws will be needed to get the right capacitor for the right time but I haven't checked this yet, and I wouldn't the formula to work it out any way so I was going to go for the biggest. Any advice would be appreciated Regards Trevor smith
- posted
17 years ago