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CombatCQB · 02-06-2008, 09:15 AM

Another member here named Shchua drew a regulator schematic to power most 12V LCDs. It'll take 7-14V and output an adjustable 12V. I built the circuit for my LCD and have never had a problem with it. I adjust mine for 12.8V output. The parts together is less than $10 but it does take effort on your part to build. But it is worth the clean power not to mention it survives cranks. If you're interested, I designed a PCB for it and have a few extra.

As for the 5V, a simple linear regulator from radio shack would generate a tremendous amount of heat going from ~14V to 5V at 2A. Here I'd recommend the carnetix too since it is a switching regulator that's more efficient. A little costly, but you save the work of building one.

One source of regulators I've always tried to exploit is surplus or dollar store. All those cheap cellphone car chargers for phones that on one wants anymore. Most of them are simple 5-7V switching regulators rated between 500mA to 900mA. I doubt you'll find one that handles 2A, but it might be cheap to modify one to do so.

02-06-2008, 09:15 AM	#6
CombatCQB Newbie Join Date: May 2004 Posts: 43	Another member here named Shchua drew a regulator schematic to power most 12V LCDs. It'll take 7-14V and output an adjustable 12V. I built the circuit for my LCD and have never had a problem with it. I adjust mine for 12.8V output. The parts together is less than $10 but it does take effort on your part to build. But it is worth the clean power not to mention it survives cranks. If you're interested, I designed a PCB for it and have a few extra. As for the 5V, a simple linear regulator from radio shack would generate a tremendous amount of heat going from ~14V to 5V at 2A. Here I'd recommend the carnetix too since it is a switching regulator that's more efficient. A little costly, but you save the work of building one. One source of regulators I've always tried to exploit is surplus or dollar store. All those cheap cellphone car chargers for phones that on one wants anymore. Most of them are simple 5-7V switching regulators rated between 500mA to 900mA. I doubt you'll find one that handles 2A, but it might be cheap to modify one to do so. Last edited by CombatCQB; 02-06-2008 at 09:17 AM.