Direct current (DC) is the one directional or unidirectional flow of electric charge.An electrochemical cell is a prime example of DC power. Report a problem Suggest a … You may be able to run it with an inverter but not for long, if you’re thinking of an ordinary car battery. It uses the LM7805 and LM7812 voltage regulators to provide the correct voltage so it's good for about 1 amp. Wilson Electronics 859923 Cellular Booster Accessory (6 Volt-12 Volt Hardwire DC Power Supply Kit) Specifications: Mobile Power Supply Converts 12v Dc To 6v Dc For Applicable Wilson Vehicular Cellular Amps Hardwire Kit Allows For Direct Power Connection To Vehicle Battery Or Ignition Compatible With Wilson Mobile Wireless & Mini-mobile Amplifiers-801201 & 801230 2a Fuse Dimensions of ATX-12 computer power supply with 12 volt input: Advantages: DC input PSII Form Factor ATX-24 pin or ATX-12 Computer Power Supply. Shop for enclosed switching, linear, and benchtop 12 volt power supplies. 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These two 12V ac supplies are 180 degrees out of phase with each other, thus making it easy to derive positive and negative 12 volt dc power supplies from them. I needed a 12 volt power supply for my project, the SSTC (Solid State Tesla Coil), and also made this instructable because it might be use full to someone… 98 Main Results. SGS Thomson’s IC LM338 in conjunction with a very few passive components is able to produce voltages right from 1.2 to 32 volts. Screw Terminal Connectors Electronic Overload Protection w/ Auto Reset Short Circuit Protection Fuse Protected Heavy Duty Cabinet & Heatsink with Anti-Skid Rubber Feet Dimensions: 7.48''L x 4.92''W… But trying to buy one from the store is a little too expensive? I have a battery charger that connects to the car battery. The advantage of using a centre tapped transformer is we can get the both +12V and -12V dc supply … I've been through a number of expensive batteries. 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