12v

Here is spec fpr 5 mm led The resistor = 470 ohm 1/4W. The LED voltage = 3.0v - 3.4v The LED amp = 20mA If the adapter output = 1000mA then it is sufficient to connect more than 40 LED together either in series or parallel. How I do that any wiring diagram link is very appreciated

the constant 12v does not have power so the radio has memory. the only way i can get it to work is if i put the yellow wire on the red with the ignition on. but once i turn it off the factory settings go back into the aftermarket radio. and i have tested the wire and theres no power. i have...

together to supply one 12v integrated circuit just in case on power supply failed what would the circuit look like? I would wish to not damage the integrated circuit.

its 16v Normal Operating Voltage and 24v Max Surge Voltagecar capacitor . im not sure if it would in my car cause the battery is 12v. i dont want to fry nothin.

The 10v rechargeable battery is for Lego Mindstorms. I didnt buy an additional transformer because I have a transformer which already has a 9v or 12v dc output.

I have this amp http://www.amazon.co.uk/MOTORCYCLE-OUTPUT-POWER-STEREO-AMPLIFIER/dp/B003M7JEA0/ref=sr_1_6?s=electronics&ie=UTF8&qid=1283602140&sr=1-6 but it cant really handle bass, can anyone recommend a amplifier that runs off 12v for under £45 that can handle its bass. Thanks Luther

I have this amp http://www.amazon.co.uk/MOTORCYCLE-OUTPUT-POWER-STEREO-AMPLIFIER/dp/B003M7JEA0/ref=sr_1_6?s=electronics&ie=UTF8&qid=1283602140&sr=1-6 but it cant really handle bass, can anyone recommend a amplifier that runs off 12v for under £45 that can handle its bass. Thanks Luther

I'm installing an aftermarket key less entry system in a 2009 Chevrolet Cobalt LS 2-Dr. Does anyone know on a constant 12v source for this car. (power delivered when key is NOT in ignition)? Thanks!

I am in the process of designing coolers with 12v waterproof boat stereos built in. I am currently using 55ah optima deep cycle batteries which work well, but a new application requires less weight and less play time per charge. I've seen the rechargeable 12v sealed lead acid batteries around...

I am in the process of designing coolers with 12v waterproof boat stereos built in. I am currently using 55ah optima deep cycle batteries which work well, but a new application requires less weight and less play time per charge. I've seen the rechargeable 12v sealed lead acid batteries around...

...plugged in a power inverter.? I think the power inverter drew to many amps, and blew a fuse but I can't find the fuse block to check. Any help?

Will that much of a difference in voltage from the recommended voltage efficiency of this 12V DC motor affect it much at all over time? OR are the effects negligible? For larger voltages and larger DC motors I understand this would obviously be crucial for operation over long periods of times...

it is a ac adaptor for a external drive rated 12V 1.5A busted, the available i'm seeing aftermarket in my place is a 12V 1A. will this work or not? should I get the same or higher?

Or can it handle any VAC at all? I'm not sure, but I thought that a switch was just a mechanical way of closing a circuit. It has an LED, and it's rated at 12V DC (and some amperage, I forgot what). I need to know what V AC it can handle. How do I know?

i have a new central locking kit and it says i need to connect it to a 12v source i have a vauxhall asrta r reg

This pocket bike takes a rechargeable 12V battery, can I plug the bike directly into the wall outlet using a 12V battery charger so that the bike pulls power directly out of the wall? Just to test if my battery is the cause of the bike not starting? If not, how would I check If the original...

...12v 1200mA output? My d-link router's adapter got burned yesterday. It's a 12v 1200mA 14.4vA. I wasn't able to find it in the market. I only got 12v 1000mA. Will it affect the router's performance?

what's the best voltage batter? Charging a 9.6 battery with a different voltage ac/dc adapter.

gentlemen, is there such a software where I can draw my own electrical diagram that will include, switches, relays, fuses, diodes etc. and then at the end to virtually test the circuit on the screen before I start my wiring? There is something similar, but for AC voltage it is called "The...

I bought a media player that came with a UK adaptor, but I need a US one, and the UK adaptor says 5V DC 2amp, although I have some extra adaptors one of which says 12V DC, will it work? The 12V DC adaptor I have says output 12V DC 500mA, will that work?