How do you convert 12volts power supply into 24volts?

Answer 1

For AC it is relatively simple from an electrical point of view. All that is required is a transformer. Even if there are other electronic solutions, unless there is good reason. Stick with the idea of a transformer since the only bad part about Transformers, compared to other sophisticated electronic methods are: weight, size, stray magnetic fields but that's about all. They are robust and still very reliable and easy to use. They are available in high power units, they are easy to replace, easy to reconstruct and easy for anyone to understand it's function for later.

Transformers can step-up or down voltage depending on the ratio of windings between the primary (input) and secondary (output). If you have access to a company that wind or make transformers (Most modern city areas have such companies) One can contact them for more advice. What you will need is your primary voltage, secondary voltage, the VA

- VA is the Apparent Power which is the not the real average power since it does not include the power factor. It is only the volt(ac) x amps(ac) of the secondary. The general idea is that the power you apply on the input should be close to the power you get from the output, even though you do have some power losses (Eddie current, heat, ext.)

Then you also need to specify the type of transformer. Normally an E-Core transformer can be used. E-core is a transformer with a metal core with laminations shaped like an "E" to reduce Eddie Currents. More information can be obtained from:

http://en.wikipedia.org/wiki/Magnetic_core

If you need 24Vac for a 100W lamp then the current will be 100W/24V = 4.16A so basically you need a (24V x 4.16A) =100VA step up transformer with 12V primary and 24V secondary in a E-core style. Also note that the primary current will then increase to 8.33A since 100W/12V = 8.33A. It might even be a little bit more but never less. One cannot create energy.

Answer 2

A step-down transformer would be the best option. Use a 24 V transformer with a center tap, that would give you both 24 Volts and two 12 volt lines.

Make sure the transformer can handle the amperage that you're trying to use. It's best to try to not drive the transformer over 75% of its rated capacity.

Answer 3

I assume you are talking about DC power. With a DC to DC converter.

Answer 4

If the voltage is AC then it can be done. The use of a transformer will be needed. This transformer will have a primary voltage of 24 VAC and the secondary output voltage will be 12 VAC.