12 volt transformers/connect car radio in home?

Question

what type of 12 volt transformer do I need to connect my car stereo to 240 volt mains power, to instal the unit in my home and listen to my cd`s/fm radio. any help appreciated ,ta!

Answer 1

You will need a 240V to 12V step-down voltage transformer with a current rating of about 2000mA.

Primary Connection - 240V (Input)

Secondary Connection - 12V (Output) to be connected to a rectifier either Full-wave or Half-wave as you choose.



Use a voltmeter to confirm output voltages (ac & dc) before connecting the power supply to your car stereo.

Answer 2

Wattage is the product (in the mathematical sense) of volts and amps. V x A = W So, a household lightbulb that uses 60 watts requires about .55 amps on household 110volt power. That same bulb will require 5 amps from a 12-volt battery. As mentioned above, the power types (AC vs DC) make a difference in some things, but not in others, so without more information from you, this answer is going to be kind of vague. The length of time that a battery will last while putting out a certain amount of current (amps) depends on the capacity of the particular battery. Your battery should have an Amp-hour (usually labeled "Ah") rating on it. For example, a 20Ah battery will power that 60W bulb for 4 hours or so before the output voltage drops too far.

Answer 3

tobi is right with the exception that the current needs to be more like 5 amperes and 12 volts DC, when in doubt look at the fuse and match it up with the amperage of the supply.