running a car stereo in a house on AC current?

[MrXray]

I am planning on using a car stereo/mp3 player on household AC current.... I intend on running the pre-amp signal through a mixing board so I will not be utilizing the on board amp in the radio for sound.......what size AC >DC power supply will I need to power the radio....i know they sell various transformer plugs at radio shack...but they come in different AMP ratings.....i don't want to get the wrong one...

 

[Someone Somewhere]

You'd probably be OK with ~1.5A @12VDC. More like 3-4A if you want to use the CD drive; they tend to have very high spinup currents.

 

[instrument]

What kind of supply do you intend to use - a linear or switching one? If linear, then it must has a very good smoothing stage and be with capacitors 470nf/1kV in parallel to each of the rectifying diodes together with a choke. That's because of the ringing effect when it's used in such applications as players, tranceivers, amps and other devices which require perfect oscillogram of the signal from the supply. Voltage might be higher than 12V, up to 15 for example, the player has its own stabilizer inside. The voltage in the car grid is 14V or even a few more (14.4V), so don't worry if your supply doesn't give exatly 12V. In fact voltages up to 18V are applicable.
The output power of the supply depends on the power, consumted by the load, its power is on its label. There must be also a 20% reserve, because using a power supply on 100% is a risкy business.

 

[Nilesh Gosavi]

I am planning on using a car stereo/mp3 player on household AC current.... I intend on running the pre-amp signal through a mixing board so I will not be utilizing the on board amp in the radio for sound.......what size AC >DC power supply will I need to power the radio....i know they sell various transformer plugs at radio shack...but they come in different AMP ratings.....i don't want to get the wrong one...

 

[Nilesh Gosavi]

Use any computer desktop Switch mode power supply to run the car stereo. It gives contineus 12 volt power. I did it.