power supply....

[lou]

Hi!
Would appreciate some help.

Was thinking of using a car radio at home. Specs read current
consumption 1.5A (at .5W).
The fuse is 5A.

DC power supply should be at least 1.5A but can I go up to 4A without
harming the radio?
Not sure if I would gain any improvement in sound.

Thanks!

Please cc: my email address if possible.

Louis
[email protected]

 

[PeterD]

---
Something's wrong there.

Power is equal to the product of voltage and current, so:


P = IE = 12V * 1.5A = 18 watts


or, for 0.5W:

P 0.5W
I = --- = ------ ~ 0.042A
E 12V

I think the OP's specificatins rate current at .5W of audio output...

Assuming the power supply is regulated and doesn't allow the voltage
to rise significantly as current drops.

Assuming the power supply is regulated and doesn't allow the voltage
to change significantly as audio levels change.

 

[PeterD]

You know, I know, but does the OP know? <g>