a 4.5V 1A adapter for a 4.5V 600mA device ?

[Tim923]

Radio Shack sells 4.5V 1A car DC adapters. My CD player takes 4.5V
600mA DC. I'm pretty sure it is only necessary to match the voltage,
but this is an expensive CD player so I want to be very sure. Is it
safe? I'm a novice, so please no insults.

http://mysite.verizon.net/vze8adrh/news.html (profile) --Tim923 My email is valid.

 

[Tim923]

I will probably just use the rechargable batteries then. I don't want
to take any risk with this player.

http://mysite.verizon.net/vze8adrh/news.html (profile) --Tim923 My email is valid.

 

[John Popelish]

Tim923 wrote:

Radio Shack sells 4.5V 1A car DC adapters. My CD player takes 4.5V
600mA DC. I'm pretty sure it is only necessary to match the voltage,
but this is an expensive CD player so I want to be very sure. Is it
safe? I'm a novice, so please no insults.

http://mysite.verizon.net/vze8adrh/news.html (profile) --Tim923 My email is valid.

Your only risk is that a much below rated load current will allow the
voltage to rise above rated. This is a problem for unregulated
adapters, which many are. I doubt that a little extra voltage will
cause a problem (say, less than a volt) but you can't measure that
without actually powering the unit at least briefly.
You could test the supply with a light load (say, half of the player
rated current, with a resistive load) to get some idea what voltage
rise you are risking.

--
John Popelish