AC/DC Adapters

I'm trying to get an AC adapter for a sega megdrive, would it need to
fit the exact specifications? (9-10V 850mA DC)Im finding it had to find
an adaptor with these exact specifications.

Thanks, Boot.

 

You should stay at the same voltage range but it shouldn't hurt if it had a
higher current rating.

 

The voltage should be kept in the recommended rage but the current rating
can be higher.
Tom

 

http://www.radioshack.com/product.asp?catalog_name=CTLG&product_id=273-1680

Cheers!
Rich

 

I'm trying to get an AC adapter (9-10V 850mA DC)

Always look here first for wall warts:
http://www.google.com/search?q=site:allelectronics.com+Wall+VDC+category-790

As Tom said, you can go higher on the amps.

 

Be aware that if the AC adapter is unregulated you don't want to get
too much higher in current than what it called for. If you do you may
find that the voltage supplied to your load is higher than what the
circuitry is designed to handle.

-wlb

 

---
If it needs to be 9-10V out from no-load to full load, your best bet
would be to buy a regulated supply. Here are a couple from CUI
Stack / Digi-Key that'll work for you:

9VDC ±5%, 1300mA, $15.88 Digi-Key P/N T460-P5P-ND

9VDC ±2%, 1100mA, $19.72, Digi-Key P/N T363-P5P-ND

Don't worry about the current, that's the maximum that can be taken
from the supply without the output voltage going out of spec. If
you take less, the adapter will just run cooler and the output
voltage _might_ rise to 5% or 2% above 9 volts, depending on which
one you get.