AC/DC Adapters

[Boot]

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.

 

[Tom Biasi]

"Boot" <firesuite@hotmail.com> wrote in message
news:1123836647.469346.321160@g47g2000cwa.googlegroups.com...

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.

The voltage should be kept in the recommended rage but the current rating

can be higher.
Tom

 

[Rich Grise]

On Fri, 12 Aug 2005 01:50:47 -0700, Boot wrote:

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.

http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=273-1680

Cheers!
Rich

 

[JeffM]

I'm trying to get an AC adapter (9-10V 850mA DC)
...find an adaptor with these exact specifications.
Boot

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.

 

[Rodney]

"Boot" <firesuite@hotmail.com> wrote in message
news:1123836647.469346.321160@g47g2000cwa.googlegroups.com...

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.

 

[Bill]

On 12 Aug 2005 01:50:47 -0700, "Boot" <firesuite@hotmail.com> wrote:

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.

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

 

[John Fields]

On 12 Aug 2005 01:50:47 -0700, "Boot" <firesuite@hotmail.com> wrote:

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.

---
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 ą5%, 1300mA, $15.88 Digi-Key P/N T460-P5P-ND

9VDC ą2%, 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.

--
John Fields
Professional Circuit Designer