two 9v ac adapter with different mA's

[TheKeith]

Just curious if the mA output for an ac adapter makes a big difference
if the voltage is the same? I have two 9v ac adapters, one with 500mA
and the other with 800mA. I believe the two connectors are the same
size. Are they interchangeable? Thanks.

 

[Tom Biasi]

Just curious if the mA output for an ac adapter makes a big difference if
the voltage is the same? I have two 9v ac adapters, one with 500mA and the
other with 800mA. I believe the two connectors are the same size. Are they
interchangeable? Thanks.

The 500mA can supply up to 500mA and the 800mA can supply up to 800mA.
If your load is less than 500mA you could consider them interchangeable for
most practical applications.
Tom

 

[Pj]

The 500mA can supply up to 500mA and the 800mA can supply up to 800mA.
If your load is less than 500mA you could consider them interchangeable for
most practical applications.
Tom

Yepp, but where was the original post?

If the total load is getting up close to 500mA I would be a little
skeptical of using the 500mA supply without some additional filtering.
It just might cause some problems. Seems like those adapters give some
cushion so they don't have to strain under the load.

Pj

 

[Tom Biasi]

Yepp, but where was the original post?

If the total load is getting up close to 500mA I would be a little
skeptical of using the 500mA supply without some additional filtering.
It just might cause some problems. Seems like those adapters give some
cushion so they don't have to strain under the load.

Pj

The original post is quoted in its entirety.
There would be no filtering, the OP said it was an AC supply.

Tom

 

[TheKeith]

The original post is quoted in its entirety.
There would be no filtering, the OP said it was an AC supply.

Tom

thanks guys--for some reason the 800 did not work for my dc guitar amp
which has the 500mA supply. The plug seemed to have fit though--wonder
what happened?

 

[Ralph Mowery]

thanks guys--for some reason the 800 did not work for my dc guitar amp
which has the 500mA supply. The plug seemed to have fit though--wonder
what happened?

Even if the plug fits, the plus and minus may be reversed if the output is
DC instead of AC.

 

[Tom Biasi]

thanks guys--for some reason the 800 did not work for my dc guitar amp
which has the 500mA supply. The plug seemed to have fit though--wonder
what happened?

Your original post said "AC" adaptors. If they are DC instead my answer may
have been a little different.

Center plus or center minus?
Regulated or filtered?
No load vs. full load voltage?

Regards,
Tom

 

[TheKeith]

Your original post said "AC" adaptors. If they are DC instead my answer
may have been a little different.

Center plus or center minus?
Regulated or filtered?
No load vs. full load voltage?

Regards,
Tom

yeah sorry, both are AC to DC adapters--i thought that was implied by
the word "adapter" but I guess I was wrong. Sorry, I'm not too familiar
with this stuff.