Will This Work?

[Virginia Belle]

I Know that this is a dumb question but, I am curious anyway.

Lets just say that I need an 18 volt DC power source and that the source
has to come from one of those transformers? that plug into the wall and
change AC to DC.

What if I only have two of those transformer devices that are 9 Volts
DC each.

Now, If I cut the insulation off of the ends of both of those
transformers, take the two wire ends from each and twist the 4 ends
together to make two again, plug them in, will THAT make me the 18 volts
that I need?

9 + 9 makes 18 doesn't it?

PLEASE tell me that I have made SOME sense here?

Thank You
Brenda

 

[Rheilly Phoull]

"Virginia Belle" <BRWVABell@webtv.net> wrote in message
news:29304-3FBBCC4A-11@storefull-2237.public.lawson.webtv.net...

I Know that this is a dumb question but, I am curious anyway.

Lets just say that I need an 18 volt DC power source and that the source
has to come from one of those transformers? that plug into the wall and
change AC to DC.

What if I only have two of those transformer devices that are 9 Volts
DC each.

Now, If I cut the insulation off of the ends of both of those
transformers, take the two wire ends from each and twist the 4 ends
together to make two again, plug them in, will THAT make me the 18 volts
that I need?

9 + 9 makes 18 doesn't it?

PLEASE tell me that I have made SOME sense here?

Thank You
Brenda

Sorry, but no you have it wrong (But only with the twisting of the wires)

The two supplies have to be in series to "add".
The + of the first supply becomes 18v +, join the - of the first supply to
the + of the second supply. The - of the second supply is the the - of the
18v.

--
Regards ............... Rheilly Phoull

 

[Geir Klemetsen]

"Virginia Belle" <BRWVABell@webtv.net> skrev i melding
news:29304-3FBBCC4A-11@storefull-2237.public.lawson.webtv.net...

I Know that this is a dumb question but, I am curious anyway.

Lets just say that I need an 18 volt DC power source and that the source
has to come from one of those transformers? that plug into the wall and
change AC to DC.

What if I only have two of those transformer devices that are 9 Volts
DC each.

Now, If I cut the insulation off of the ends of both of those
transformers, take the two wire ends from each and twist the 4 ends
together to make two again, plug them in, will THAT make me the 18 volts
that I need?

9 + 9 makes 18 doesn't it?

PLEASE tell me that I have made SOME sense here?

Thank You
Brenda

This will work:


.-----o-. ,-o-----------.
| )|( |
| )|( 9v AC |
o--------o--o-' '----. | .-----.
AC | | | '----| ~/ |- 18V DC
input | | | .----| / = |-
| | | | '-----'
o-----o--|--o-. ,----' |
| )|( |
| )|( 9v AC |
'--o-' '-o------o----'
|
===
GND
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