Is this camcorder AC adap. dead dead with a few volts output

[David Askari]

its a sony camcorder ac adapter with a good fuse. No led,s or sound
or anything to indicate activity. But a volt meters shows a few
volts. I read the sam faq on swithable adapters but did I miss the
area regarding dead but good fuse and a few volts?

 

[jtech]

"David Askari" <davidlaska@aol.com> wrote in message
news:e42406d1.0404031248.19681708@posting.google.com...

its a sony camcorder ac adapter with a good fuse. No led,s or sound
or anything to indicate activity. But a volt meters shows a few
volts. I read the sam faq on swithable adapters but did I miss the
area regarding dead but good fuse and a few volts?
Try to get a reading the voltage with it connected to the camera. It may

need to be loaded to develope its voltage. If its still low, then yes its
dead.

 

[David Askari]

"jtech" <toomuch@spam.net> wrote in message news:<jANbc.3330$Em4.3088@fe03.usenetserver.com>...

"David Askari" <davidlaska@aol.com> wrote in message
news:e42406d1.0404031248.19681708@posting.google.com...
its a sony camcorder ac adapter with a good fuse. No led,s or sound
or anything to indicate activity. But a volt meters shows a few
volts. I read the sam faq on swithable adapters but did I miss the
area regarding dead but good fuse and a few volts?
Try to get a reading the voltage with it connected to the camera. It may
need to be loaded to develope its voltage. If its still low, then yes its
dead.

its dead but I have a compat and dell adapter rating over 2 amp and
19volt. If I use a ceramic wound resister to drop it to7.2, would it
be that simple? I am not sure yet how to use the ohms law but my
numbers I need would be the current the camera would draw and its
volts for the target output and the volts of the new switching
adapters. I won,t use the amperage in calcation from the ac adapter.
I seem to remember its 3 numbers for working the resister ohms. Maybe
I will try to set it up like the formola I used for the led arrays I
used to make for 12volts.
mainly beside the ohms is there any other things that would go out of
whack.

 

[exray]

David Askari wrote:

"jtech" <toomuch@spam.net> wrote in message news:<jANbc.3330$Em4.3088@fe03.usenetserver.com>...

"David Askari" <davidlaska@aol.com> wrote in message
news:e42406d1.0404031248.19681708@posting.google.com...

its a sony camcorder ac adapter with a good fuse. No led,s or sound
or anything to indicate activity. But a volt meters shows a few
volts. I read the sam faq on swithable adapters but did I miss the
area regarding dead but good fuse and a few volts?

Try to get a reading the voltage with it connected to the camera. It may
need to be loaded to develope its voltage. If its still low, then yes its
dead.


its dead but I have a compat and dell adapter rating over 2 amp and
19volt. If I use a ceramic wound resister to drop it to7.2, would it
be that simple? I am not sure yet how to use the ohms law but my
numbers I need would be the current the camera would draw and its
volts for the target output and the volts of the new switching
adapters.

Problem is that the current being drawn by the unit may vary dependent
on which features are running, etc. That causes the voltage drop to
vary thru a dropping resistor and it may not be stable enough to operate
properly.

However, you could use the xfmr if you were to build up a simple
regulator circuit. I think getting a proper adapter would be easier and
present less risk.

I won,t use the amperage in calcation from the ac adapter.

I seem to remember its 3 numbers for working the resister ohms.

The formula R=E/I resistor value = voltage drop required (11.8)
divided by the current draw (unknown). So you see the resistor value is
totaly dependent on the current draw of the unit.


-BM

 

[David Askari]

Problem is that the current being drawn by the unit may vary dependent
on which features are running, etc. That causes the voltage drop to
vary thru a dropping resistor and it may not be stable enough to operate
properly.

You are of course correct and I should have seen that issue of loads.
It,s easily seen by the lenght of battery life depending on what the
camera is made to do. But thanks for the reminder to prevent me from
doing it(and damaging something I want to fix)