ac 24v to ac 16v

[bigphilishere]

howdee do dah all...

i got a little question
i have a power feed @ 240 v
i have a need for 16v ac @ 3 amps
i purshased a 24 vac transformer figuring i would step down the
24vac to 16 vac @ 3 amps...

unlike ac to dc ..which i done ..i thought vac would be easy...
but i dont know or have a curcuit for this
can anyone recommend a easy one!

cheap as chips to make....for 24vac to 16 vac
any ideas ..please let me know

i am keen to continue with the project i am on
thanks phil

 

[Nigel Goodwin]

howdee do dah all...

i got a little question
i have a power feed @ 240 v
i have a need for 16v ac @ 3 amps
i purshased a 24 vac transformer figuring i would step down the
24vac to 16 vac @ 3 amps...

unlike ac to dc ..which i done ..i thought vac would be easy...
but i dont know or have a curcuit for this
can anyone recommend a easy one!

cheap as chips to make....for 24vac to 16 vac
any ideas ..please let me know

Sorry, but you need a 16V transformer, there's no simple way to do it.

What actually is the application?.

 

[Optikon]

howdee do dah all...

i got a little question
i have a power feed @ 240 v
i have a need for 16v ac @ 3 amps
i purshased a 24 vac transformer figuring i would step down the
24vac to 16 vac @ 3 amps...

unlike ac to dc ..which i done ..i thought vac would be easy...
but i dont know or have a curcuit for this
can anyone recommend a easy one!

cheap as chips to make....for 24vac to 16 vac
any ideas ..please let me know

i am keen to continue with the project i am on
thanks phil

The most efficient way is to handle that right in the transformer. I dont know why you didnt do that. Perhaps your 24vac can still work for your application. We dont know because you have not revealed any details.

 

[ericgibbs]

hi Phil,
Depending upon the transformer, it maybe possible to take a few turns off the secondary winding.

As Optikon suggests, details of the transformer and a pic if possible.
[measure the dimensions of the central core, if its a 'E/I' type lamination]

 

[Rolf]

Most transformers.......

hi Phil,
Depending upon the transformer, it maybe possible to take a few turns off the secondary winding.

As Optikon suggests, details of the transformer and a pic if possible.
[measure the dimensions of the central core, if its a 'E/I' type lamination]

The secondary winding is (always?) on the outside. It might be a little trouble but not very difficult to take the correct # of turns off.
Take a few turns off, keep count and measure voltage, then it will be simple to figure out how many total turns to remove.

 

[bigphilishere]

ok


ok the project is ... i am makin a magnetic pulsar
it requires 16vac input...
( the unit was invented by Dr Beck)who is not passed away
the unit uses elctro magnetic wave form to treat the body.
If this sounds good look it up....
he also invented a blood cleaner using small electric current...

i had thought about checkin the winding.....?
but somehow i got into my head the notion to make a mini transfer for
24v ac input to 16v ac

why did i buy the 24 v unit?
i recon i did have in my mind i could change the secondary winding i guess...
although i thought there would be a mini board i could make to step it down...
in any case
could someone please tell how to do it via a schematic

i goin to check the windings access too and see if i can messure the and change the secondary ?

i recon i had in my head that tranformer was a bargain and could work...
given where i am in australia ....16v @3 amps are hared to get..

many thanks for all the replies i got so far...
outstanding!
phil...

 

[bigphilishere]

ok...the secondary winding ,,,forgot that,,,
i could just take a few off.......yep!...change output,,,silly me..
i will measure the effect per turn and know great reminder! it taking a little tape cutting and wire pulling...but i sure it come out
i was not thinkin ...direct...
had convert volts..in the head..i am making a pulsar by late dr beck...shop sold units sell for 600-1000 bucks.. thanks phil

 

[ericgibbs]

hi phil,
A rule of thumb for the turns/volt; is 6 turns/volt for a transformer having a central limb cross sectional of 1 inch sqr.
eg: a csa of 2 inch sqr is 3 turns/volt.

Remember its just a guide, also make sure the remaining secondary turns, when you have done removing the excess turns,
must be tightly wound, else they 'buzz' at the mains freq.

 

[bigphilishere]

many thanks

hey...for some reason i was not thinking recoil...i am glad i asked because it made me rethink...and gave me direction
the 3 turn per volt...was the go..
tested first at the 1 volt drop then i went 21 more turns ....and got a chrisp
16v
thanks to you all
this is the reason i love forums...
people with passion and desire to help...
thanks....
phil

when i done with the proto copy of the pulsar...i may post it ...
so you can see it in finished working order!

 

[Hero999]

Buy a 15V transformer, if it's well enough designed then it shouldn't miss that extra Volt.