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239vac to 9vac power supply.need help.

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illu5i0n

New Member
Hi people,I'm new here.I need to build a power supply that transforms the socket voltage( 230Vac) to 9vac at 2000mA currency.

I'm kinda newbie to electronics (second year of studies at my university) and i dont know how exactly to build it.

I suppose that it will not need any inverters etc. and bridges because it only lowers the voltage.

If anyone here can guide me to build it,i will appriciate it very much.:)
 

ericgibbs

Well-Known Member
Most Helpful Member
Hi people,I'm new here.I need to build a power supply that transforms the socket voltage( 230Vac) to 9vac at 2000mA currency.

I'm kinda newbie to electronics (second year of studies at my university) and i dont know how exactly to build it.

I suppose that it will not need any inverters etc. and bridges because it only lowers the voltage.

If anyone here can guide me to build it,i will appriciate it very much.:)
hi,
You need a 230Vac to 9Vac transformer, rated at 20 to 25VA, for 2Amps.

Whats you location.?
 

illu5i0n

New Member
Im from Greece.why? :p

by the way how much does this transformer cost?i will ask it at a shop with those specs?
 
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ericgibbs

Well-Known Member
Most Helpful Member
Last edited:

illu5i0n

New Member
thank you very much:) (but this one supplies only 1.1 Amps hmmm)

so now all i have to do is buy one of these and make an additional circuit?does it need any resistors or capacitors? and fuses?
 
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Hero999

Banned
thank you very much:) (but this one supplies only 1.1 Amps hmmm)
It has two 1.1A windings that can be connected in parallel to give 2.2A.

so now all i have to do is buy one of these and make an additional circuit?does it need any resistors or capacitors? and fuses?
No additional circuit is required.

If you're concerned about short circuits then you can add a fuse or polyswitch to the secondary.
 
Hello
I am also a new user I have join this site today with my very small experinc I think That your device can be formed by simply a step down transformer if you don't have to chang it into dc you don't need rectifire.Reply me I am online
___
{N}
 

ericgibbs

Well-Known Member
Most Helpful Member
thank you very much:) (but this one supplies only 1.1 Amps hmmm)

so now all i have to do is buy one of these and make an additional circuit?does it need any resistors or capacitors? and fuses?
hi,:)
Perhaps it would be best, if you told us what the 9V is going to power, what is its purpose.?
 
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illu5i0n

New Member
it's going to power an effects pedal board for guitar.i think that the pedalboard has it's own fuse..but i think it wouldn't be a problem if i added an extra fuse at the power supply.:)
 

ericgibbs

Well-Known Member
Most Helpful Member
it's going to power an effects pedal board for guitar.i think that the pedalboard has it's own fuse..but i think it wouldn't be a problem if i added an extra fuse at the power supply.:)
Are you sure the pedal board will accept 9V 'ac' and it does not require 9V 'dc'.?
 
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