Voltage reducer wanted

kirkyboy · Post by **kirkyboy** » Sun Sep 18, 2005 12:02 am

ANyone know where to get a 12 volt transformer to reduce to 6 volts

broster · Post by **broster** » Sun Sep 18, 2005 9:12 am

maplins

trev150 · Post by **trev150** » Sun Sep 18, 2005 6:50 pm

Transformers are used to reduce the voltage in AC circuits. If it is DC (i.e. a car) then you will need a regulator or a resistor.

How much current are you running in the circuit?

kirkyboy · Post by **kirkyboy** » Sun Sep 18, 2005 9:04 pm

1.5 amp

trev150 · Post by **trev150** » Mon Sep 19, 2005 12:31 pm

Resistance = Volts Dropped/Current

Resistor Needed = 6/1.5

Resistor = 4ohms

However a regulator would be better and it would need to handle 9 watts.

This is from

Power = VoltagexCurrent

Power = 6 x 1.5

Power = 9 watts

kirkyboy · Post by **kirkyboy** » Mon Sep 19, 2005 4:12 pm

Could you just find the item on maplins website as i had a look and am i bit baffled as to which I need

http://www.maplin.co.uk/Search.aspx?cri ... &source=15

trev150 · Post by **trev150** » Mon Sep 19, 2005 7:48 pm

Sorry mate i can\'t find one in Maplins. Try popping in to a branch and ask some one in person.

What are you running at 6 volts?

kirkyboy · Post by **kirkyboy** » Mon Sep 19, 2005 10:17 pm

I want to run a freeview box for me tellies

trev150 · Post by **trev150** » Mon Sep 19, 2005 10:57 pm

Doesn\'t that run at 230volts?

kirkyboy · Post by **kirkyboy** » Mon Sep 19, 2005 11:27 pm

not mine got a transformer in plug saves buying one off ebay about hundred quid. whereas mine only 30