Voltage Controller

[hoppy]

maheel » Thu Nov 17, 2011 10:02 am
make sure you get the right pot from them as well

i ordered a 250 k pot is that what you are using


Hoppy

[maheel]

maheel » Thu Nov 17, 2011 10:02 am
make sure you get the right pot from them as well

i ordered a 250 k pot is that what you are using
Hoppy

i got the 250k 1Watt pot from them, they had to manually check stock or something on their system as did not show online (was 6 months ago)

on page 2 under "specs"
http://docs-asia.electrocomponents.com/ ... 02e5aa.pdf

i used some bits of wire from a PC for the plug as it had very fine legs on the pot

[hoppy]

Potentiometer,Cermet,12mm,1.0W,149,lin,250k

this is the one i ordered maheel i think it is the same

Cheers Hoppy

[maheel]

Potentiometer,Cermet,12mm,1.0W,149,lin,250k

this is the one i ordered maheel i think it is the same

Cheers Hoppy

looks like mine :)

[Moonshine_Nova]

Hi Maheel,

Thanks for the write up and the direction to this page. I was just wondering in your last pic of the controller the wire's I have high lighted do they go the the varible resistor/ controller for the electrical output???

Cheers

[maheel]

Hey M Nova

they sure do, they go to the pot that is in the lid, you can see the pot in another post on page one

i used a plug from a PC and the wires, i think it was a PC cooling fan plug ? not sure but it fitted nice :)

[Moonshine_Nova]

Awsome, Thanks for the info. It's time to get into gear and get some thing built.

[hoppy]

Yep you were on the mark McStill ordered my PSR 11pm 16/11/11 on line it was in my hand 10-30 am 18/11/11 Shit Hot Service :crazy: put controller together this arvo ,tested on bedside lamp first :pray: no sparks flew out the arse :roll: next test 2200watt jug :pray: kept rolling boil for two hours everything AOK :clap: .Hey maheel i found one of those small plugs for 250K pot in an old fax machine i was a bit worried about the size of the leads they were about as thick as a piece of string but all ok :geek: Thanks once again for your pics & info of your build :text-thankyoublue: Have to put another brew up now and learn how to fly it on the boiler :think:

Cheers For All Your Help Hoppy :mrgreen:

[peterl1981]

hi guys i'm wanting to build a voltage controller for my home brew kettle boiler, i have a 4800w element, i wanto have some controll over the boil,

so it looks like this is the thing for the job..

Dose anyone have a parts list, to make this controller??

cheers
lads

[maheel]

PSR-25
250k 1watt pot
heat sink of suitable size
heat sink fan and possibly power supply for fan
heavy duty power cabling (your especially going to need it for 4.8kw)
power plugs of your choice (you might want to consider those screw together 3 phase style plugs or hard wiring it all together )
earthing lugs on boiler
"power on light"
amp meter
suitable sized hobby box to install it all in

[peterl1981]

thanx maheel

where is the best place to get all the stuff, will any electrical supplier have them or even jaycar?

is there a diagham on this site anywhere..

sorry i'm new to this site..

[maheel]

http://australia.rs-online.com/web/p/pr ... 4E4F4E4526

this is the PSR you want, you need to check that 25 amps is enough for 4800watss in your circumstances
they spec sheet has the pot you need, talk to RS via phone to confirm the right one

i used a 2nd hand heat sink from a PC motherboard and also a PC fan from my shed
i used a mobile phone charger to run fan from my shed

power cable and plugs from hardware or electrical wholesaler
power on light from jatcar etc (or other)
hobby box - i used tupperware type thing from kitchen

amp meter - i dont have one and am unsure of best model

have a good read back over the thread and look at the pics, they are fairly simple.

i cannot tell you how to build it really as if you die using it then your estate might sue me.... better to get a sparky / elec tech to help you a bit
my posts are purely for information only.... seek professional advice thats my disclaimer :)


oh and welcome to the site, forgot to say that before. (i am a ride prick :D )

[peterl1981]

hi sorry to be a pain
but i carnt seem to be able to find the 250k 1 watt pot, i can only find .25watt ones
and do i need a f175 filter for the psr25?

[hoppy]

http://australia.rs-online.com/web/p/tr ... t/4848610/
THIS THE ONE I USED ON MY BUILD PETER


HOPE THE LINK WORKS CHEERS HOPPY

ITS THE SAME AS MAHEEL USED

[maheel]

do i need a f175 filter for the psr25?

thanks Hoppy :)

i dont have the filter and there is discussion about it on other sites, i have never noticed and interference and I tried to get it to effect my radios but no effect....

so i dont really know if it's needed for our use ?

[devotus]

hey 8 ball did ya test that little doova from ebay?

[8-ball]

Nah not yet got it last week still havent done it been busy with work and trying to find the right house to buy ive also got a fridge controller here that i was meant to do last week for my brother

[8-ball]

to add to that just hooked it up it will keep a rolling boil in my kettle (2.4kw ) but the heat sink is live on it :oops: it makes a buzzing sound but it seemed to work fine will do further testing some time soon but for cheap and easy it does the trick so far

[maheel]

) but the heat sink is live on it :oops: i

bloody hell for all the cheap triacs they use a "live" one.... makes them dangerous for the most part.

if you get time can you estimate how much heat the heatsink is putting off, i reckon some cooling should sort it and help it last.

hey 8-ball your a typical sparky leving all the little bits of copper wire in the box :angry-banghead: lol

[8-ball]

its just my test box ill have a nice clean neat one for the real product