Indoor Fan speed controlling

[gr33n_giant]

Hi All, as per title I am looking to control my fan speed and it looks like 2 options
Cheap -a rheostat based version, think lounge lighting dimmer switch which (after reading) hums and can build up heat
Expensive - a voltage controller that lowers power going to fan, no hum
Shops I have looked at are £100+ and always looking for a bargain have found this
http://uk.farnell.com/multicomp/mccmv-1-5x-1/transformer-variable-1-5a/dp/1824810

Is it the same thing but 30 quid cheaper? Has anyone used one of these?
Input needed please before I spend more of my hard earned!
Thanks for looking.
Happy growing
GG

 

[Red eyed c]

How about something like this mate http://www.fantronix.com/acatalog/Fan_Speed_Controller_6_Amp_-_FSC-6.html

Or this mate,its pretty pricey but should do the business http://www.greenshorticulture.co.uk...ol/STR-Voltage-Stepping-Fan-Speed-Controller/

 

[gr33n_giant]

Hi, if you take a look at the inside picture it looks like a beefed up rheostat, it slows by impedance not by reducing voltage. I may be wrong though! Thanks for the suggestion.
Cheers
GG
Found this on same site
http://www.fantronix.com/acatalog/Silent_Fan_Speed_Controller_-_1-Phase.html
Thanks again
GG

 

[LittleBadger]

I am using one of these -

http://www.ecotechnics.co.uk/index_htm_files/495.png

not the cheapest,but worth every cent! a fantastic product.

 

[gr33n_giant]

Or this mate,its pretty pricey but should do the business http://www.greenshorticulture.co.uk...ol/STR-Voltage-Stepping-Fan-Speed-Controller/[/QUOTE]

Exactly what I wanted, looks like my original one has more fine tuning possible both the STR and Variac look like they do it in 20% steps. Great find, been looking all over even on greens! Wood for trees springs to mind, or too baked.
Cheers
GG

 

[LittleBadger]

Sorry - bad link!

try this - http://www.ecotechnics.co.uk/fan_speed_contoller.htm

 

[Duck Commander]

what sort of fan are you running just asking coz i know you can buy a tt inline fan with temp controler for around £60:smokebuds: they have speed and temp control knobs http://www.thegrowersshop.co.uk/tt-in-line-mixed-flow-fans-with-speed--temp-control-2134-p.asp

 

[gr33n_giant]

Sorry - bad link!

try this - http://www.ecotechnics.co.uk/fan_speed_contoller.htm

Does it make your fans hum? Just got rid of the unis co2, am only an amateur and it needed a dialled in environment not a tent in the spare room!
Cheers
GG

 

[gr33n_giant]

what sort of fan are you running just asking coz i know you can buy a tt inline fan with temp controler for around £60:smokebuds: they have speed and temp control knobs http://www.thegrowersshop.co.uk/tt-in-line-mixed-flow-fans-with-speed--temp-control-2134-p.asp

Cheers, it sounds almost too good! Have you used one? I have bought cheap before and 99% of the time had to buy again! I have a 6 inch Chinese RV currently it's the 1% of cheap still going!
Thanks
GG

 

[LittleBadger]

Does it make your fans hum? Just got rid of the unis co2, am only an amateur and it needed a dialled in environment not a tent in the spare room!
Cheers
GG

No - no hum at all. perfect controll of the difficult environment in which I grow.