Hi Guys,
I hope that I am posting this in the right place. I posted in the arduino forum already but it was not answered and swept away by the vast amount of post per day there. So I thought this forum might be the better place for this question anyways... however I hope I am not breaking any rules by reposting the same problem here.
I want to use this Peltier
http://uk.rs-online.com/web/p/peltier-modules/4901395/
with this power supply
http://uk.rs-online.com/web/p/embedded-switch-mode-power-supplies-smps/7002381/
and control it with an arduino.
so my research of the depth of various forums so far points me to High power
H-bridge motor drivers. (or just the chip they employ?? as at least on RS they only sell those and not the drivers i find on ebay..)
however I am not good enough with electronics to assess what exactly I need. I have a vague idea that the bridge should be chosen quit strictly to my appliance to not loose a lot of power or fry my circuit and as Peltiers are quit different things than dc motors I am not sure if I can just take the motor drivers one to one (or if I for example should use a capacitor in paralell to my peltier, but what effects has that on the h bridge? and so on)...
what the peltier will need to do is to ramp a temperature in a very precise way, I don't really know yet how often that means switching between heating and cooling or freewheeling but i think the more flexible on that end the better for temperature control.
So I think I have posted all the relevant info now, there is some more project description in the arduino forum post but I don't think it absolutely necessary stuff. here the link for hte interested though: (http://forum.arduino.cc/index.php?PHPSESSID=o2rtjjkjbr5efjlfukju3vhlu2&topic=189913.0)
I would be very thankful for any help.
Already a "Buy this thing for these reasons" with a link would be enough
(although i might come back with a sketch of how i plan to connect it up before actually doing things )
All the best
sven
I hope that I am posting this in the right place. I posted in the arduino forum already but it was not answered and swept away by the vast amount of post per day there. So I thought this forum might be the better place for this question anyways... however I hope I am not breaking any rules by reposting the same problem here.
I want to use this Peltier
http://uk.rs-online.com/web/p/peltier-modules/4901395/
with this power supply
http://uk.rs-online.com/web/p/embedded-switch-mode-power-supplies-smps/7002381/
and control it with an arduino.
so my research of the depth of various forums so far points me to High power
H-bridge motor drivers. (or just the chip they employ?? as at least on RS they only sell those and not the drivers i find on ebay..)
however I am not good enough with electronics to assess what exactly I need. I have a vague idea that the bridge should be chosen quit strictly to my appliance to not loose a lot of power or fry my circuit and as Peltiers are quit different things than dc motors I am not sure if I can just take the motor drivers one to one (or if I for example should use a capacitor in paralell to my peltier, but what effects has that on the h bridge? and so on)...
what the peltier will need to do is to ramp a temperature in a very precise way, I don't really know yet how often that means switching between heating and cooling or freewheeling but i think the more flexible on that end the better for temperature control.
So I think I have posted all the relevant info now, there is some more project description in the arduino forum post but I don't think it absolutely necessary stuff. here the link for hte interested though: (http://forum.arduino.cc/index.php?PHPSESSID=o2rtjjkjbr5efjlfukju3vhlu2&topic=189913.0)
I would be very thankful for any help.
Already a "Buy this thing for these reasons" with a link would be enough
(although i might come back with a sketch of how i plan to connect it up before actually doing things )
All the best
sven