jig Posted July 7, 2006 Share Posted July 7, 2006 Hi have purchased some Haydon housings( a while back) which state they are 24V but I wish to power them with 12Vdc for the heater, can I replace the heater so it can take the 12V input or is it easier to replace with new housings???Any cheap suppliers for quality housings? Link to comment Share on other sites More sharing options...
Matt the Teckie Posted July 10, 2006 Share Posted July 10, 2006 Hi have purchased some Haydon housings( a while back) which state they are 24V but I wish to power them with 12Vdc for the heater, can I replace the heater so it can take the 12V input or is it easier to replace with new housings???Any cheap suppliers for quality housings? Normally the heater inside a housing is simply a piece of wire wrapped around a slab of ceramic. It should make little difference switching to 12VDC instead of 24Vac. The rare exceptions are where the thermostat requires 24Vac. Remenber your Ohm's Law though, if you half the voltage you double the current. Hope this helps Link to comment Share on other sites More sharing options...
amateurandy Posted July 10, 2006 Share Posted July 10, 2006 Remenber your Ohm's Law though, if you half the voltage you double the current. Err, did you miss something out there? V=IR. W=VI. So if you halve the voltage you NEED double the current. Link to comment Share on other sites More sharing options...
SystemQ Posted July 10, 2006 Share Posted July 10, 2006 Hi. Regarding these housing. Generally speaking they do not use a resistor but use a System Q Ltd. Link to comment Share on other sites More sharing options...
Matt the Teckie Posted July 10, 2006 Share Posted July 10, 2006 Err, did you miss something out there? V=IR. W=VI.So if you halve the voltage you NEED double the current. Ohm's law states that the electrical current (I) flowing in an circuit is proportional to the voltage (V) and inversely proportional to the resistance ®. Therefore V=IR, R=V/I and I=V/R Thanks for making my point Hey Paul, thanks for clearing the Thermister thing up.... didn't know that. You learn something every day. Link to comment Share on other sites More sharing options...
jig Posted July 10, 2006 Author Share Posted July 10, 2006 So can I use these of 12V DC or should I sell and try and get hold of ones with the correct voltage?? The exact model number for the housings in question are: TPH1000 Haydon External Heated Housing in 230 volt IP66 Semi cable managed housing High quality pressure diecast aluminum, Powder coated and stove finished Link to comment Share on other sites More sharing options...
SystemQ Posted July 11, 2006 Share Posted July 11, 2006 So can I use these of 12V DC or should I sell and try and get hold of ones with the correct voltage??The exact model number for the housings in question are: TPH1000 Haydon External Heated Housing in 230 volt IP66 Semi cable managed housing High quality pressure diecast aluminum, Powder coated and stove finished Hi. I spotted the 240V a.c in the title but 24V a.c was mentioned in the thread and I thought 24V a.c was the actual heater voltage. If it System Q Ltd. Link to comment Share on other sites More sharing options...
Guest Bodle - Tech Posted July 12, 2006 Share Posted July 12, 2006 I have used a few of the mentioned haydon s. I know a supplier who charges about Link to comment Share on other sites More sharing options...
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