ghostman11
Well-Known Member
we use a couple of vellemen thermostats (mk138) Velleman nv it might help if you click on the assembly manul to see the circuit. (sorry i cant do circuit diagrams or very much on here at the mo as i need to sort out pc
) would i be right in thinking that in that circuit only one side of a quad comparator is being used? if thats so would it be possiable to use both sides in a simillar circuit so i can have 2 sensors and 2 relays, both would use the same pot.
this is not going to be used to control tempreture but to operate a couple of fans.
2nd question on the parts list it mentions R8 as being 0Ω, however i cant see it on the circuit diagram??? what does it do and where would it go?![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
3rd and final question.........i have tried to copy this circuit in both proteus and multi sim, but when i tried to run a simulation it just keep coming up with errors. i was hoping to play with the circuit on proteus so i could play with the values etc
sorry if theese are stupid questions but any ideas would be appreciated!
BTW i am not hopefuly looking for someone to come up with a circuit for me just help me get over the first couple of obstacles![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
this is not going to be used to control tempreture but to operate a couple of fans.
2nd question on the parts list it mentions R8 as being 0Ω, however i cant see it on the circuit diagram??? what does it do and where would it go?
3rd and final question.........i have tried to copy this circuit in both proteus and multi sim, but when i tried to run a simulation it just keep coming up with errors. i was hoping to play with the circuit on proteus so i could play with the values etc
BTW i am not hopefuly looking for someone to come up with a circuit for me just help me get over the first couple of obstacles