So I'm putting the previous project on hold for a bit and going to try this cooling system thing in a different approach ?
Components on hand:
LM311
VDO temperature sensor (P/N: **broken link removed**) (A NTC sensor, 17000 to 10 ohm))
The Thermostat is open at 78'C
The Cooling Fans turn on at 96'C
The Pump in my Mind should turn on around 80-85'C
With that said, and with the sender above, that would be a 70-60 ohm resistance
A built up a circuit on my bread board, and technically it is working which is nice, but i'm also using 2.5K Pots so the adjustment in the lower Range isn't that fine. also using a 10K resister on both the Reference and "input" voltage dividers. All testing had been using a 12V power supply
Still trying to figure out the Hysterysis for it too, and how to implement it to the LM311 since it has it's own built in Transistor (open collector)
Questions i have
1) Now the sender itself is also hooked to the coolant temperature gauge (Coil style? +, -, S terminals) so i'm wondering how that will effect the whole process? and the gauge itself?
2) Since the range i want the pump to be turned on is when the Temp sensor is in the 200-0 ohm range, what would be the best way to get better (finer) adjustment in that basic range?
3) If i run say a 9Volt regulator (Have one on hand) to power the LM311 and for the reference voltage should i also do that for the input too?
Thank You
Components on hand:
LM311
VDO temperature sensor (P/N: **broken link removed**) (A NTC sensor, 17000 to 10 ohm))
The Thermostat is open at 78'C
The Cooling Fans turn on at 96'C
The Pump in my Mind should turn on around 80-85'C
With that said, and with the sender above, that would be a 70-60 ohm resistance
A built up a circuit on my bread board, and technically it is working which is nice, but i'm also using 2.5K Pots so the adjustment in the lower Range isn't that fine. also using a 10K resister on both the Reference and "input" voltage dividers. All testing had been using a 12V power supply
Still trying to figure out the Hysterysis for it too, and how to implement it to the LM311 since it has it's own built in Transistor (open collector)
Questions i have
1) Now the sender itself is also hooked to the coolant temperature gauge (Coil style? +, -, S terminals) so i'm wondering how that will effect the whole process? and the gauge itself?
2) Since the range i want the pump to be turned on is when the Temp sensor is in the 200-0 ohm range, what would be the best way to get better (finer) adjustment in that basic range?
3) If i run say a 9Volt regulator (Have one on hand) to power the LM311 and for the reference voltage should i also do that for the input too?
Thank You