JunglePython
Member
Hi everyone
I am an absolute beginner. I am trying to impliment this design. The values shown are the ones that I have worked out from the datasheet.
**broken link removed**
The full datasheet for this can be found here:
https://www.electro-tech-online.com/custompdfs/2003/11/UAA2016-DPDF.pdf
Basically I have made the circuit as shown but have a lead with a lightglobe
attached instead of the resistance wire for testing.
When I turn it on the lightbulb comes on. I heated up the thermister but the
circuit does not turn the bulb off. If I connect Pin 4(temperature reduction) the light bulb goes out. The room temp at the time was about 24 degrees celcius.
I tried measuring the pin voltages and they seem to be out by a factor of ten. eg. pin 1 should be -5.5, I measured -0.56. Point 5 should be -9, I measured -0.8.
The capacitor that I have used is an electrolytic, is this correct?
The set point I am trying to get is 32 degrees Celcius.
As I say I am a beginner but I really need to get this circuit up and running. Any help would be greatly appreciated.
If there is more info needed just ask.
Thanks for taking the time to read this long winded post.
Cheers
Luke :?
I am an absolute beginner. I am trying to impliment this design. The values shown are the ones that I have worked out from the datasheet.
**broken link removed**
The full datasheet for this can be found here:
https://www.electro-tech-online.com/custompdfs/2003/11/UAA2016-DPDF.pdf
Basically I have made the circuit as shown but have a lead with a lightglobe
attached instead of the resistance wire for testing.
When I turn it on the lightbulb comes on. I heated up the thermister but the
circuit does not turn the bulb off. If I connect Pin 4(temperature reduction) the light bulb goes out. The room temp at the time was about 24 degrees celcius.
I tried measuring the pin voltages and they seem to be out by a factor of ten. eg. pin 1 should be -5.5, I measured -0.56. Point 5 should be -9, I measured -0.8.
The capacitor that I have used is an electrolytic, is this correct?
The set point I am trying to get is 32 degrees Celcius.
As I say I am a beginner but I really need to get this circuit up and running. Any help would be greatly appreciated.
If there is more info needed just ask.
Thanks for taking the time to read this long winded post.
Cheers
Luke :?