Questions tagged [conditioning]
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40 questions
-1 votes
1 answer
105 views
How to read thermopile (ZTP-115) with ADC directly?
I have 3 IR temperature sensors (thermopiles), ZTP-115. I know there is a "standard" circuit for reading their values, similar to the one below. It's usually published without any detail, ...
- 21
2 votes
1 answer
846 views
How do I read a load cell just with this data?
I have a load cell (capability = 23 kg or 50 lb.) Its output is 2 mV/V. I have read that that means 2 mV per each excitation volt. The power connection of this load cell is +15V-GND, so 0.002 * 15 = ...
- 43
1 vote
1 answer
744 views
How to interpret the analog output of this humidity sensor?
I have been given a humidity sensor to work with and the only info I have is an AliExpress listing that says that it's based on the HR202L sensor. The datasheet of the HR202L shows that its resistance ...
- 147
0 votes
1 answer
918 views
Calculating AC Unit Watts
I'm trying to calculate the watts used from my AC unit. Below I am including my sticker label that's on the AC Unit along with a electrical data sheet I found online for my model. So far this is ...
- 3
3 votes
0 answers
129 views
Isolating low-current, low-voltage digital signals
I'm working with a battery-powered sensor that allows reading its measurements using two digital signals - a clock and a data line. The clock speed is abount 3kHz. In addition to those two signals, ...
- 412
1 vote
2 answers
1k views
Is a resistor trimmer a good idea for adjusting the gain of an op amp circuit?
I'm designing this circuit to measure temperature with PT100. R10 must be calibrated to obtain the desired gain. I have thought of using a resistor trimmer to adjust the gain similar to the following:...
- 680
-1 votes
2 answers
107 views
Any suggestions regarding this image i shared where a specific output voltage is required to specific input. No microcontroller should be used
Please see this image. As you can see from 0 to 999mV the output should be 0 to 100mV(this can be achieved easily) but when the input changes from 999 to 1000 and further the output should be from ...
- 71
0 votes
2 answers
540 views
Current transformer with additional multi-turn winding for test purposes
Some explanations for the circuit below: This is a CT with 1000 turns secondary. It has high sensitivity down to mA levels so that's why I put an amplifier given that the burden is small (35 ohms). ...
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