Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [icl7107]

7 questions
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1 answer

ICL7107 not working on breadboard?

I am building a very simple thermometer circuit on breadboard, based around the ICL7107. The 7-segment LED display I am using is made up of 3x TOD5261BE-N displays. My intention was to make something nice and easy, just as an example circuit to…
MCG
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1 answer

Random display temperature reader LM34 and 7107

I am a beginner. I have been stuck on this for quite a long time. I am following this schematic. In replace of LM35, I'm using LM34. I am getting random flashes from the 7 segment - gibberish. My suspect is that I am not providing the right current…
hammies
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Modifying a digital LED thermometer kit to drive larger 4" 7-segment LEDs?

I'm interested in building an LED digital thermometer with 3 or 4 large 4"/100mm 7-segment LED display digits (for example, Kingbright SA40-19EWA). There are plenty of kits available which come with smaller LEDs (e.g Conrad, Canakit). My question…
timday
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help to debug thermometer circuit

I did finish a circuit, but it is not working. It is a LED thermometer. I assume that is not working, because It doesn't show nothing in the LED display. To debug i followed the steps: I turned on my power suppy in 9V (it is recommended something…
VP.
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What can be used to provide -5V potential to a circuit?

What can be used to provide -(minus) 5 volts in the circuit diagram given in the link below? Also can someone highlight what is the purpose of zener diodes? Simple digital meter using ICL7107
Taimoor Ali
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Issue with 7107 IC

I am having trouble with the 7107 IC. I have 5 of them on my PCB: 3 being used as current measurement and the other 2 are being used as a voltage measurement. Only one of the 5 are displaying readings on the 7-segment display (may not be calibrated…
JOHNDOE
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genarating +/- 5V with a common ground

I am working on a digital voltmeter circuit using ICL7107 IC. Having trouble powering it up. There is a -5 V supply to pin 26. I used a 7805 regulator for +5V supply but wondering how to supply the -5V. a) Can I use the output of 7805 to somehow…
Deepak Singh
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