Questions tagged [icl7107]
The icl7107 tag has no usage guidance.
7 questions
3
votes
1
answer
2k
views
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 ...
- 12.2k
0
votes
1
answer
480
views
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 ...
- 51
0
votes
1
answer
192
views
genarating +/- 5V with a common ground [duplicate]
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 -...
- 13
3
votes
1
answer
2k
views
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 ...
- 131
0
votes
2
answers
1k
views
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
- 168
1
vote
3
answers
5k
views
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 ...
- 133
1
vote
2
answers
2k
views
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 ...
- 238