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1 answer
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Coin cell holder not powering circuit

I use a 3023 Keystone electronics, through-hole coin cell holder in my circuit. When I connect the Arduino to my computer, it gets powered up without any issue and my circuit works just fine. The ...
tomcajot's user avatar
0 votes
2 answers
844 views

Electrical noise in 18650 3.7V lithium batteries

I'm interested in knowing the electrical noise in Volts of modern 3.7V lithium batteries, specifically my model is NCB18650B, but since I don't have an oscilloscope I can't measure it. On the internet ...
boromyr's user avatar
  • 53
1 vote
1 answer
170 views

HX711 powered directly from coin cell

Is it a good idea to use HX711 in a project (personal weight scale) that is powered directly from a coin cell (CR2032) without any external or its internal voltage regulator? I shut down the whole ...
karel.o's user avatar
  • 11
0 votes
0 answers
400 views

MCP3561 Configuration registers resetting upon relay activation

I am looking for advice on how to solve a problem I'm encountering with my PCB project. The application involves reading a weight from a cluster of load cells and activating a relay that controls a ...
DFunke's user avatar
  • 41
1 vote
3 answers
109 views

Measuring ripple voltage using on-board components. Is it possible?

I am designing a circuit with a very sensitive analog part. In order to eliminate SMPS noise from a regular power supply, the device has its own non-SMPS power supply followed by an ultra low noise ...
Dojo's user avatar
  • 969