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Questions tagged [short]

The tag has no usage guidance.

-3
votes
0answers
53 views

Applicance Short Circuiting Do surge Protectors Protect? [duplicate]

I know that static electricity can damage components, even if it does not destroy them or “break them” studies and tests have shown that it could decrease performance even a little if no noticeable ...
0
votes
4answers
142 views

Short Circuit Question [closed]

I know that static electricity can damage components, even if it does not destroy them or “break them” studies and tests have shown that it could decrease performance even a little if no noticeable ...
2
votes
3answers
96 views

Soaking phone motherboard in isopropyl to fix potential corrosion

Is it advisable/safe to soak my phone motherboard in an isopropyl alcohol bath? I dismantled it after water damage occurred and it now powers on fine but my cell signal isn't consistent. I was ...
1
vote
1answer
57 views

Basic circuit - valid pulldown

I am trying to create a circuit with multiple 5V logical control lines pulled down with 10K resistor. Is the below circuit the right answer? I can't help but feel like this will create a short ...
0
votes
0answers
59 views

Why is this transistor failing?

I have a Sharp LC-19SB24U Monitor that tends to blow a fuse on the power supply. Every time it does, the FET (FQP8N60C) has also gone bad. So I replace the FET (with thermal paste) and the blown ...
0
votes
1answer
76 views

Seared my circuit while checking voltage [closed]

I was attempting to diagnose a problem with my dvd player as I was not getting any power, I wanted to use my multi-meter to see where the circuit was shorting out, I set the setting on the multi-meter ...
0
votes
0answers
63 views

Voltage Rectifier Fails When Doorbell Button Shorts Inputs [duplicate]

I am working on a project that involves powering a 3.3V microcontroller off a doorbell transformer. The design uses a full-wave bridge rectifier (1) to convert the AC voltage from the doorbell ...
1
vote
3answers
275 views

STM32F103 - Single pin shorted to VDD?

I have a custom STM32F103C8T6 board. Long story short, the MCU works fine, I can connect to it, program it, read sensors, toggle GPIO etc. The problem is that, one of the crucial pins seems to be ...
0
votes
1answer
48 views

LTC490 wiring caused short

I'm testing a LTC490 with a hand-turned encoder. As I only have one IC, I tried testing only one channel (A). I wired as follows: Pin 1 to 5v, Pin 2 to pin header (to read output voltage with a ...
9
votes
9answers
6k views

12 V car battery short circuit with a wrench that has resistance of 0.5 ohms, how much current?

ANSWER/ERROR FOUND: resistance of the leads of the multi-meter is the culprit. The true resistance of the wrench cannot be measured using a basic multimeter. The resistance of the wrench is more so ...
0
votes
2answers
78 views

Understanding the resistance readings between PCB connectors

Based on a question I asked earlier today, I am trying to verify that there's not short caused by my bad soldering. Luckily I had bought two of these modules. To make a baseline, I started looking ...
0
votes
3answers
93 views

How to test for shorts on a breakout?

Working on LoRa project with the RFM95W. Most online resources like 1 and 2 suggest using a PCB since the module itself is quite small and hard to work with; but where's the fun (and learning) in ...
1
vote
1answer
207 views

Short circuit between Vdd and Vss after high current through microcontroller clamping diode

When hotplugging a connector on my PCB, my microcontroller gets hot and a short circuit is formed between Vss and Vdd. One pin of the connector is the power supply ground, another is connected to an ...