All Questions
7 questions
0
votes
0
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495
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Is it safe to reconnect burnt wire in tower fan?
I have a tower fan which was starting and stoping at intervals. Taking it apart, I found that a wire connecting the mains plug to the appliance has burnt in half. You can see the blue wire at the ...
- 531
1
vote
4
answers
469
views
Keeping a cheap, DIY transformer safe
I want to design a cheap but safe, low-wattage, always-on heater to keep a small space above freezing. (A small underground tunnel that the water pipe for an automatic horse waterer goes through.)
I'...
- 209
0
votes
3
answers
477
views
Safety rules for DIY projects involving 220V
I'm planning to add some home automation to my home, using a 5V relay and most likely an ESP8266.
This will be used, for instance, to control the lights or the heaters, certainly through Home ...
- 323
5
votes
3
answers
10k
views
Safety when using ATX power supply as benchtop supply
I found many pages where people convert an ATX power supply to a benchtop power supply to give 12, 5, 3.3V.
However the current output can be very high (several amps).
When using this and you NEED ...
- 253
-3
votes
1
answer
1k
views
How to make a 240v ac to 12v 2amp dc transformerless step down circuit [closed]
I want to make a 100-240vac to 12vdc 2amp transformerless stepdown circuit any safe reliable circuit digram is accepted
- 19
0
votes
1
answer
234
views
Use a steel welding table to ground yourself from electrostatic discharge (ESD)?
I have a large steel welding table that I have been using as a work station to solder together my own custom PCBs.
I have been using my anti-electrostatic discharge grounding bracelet and connecting ...
- 1,430
0
votes
1
answer
223
views
Rewiring a 12V charger
I have a Windows tablet with a charger which crapped out. The old charger was 12V / 1.5A - fairly standard but it had a rare tiny pin connector. Rather than buy a new charger, I decided to cannibalise ...
- 103