Temu panel indicators - may need "customised"
bigclivedotcom 9:03
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I'm a bit perplexed by the fact that the 220V indicator had two resistors in it, but with one literally doing all the work. One resistor is 39K and one is 2K, meaning the 39K resistor is dissipating almost all of the power as heat. For the higher voltage buttons on AC a capacitive dropper would have been a nicer option.
The 12V indicator is fine though, although it does push the single LED at around 20mA.
I'm not sure I'd recommend these indicators for anything other than home workshop use. The physical construction is nice, but the circuitry has been shaved to the edge.
The short where I blew up one of the indicators is here:-
https://youtube.com/shorts/79vXZENXCZY
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's algorithm quirks, allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators
The 12V indicator is fine though, although it does push the single LED at around 20mA.
I'm not sure I'd recommend these indicators for anything other than home workshop use. The physical construction is nice, but the circuitry has been shaved to the edge.
The short where I blew up one of the indicators is here:-
https://youtube.com/shorts/79vXZENXCZY
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's algorithm quirks, allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators
Category (YouTube): Science & Technology
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