Questions tagged [adapter]
In electronics the term adapter is normally used to describe something that converts from one connector or package to another. For example a BNC to SMA adapter is an example of a connector adapter, while an SOIC to DIP adapter is an example of a package adapter.
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What does this symbol mean on my Samsung travel adapter?
The charger was bought in Austria two years ago, and I know about all symbols/labels except this one. Google reverse image search did not help.
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What is the reason for yellow tape on top of USB mini-B?
I have noticed that occasionally some USB mini-B connectors have what looks like a transparent yellow tape on their top.
It might be Kapton tape, but I am not sure.
As an example, please see the below ...
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Cellphone charger has no transformer?
I opened up a really tiny mobile phone charger I have, to see how it is designed. The entire "charger" is integrated into a small 2-pin mains plug, 1 x 1.25 x 0.5 inch, that has an USB socket for the ...
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How do these new-fangled phone chargers achieve step-down?
There appear to be two kinds of power supply adapters in market.
The first/older kinds were such that they were reasonably heavy and had a small transformer inside the adapter itself. The newer ones ...
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Is it normal for DC wall adapter power supplies to provide voltages above the nominal ones?
When I measure a 9V DC wall adapter power supply with a multimeter it shows 11.8V. When connected to my board this voltage lowers to 10V. Is this normal? Should I be afraid of toasting my 1117CD-5.0 ...
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Is it possible to power a cordless drill from wall socket adapter?
I have a dewalt 18V cordless drill. I am wondering if it is feasible to build an adapter that can power the drill from a standard US wall socket?
A typical DeWalt drill needs 2.6 amps with no-load. I ...
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Digital data coming out of a cell phone headset mic?
I want to connect a sound board / mixing console / whatever-you-prefer-to-call-it to the headset jack of my Motorola Android phone. I know the typical TRRS pinout of Left/Right/Ground/Microphone, and ...
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What is the purpose of oscilloscope-probe-to-BNC adapters?
What are these adapters used for?
(Image off Google, source)
They fit over the tip of a passive oscilloscope probe, like this:
(Image excerpted from https://www.caltestelectronics.com/public/...
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How do those 3.5mm stereo to mono adapters work?
I have one of those 3.5mm Female Mini-phone mono to Mini-phone stereo which I was hoping to use for connecting the output of an MP3 player (stereo) to a pillow speaker (mono).
But then it occurred to ...
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Why do laptops need larger transformers than mobile phones?
I was wondering why a laptop power adapter is so huge. Most laptops that I have seen use a ~19V power supply. Using transformer equation, and considering 100 turns in the primary(just an assumption), ...
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Reading and understanding electrical specs on laptop AC adapters
My Dell laptop comes with an AC adapter with the following specs:
65 W
Input AC: 100 - 240 V, ~1.5 A, 50 - 60 Hz
Output DC: 19.5 V, 3.34 A
My HP laptop:
...
user3320
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Why would a USB-C adapter have a pull-up resistor?
I'm talking about a USB type-C male to USB type-A female adapter, the ones you need to connect a USB flash drive to the latest MacBooks.
According to USB-C specification, this sort of adapter needs a ...
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DC adapters: why so few amps?
If I have a device that draws 5 amps at 12 volts, I can use any 12 volt DC adapter that can provide at least 5 amps.
Why don't all DC adapters have the capacity to provide loads of amps!? If all DC ...
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Is it safe to use a DC power adapter that isn't UL Listed or CSA certified?
I picked up a 9V switching DC adapter from SparkFun a while back, but I've been hesitant to use it because it doesn't have any of the usual "safety" approvals that you normally see on power adapters (...
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Difference between these RF adapters
Can someone explain me the differences between these two RF adapters. I know the one on the right is better (and much more expensive as well) but is there a difference in the functioning of these ...
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