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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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Is it safe to charge a switched-off laptop with 0.25A too few on the adapter? [on hold]

I've the following problem. A laptop, feeded by USB-C from an adapter. The original adapter has an output of 20V, 2.25A, DC Now, due to bad quality of the wire (loose contact inside the plug), the ...
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27 views

HDMI to LVDS splitter/adapter

I am currently trying to design a splitter that will take a 4-pin LVDS cable (similar to this) and an HDMI cable as input and have a 4-pin LVDS output. There are HDMI to LVDS converters on eBay but ...
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48 views

RS485 full duplex to Adapter with A and B ports

I need to configure a sensor (Thies 3D Sonic Anemometer, Manual: https://www.biral.com/wp-content/uploads/2015/01/4.383x.xx_.xxxUS3D.pdf) via my computer, it has RS485 full duplex and half-duplex ...
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1answer
55 views

Is it safe to use a 19V DC adapter for a 12V input if it can provide enough watts? [duplicate]

I have a small TV which expects 12V DC at 34W. Can I use an adapter with a higher voltage rating (19V for example) as long as it can provide enough amps to satisfy the amount of watts needed by the TV?...
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1answer
108 views

How do USB to serial adapters work?

I'd like to know how a USB to serial adapter (such as the FTDI FT232RL chip) works. The way I think it does is the following: Picture a system composed of a MCU, a USB to serial adapter and the PC ...
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1answer
44 views

Yellow tip polarity

What does the yellow tip on some adapters mean vs the blue or silver
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2answers
68 views

Identifying this component adapter/socket

I'm sorting an old collection of electronic components, some of which I don't know what they are used for, like this one: This component is about 7 mm wide. Does anyone recognize this? Thanks in ...
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38 views

Build 100-240v Power Adapter

I am trying to power a 5v circuit from any voltage between 100-240v. I know it is possible to do this with a transformerless power supply, but only for a single voltage (e.g. 120v only), but how do I ...
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3answers
118 views

Why is a laptop power supply output voltage different from its battery?

I hope you will not mind answering. This question has long been on my mind. Normally, the adapter output voltage is higher than that of the battery. In my laptop's case, the output voltage of the ...
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1answer
16 views

Use different adapter for LG 25UM65-p [closed]

My LG monitor (25UM65-P) has original adapter (19V, 1.7Amp), can I use a different adapter (14V, 2.14Amp) for it? Has this any side effects or negative points?
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42 views

Is it normal for an unregulated AC/DC Adaptor to provide voltage after unplugging

I have an AC/DC adaptor, as it has variable voltage setting (1.5, 3.0, 4.5, 6, 7.5,9 and 12 V). Voltage readings are larger. For 7.5V setting it provides 12V, for 12V it provides about 18V. So I ...
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66 views

What is this adapter and what can I replace it with for simpler operation?

My church plant uses the D3540 pager - https://www.microframecorp.com/d3540-4-digit-wireless-visual-pager-display We have to setup and tear down the pager system every week. We have to manually wire ...
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1answer
45 views

Difficulty sourcing a 6mm dc adapter/plug/converter…any ideas?

I recently bought a second power supply for my laptop. The laptop requires a 330w power supply (it runs a desktop grade CPU), which costs around £120 (Laptop is the Asus GL702ZC). I managed to source ...
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4answers
160 views

Converting Christmas Village from DC to AC

So this was the year we bought a AC-powered O-gauge Lionel train and a battery-operated village to add to our Christmas tree decor. The problem, the village eats batteries like a kid eats cookies. ...
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2answers
59 views

How can I use a US 120 volt Ryobi charger From a 220 volt main? [closed]

I bought a ryobi kit in the us and I want to use it in in Europe. I doubt that I can plug it directly into the socket, what kind of converter/adapter do I need? Is there a way to adapt the charger ...
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2answers
38 views

In powering household devices, is the voltage preset and the amperage varies as needed?

When powering household devices, does a power adapter have a preset (or in some cases user-defined) voltage, while the device (while turned on) "selects"/draws whatever amount of amperage it needs at ...
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2answers
87 views

Is miniaturization of office device A/C adapters feasible?

Today I looked upon my desk: as you can see in the screenshot below, there are three plastic boxes containing A/C adapters for (I think all in the 12-20V and 1-2A range): screen device notebook ...
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2answers
227 views

Replaced 4x AA battery with 6V 3A DC adapter, but device won't work

I'm hoping you smart folks can help me. I'm puzzled by what I thought would be a simple DC battery to DC adapter swap. The device I'm trying to mod is a a microchip activated pet door (SureFlap ...
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1answer
519 views

Electric shock from outdoor security cameras

I just bought this outdoor security camera kit from Amazon. (Amazon product link) When wiring it up, I noticed that I got a small sharp shock when touching the small screws on the metal casing ...
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3answers
81 views

What is this called? [duplicate]

What is the cylinder on this wire? Is it some kind of adapter or transformer? What purpose does it serve? Why couldn’t it be incorporated into the primary adapter that plugs into the wall at the other ...
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1answer
44 views

Effects of Different AC Adapters On Various Electronics [closed]

Long time programmer starting to learn about electrical engineering a little bit. I have a Raspberry Pi, an Arduino, and various simple projects I've soldered together out of kits and schematics ...
2
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1answer
222 views

Function of the Third Pin Inside Laptop Barrel Connector

So I've been doing research on barrel pin connectors, and have been trying to apply this knowledge to understand laptop barrel connectors, specifically. My confusion relates to the function of the ...
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5answers
1k views

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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1answer
61 views

Taking Quizbowl buzzers and connecting to a computer

Recently I Bought quizbowl buzzers from buzzersystems.com and the buzzers i received use an rca cable. If you did not know basically, when you click a button, it sends a signal to a box which ...
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1answer
70 views

Can I use a USA Led Bulb in Europe? [closed]

I am a software engineer working with an IOT company in the states, Right now I am located in Europe for a month and a half, and have some hardware (light bulbs) that I need to use to finish some ...
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2answers
165 views

DIY electromagnet using copper wire and AC adapter

I want to make for some demonstration (caching some paper clips on ON and doping them on OFF) electromagnet made from copper wire (should it be single wire?) with ferromagnetic inside coil: As power ...
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2answers
57 views

How long would the capacitors in an iPhone power adaptor hold potential energy?

I was curious as to whether one could potentially get a shock after touching, with sweaty hands, the prongs of an IPhone power adapter upon unplugging it. If possible, how long would this charge take ...
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3answers
91 views

How to replace this connector

My friend accidently stepped on a wire for his light and the tension broke the adapter's connector - I told him I'd try to fix it. I've already cut the connector off and have readied my replacement. I ...
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4answers
184 views

How do AC adapters achieve low current?

The image above shows how a typical AC to DC adapter works, high voltage (230V) at low current is fed into the primary coil and then gets stepped down to a lower voltage with higher current, ...
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1answer
35 views

Mobile charging during low main supply [closed]

Due to some electrical issues in my locality, the supply voltage of 230V was unfortunately reduced to 110V. When I connected the 5V charger (Input: 100-240V AC; 50/60Hz; 0.2A & Output: 5V 800mA) ...
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0answers
70 views

Is there any standard (or even a de-facto standard) for TRRS to USB? [duplicate]

I've had a few MP3 players that used a single 3.5mm TRRS jack for both connection to earphones and for connection to a USB port (for transferring music files and re-charging the player.) To that end, ...
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1answer
55 views

Is it possible to use a 12V 3,35A power supply to power a 20V 2,5A device? [duplicate]

title says it all.. The device works with that power supply (adapter), but will it make any damage to the device or even worse (blow out or something like that)? thanks
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2answers
69 views

Why is the 240VAC-12VDC giving both 12VDC and 26VAC as output?

I was using this adapter to power a 12VDC LED strip and felt electric shock from the output wire. When I measured the output with a multimeter, I found both 12VDC and 26VAC on it's output. What could ...
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3answers
436 views

Can I use a power strip with max 250v to a 120v power outlet without a converter? [closed]

I'm going to move to Canada from EU. From my research, most people said that if someone from US moves to EU, they'll need a power converter otherwise it might fry the thing. My question is, if I use ...
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2answers
90 views

wall warts: constant specified current though universal input voltage?

How come the input drawing current be constant (1.5A) even though it shows that the adapter is universal input (100-240V)? I mean that the power supply voltage varies in different locations still how ...
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3answers
62 views

How adapters can accept 110-240V but still outputs a constant current

My monitor comes with an adapter , which accepts electricity from wall, ranging from 110V-240V. I am wondering how it could output a same amount of current despite a dynamic voltage?
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1answer
54 views

How do I correctly size a power adapter for a heating element? [closed]

I have a mirror defogger heating element that is intended to be hardwired to a 120V circuit and attached to the back of a bathroom mirror. The heating element says the following -Power supply: 120V/...
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1answer
1k views

Laptop battery and adapter voltage ratings

Considering a 4-cell (laptop) lithium-ion battery, the cell voltages add (since they are in series) to 3.7 V * 4 = 14.8 V. However, the adapter says that it has a 19.5 V DC output. I want to know why ...
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2answers
136 views

Hack for connecting two terminal blocks?

If I bought some of these connectors. Is there an easy way to connect two of the green terminal blocks together? i.e. I would end up with a male to male DC adaptor. Could I do this without having ...
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1answer
58 views

Can my AC adapter from the UK be used in the USA? [closed]

I have a device which I originally bought in the the UK and now I'm trying to get it working in the US. The adapter that came with it is labelled as "Input: 230V AC 50Hz / Output: 9V 2000mA" I'm ...
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0answers
292 views

SPI to MIPI-CSI2 converter

I use a camera module(lepton) which has SPI communication protocol and a carrier board which has only CSI ports. As far as I understood both are serial communication ports and communication is almost ...
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1answer
26 views

Type of power converter to be used for both AC and DC use

What kind of power adapter that I need to use to supply power for a DC motor of a fan and also an AC heating element? These two components will also connect with Arduino. Is any of these power ...
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2answers
72 views

What happens if I use a DC adapter with a15v output with a PC monitor with a 14v rating?

I have a PC monitor with a 14v rating but it's original DC adapter is broken. Can I safely use a similar DC adapter from a similar monitor, but with 15v output instead? How likely is the 14v monitor ...
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1answer
45 views

Will 12V2A break smaller pc fans?

Currently I have a 12V2A adapter that powers 2x 12V0.3A/12cm pc fans. I want to bring in an additional 12V0.4A/23cm fan to the circuit. The question: can the new setup cause any harm to the fans or ...
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1answer
76 views

Name / Adapter for Vintage AC Plug

I just came into possession of a bunch of vintage "audio" gear from the nuclear labs at Los Alamos (a bunch of test oscillators, oscilloscopes, pulse generators, etc). Been checking it out, seeing ...
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2answers
65 views

Replacing a Switching Power Supply for an AC-DC Adapter

I am designing a 3D printer. I need 12V and 5 amp for powering the printer extruder and 11 amp for powering the heated bed. At the moment I am using the model Model S-240-12 capable of delivering ...
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2answers
85 views

Disassembling AC adapter

I got new wall mount AC Adapter, the adapter itself is good, but cord is low quality, very short (1m) and very hard and coarse, non-flexible. I want to replace adapter cord with better one. The ...
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1answer
37 views

Can I use a surge protector with an adapter on travel?

I don't know if this is a question for this site, but here I go: You know how the US and Europe have different plug in points for the electrical appliances/chargers etc. So if I want to use a phone ...
1
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1answer
67 views

Car adapters (12V -> 5V) in parallel

Am wondering if there are any risks involved in putting two (5V) car cigarette lighter adapters in parallel. They will be part of a setup replacing the car stereo, so will be connected to the "...
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1answer
49 views

Is there any reason for the wires in a PCI-e and CPU power cables to be separate?

These are the connectors they are for: So as you can see, the PCI-e connector uses either 3x12v + 3xground or 3x12v + 5xground wires in the cable. I've red that optionally some of the wires can be ...