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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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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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82 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
142 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
453 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
76 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
39 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 ...
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1answer
106 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
51 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
69 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
127 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
56 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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88 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
147 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
62 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
52 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
64 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
164 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
87 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
351 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
110 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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0answers
49 views

Using a “fake” battery as adapter to allow the easy usage of an external DC PSU

I think everyone has gotten to this problem already, you have a device that you want to us as fixed installation but it only has a battery compartment and no socket. So the only thing you can actually ...
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1answer
57 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
168 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
24 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
60 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
58 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
52 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
83 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
35 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 ...
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1answer
61 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
47 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 ...
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1answer
46 views

Printer power adapter [duplicate]

I bought a power adapter to my printer but the lable on it says output voltage is 32V at 1.56A that means it is going to deliver around 50 Watts to my printer. On the other hand the original adapter ...
2
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3answers
969 views

Increasing voltage, but same current [duplicate]

There are a lot of questions asking what happens if you change the current, but keeping the same voltage. If more current is flowing to me it means you can damage the device. But what if it is the ...
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0answers
131 views

Magsafe to USB-C adapter

I would like to create an Magsafe 1 to USB C adapter to re-use my macbook magsafe charger on my usb-c macbook. I have these components below and already tried to connect both V+ and Ground with no ...
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1answer
91 views

What happened to my plug adapter? [closed]

I use a travel adapter to plug my microwave (UK plug) into an Austrian, European outlet. The other day, whilst the microwave was switched on but not cooking anything (ie the magnetron was not powered),...
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4answers
71 views

Is it better to get a laptop from your country? [closed]

My knowledge about the inner workings of electronics is very limited, but I'm planning to move country that uses a different voltage system and I was wondering if it would matter if I bought a new ...
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3answers
51 views

Voltage range adapter [closed]

I have two ideas: I use a temperature sensor, which is a thermocouple, where it will be connected to the input of the voltage range adapter. It will design a voltage range adapter capable of taking ...
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1answer
69 views

Adapter for drum module showing incorrect values?

I have bought this electronic drumkit by Roland about a year ago. It was second hand. It came with a 230v ac to 9 v dc 1000ma adapter. On the drum module, a few types of compatible adapters are ...
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votes
2answers
209 views

3.5mm to DB9 connector (differences) [closed]

I have 2 different type of connectors of 3.5mm to DB9 that I use to send RS232 commands from device to a screen. The 3.5mm is attached to the device on the serial port and the DB9 to a serial cable ...
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1answer
65 views

Power adapter giving a specified current [duplicate]

I often see power adapters indicating 5V 900mA (or) 5V 1000mA or sometimes 5V 3.4 A. Obviously they are converting current coming from 220V/110V source to 5V DC using some step down converter. But how ...
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2answers
277 views

Could this be a 5V to 9V/12V USB to DC converter? [closed]

Could this be a 5V to 9V/12V USB to DC converter? Hello, I recently visited an electronics shop in Asia where they sell this item (see below). Could it really be that this product converts between ...
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1answer
912 views

Why are UK pins sealed in HK travel adapters?

This Momax USB travel adapter was purchased in HK. I emailed Momax tech support to ask about the UK pins being sealed (as shown in the photo) and received a response saying that it’s in accordance ...
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1answer
56 views

What converter to use?

I am going to build a stage box, and I need 5V for that (to add some logic, maybe even later an STM32). I also need mains (220V) for a 12W RGBW LED PAR light. At first I thought to put in the box a '...
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1answer
716 views

How to power STM32F103C8T6 in a 'real' project?

I'm sorry for this probably very generic question, but I cannot find a good answer. I have several STM32(F103C8T6, a.k.a. Blue Pill), which I now power via a ST Link (giving 5V via USB). The STM32 ...
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1answer
127 views

Replace 3V DC batteries in water heating system to Power adapter

I'm trying to replace a pair of 1.5v D size batteries that my water heater uses for ignition. I have bought a 3V 1amp power adapter, but when I connect it to the terminals and turn on the faucet, I ...