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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Unusual Polarity Symbols on Universal Adaptor

The polarity symbols on my universal adapter look a bit different to ones I have seen. Which setting should I use to power the device shown please, top or bottom position for the switch on the adapter?...
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2answers
188 views

In AC/DC adapters, why can't the DC cable be detached from the adapter? [closed]

I notice that in most (all?) AC/DC adapters, the DC cable can't be detached from the adapter. Is there a reason for that? Example: Note: The question is not opinion-based, since the existing answers ...
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2answers
124 views

Can I use this US extension cord in Europe? [closed]

Long story short: I need an extension cord to charge my EV when the standard charger does not reach the socket. I spent hours researching what options I have and most review websites I found were US-...
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3answers
101 views

UK Plug Adapter for LED light [closed]

I bought an LED lamp from Germany and it arrived with an EU plug and a UK adapter. I don't really want to use an adapter on it all the time fixed in my home (And also, the adapter they sent actually ...
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4answers
109 views

Running 3.5" Hard Drive off USB 3 (900mA / 5V)

I was having a discussion with someone about why 3.5" hard drive adapters don't exist that run solely off USB. Please forgive me but my electrical engineering knowledge is minimal and been a long ...
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3answers
105 views

Is it OK to use a 17 V adapter instead of a 16.8 V adapter? [duplicate]

I have an old model mixer which uses a 16.8 V, 500 mA adapter. The adapter broke and I cant find any adapter that provides the specific voltage and current. What I found is 17 V, 600 mA instead. My ...
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1answer
54 views

How do you splice a micro USB cable to a USB cable?

I'm making a "heated vest" Christmas gift for my wife by adding heating elements to a "fashionable" vest. I've done this for others in the past: Velcroed in this tiny power bank ...
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1answer
78 views

How to prevent repeated re-soldering of SMD chip during testing?

Lets say you have a commercial device you are experimenting with. It has a flash memory chip that cannot be read while in-circuit (I have already tried the clip thing), so you have to de-solder it ...
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1answer
53 views

2mm pitch 10pin header (2x5) to 2.5mm pitch socket connector header adapter

My PCB has a 2.0mm pitch 10pin JTAG header (2x5). My MIPS programmer has a common 14-pin(2x7) 2.5mm pitch socket connector header at the end (flat IDC cable with female header). How do I interface ...
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1answer
40 views

Problem regarding clock stopping when voltage goes too high...?

I have a peculiar problem, that I can't explain. The thing is, I have a clock where I have installed light so it will light up when it's dark in the room. This works fine, it's feeded by an adapter ...
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1answer
57 views

Using a USB adapter inside an enclosure?

I want to make a device that uses AC 220-250V power (to control relays to switch devices on/off) and prefer a single wire (+/-/gnd) to a wall socket box (thus not a separate 5V adapter). Would it be a ...
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0answers
58 views

USB Type-C powering from legacy sources

I'm new to USB Type-C and trying to design a USB-C powered device. After investing some time reading the specification and some application notes, I'm still having problems understanding the big ...
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1answer
283 views

Making my own Chromebook debug cable (SuzyQ / SuzyQable)

While trying to access the CR50 chip in my Dell Latitude 7410 Chromebook, I tried making my own Suzy-Q cable because no online store seems to have some in stock. I bought some USB breakout boards, and ...
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24 views

Mismatch uncertainty of S11 antenna measurement with adapter

A horn antenna needs to be measured for its S11 parameters, but it requires an adapter from a rectangular waveguide to a square waveguide. VNA calibration is performed at the end of the rectangular ...
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2answers
72 views

AC DC adapter sawtooth current draw above rated value

I will be using AC DC wall adapter to power the flyback converter. Power adapter is rated 15V@3A = 45W. The question is, can I draw peaks over 3A if I stay below 45W on average? For example, with the ...
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1answer
39 views

Converting dry contact to momentary switch with feedback [closed]

I need to adapt a fan that is turned on/off with an SPST momentary switch to also work with a dry contact. Additionally, I need to ensure that the desired fan state is reached when the dry contact ...
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1answer
331 views

Device (Rasberry Pi device called a Bobcat 300) continues to burn out power adapters

I have a Rasberry Pi device (a Helium miner, a Bobcat 300), and I'm now on my 6th power adapter for the device, as all of the previous adapters have burnt out after 1 or 2 weeks. Here is the pertinent ...
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2answers
76 views

Is it OK to power a laptop using a voltage regulator? [closed]

I am trying to build a power module to power my laptop using a 12V lead acid car battery. The output specs on the laptop charger read 19.0.V and 3.6 amperes. I have tuned a voltage regulator with ...
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0answers
56 views

Telephone headset adaptor weak microphone and speaker sound

I have made a simple adaptor for a telephone P4C4 -- RJ9 -- separate headset output (The wiring diagram of a telephone handset can be viewed in this wikipedia article) to two TRS jack for an ordinary ...
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3answers
1k views

How do I protect the power supply from a short circuit inside a device?

I'm working on an electronics project which would be powered by a 12V power adapter. I'm worried that in a case of a short circuit inside the device I'm making, the adapter could catch fire. Every ...
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1answer
72 views

Power adapter 12V for charging LiFePo4 12V battery with BMS with passive balancing

I have a project where I need to charge an Enerpower LIFEPO4 Battery of 12V 12Ah with BMS with an integrated passive balancer, protection against overcharge, deep discharge, over-discharge (...
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1answer
70 views

Do I need to add a ground to this recycled appliance ac to usb converter? [closed]

I found a lamp someone had thrown out and took it apart for components. It had an AC to USB adapter. Originally it had a 3 prong plug and was connected internally to various components and a grounding ...
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1answer
38 views

AVR ATMEGA32A UART not send and receive data unless programmer is connected

The code in micro is to turn a LED on when it receives "1" from UART and off when receives "0". For VCC I use a phone adapter (5V, 0.7A) which works properly and is suitable for ...
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1answer
85 views

Can anyone identify this fake chinese tesla mobile connector?

I got this from China as Tesla mobile connector adapter, but it does not fit a little bit wider and slimer. Below is the connector compare with tesla gen 2 connector(Chinese on top and Tesla's on the ...
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76 views

What power supply to use for Arduino Nano + NEMA 17 motor?

I am making a small project in which I am trying to drive a NEMA 17 stepper motor (1.5 A per phase, I would use it in fullstep mode probably) using an Arduino Nano and an A4988 stepper motor driver. I ...
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1answer
140 views

My IC pins are too small

I bought an IC, but the little pins are too small to fit into the female end of the wire. I do not want to use a breadboard or solder the wires. Are there any solutions?
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4answers
2k views

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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1answer
170 views

Simple short circuit protection?

Basically, I have dc adapters one of 12v 2a and one of 5v 1a, which do not have short circuit protection, having said that I want to make a simple circuit to protect them, I will add the circuit to ...
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2answers
42 views

AC DC adapter have the the LED on/off intermittently on ampere measurement

Why does the ON (ready) LED of an AC DC adapter intermittently turn off-on when the digital multimeter is probing its output on ampere measurement, while on DC volt measurement it gives as normally ...
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4answers
222 views

Why would a multimeter give an unexpected current reading?

I assume that the multimeter should read 2A for a 2A power supply, why is it only 0.358A? Edit: After watching a video on the basics of using a multimeter, I realised that as well as short circuiting ...
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0answers
29 views

Charaterization of waveguide to coaxial adapter

I'm trying a method to characterize a high frequency waveguide to coaxial adapter( 2-port network). For this, I use 3 adapters A1, A2, A3. After a TRM calibration, I measure A1 connected with A2 with ...
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0answers
21 views

Is it possible to connect CSI-2 camera to CSI-1 port? [closed]

I'm not hardware engineer and I have no idea if it would possible connect CSI-2 4k camera to CSI-1 port in snapdragon board? Do I need any adapter or it will work straightaway? Is any other pitfalls I ...
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1answer
50 views

About to start a new project I have some questions before I start [closed]

So I am going to start to build a table that will have two different stands of lights, which are linked below. I was planning on using an 18 volt Milwaukee battery, but after getting the lights, I ...
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1answer
68 views

Power adapter 13.5V vs 15V

I'm trying to troubleshoot a problem with my Creative Inspire T6100 speakers. They seem to be known for volume control issues. In any case, I'm trying to determine if the power adapter is working as ...
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1answer
101 views

It okay to use 12V 2.5A adapter instead of 12V 1A? [duplicate]

I have a piano keyboard that uses 12V 1A adapter . The adapter was not working anymore so i used another one which was 12V 2.5A but after 45 minutes of usage the keyboard got little heated up in the ...
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1answer
161 views

USB plug adaptation for Dremel 7750

So, I recently threw out a bag of random chargers I didn't think I was using anymore. Later I found that my Dremel charger was part of these. I did however save all the connectors and just threw out ...
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1answer
98 views

USB-C to USB-A 3.0 and USB-C for charging 20V

What is the connections configuration that I should implement to output a usb-C and usb-A 3.0 from a usb-C input? The input will be from a docking station capable of supplying 20V to charge my laptop. ...
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1answer
68 views

How do I get an output of 24V from a K30319 adapter? [closed]

The K30319 adapter is a 24V adapter made by Canon in Vietnam. I pulled it out of a Canon printer someone chucked in the garbage. The adapter works as far as I can tell. I'd like to use this adapter to ...
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1answer
32 views

What is the type of AC power in Power supply/Adaptor rating?

Most of times, Power Supply or Adapter has an annotation related to the power rating such as in this figure For the red underlined value, I understand that it is the actual delivered DC power, and ...
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1answer
51 views

Separating power from data micro USB to HDMI

I have a camera which both draws power and sends its data through a battery pack to a custom monitor. The monitor also draws power as well as receives the camera data through the battery pack. (Both ...
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0answers
120 views

BTA16 (snubless version) triac was killed with 02 laptop adapter, please advice on how to overcome!

I found some threads asking on inductive load for triac can kill the triac with over clamping voltage, however, the thread is no longer open so let's me make a question here with a hope that the ...
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0answers
31 views

Change FPC Pitch

I recently had a PCB made with a FPC on it. Unfortunately its the wrong pitch (Yes really stupid oversight) and so we need a solution that doesn't involve ordering a new board. The board has a 4 pin 0....
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1answer
58 views

Where to connect Y capacitor with a low side switching element?

I was working on a power adapter, and we had a synchronous rectifier in the positive high side rail. We have a Y capacitor between primary ground and secondary ground - between "A" and "...
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1answer
114 views

What type of power adapter barrel is this? DC in 12V 3A negative semi circle positive anker

I cannot find another adapter that fits this specification. (Maybe I do not know the terms.) It is a positive center, DC in: 12V 3A. The device itself is an Anker AH221. I tried to measure the head, ...
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44 views

Using a li-ion battery instead of an AC adapter

I have a board that uses a 19v 3.42A AC adapter as a power supply and I want to replace that with a Li-ion battery. What should the voltage of the battery be? I ask this because my laptop for example ...
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1answer
128 views

Capacitor and resistor in parallel in output 19V laptop charger [closed]

I have been studying with my charger and I cannot figure out why it leak ac while also providing DC 19V. When I touch anode and cathod of the charger and checked it, there were no ac current flow. I ...
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0answers
69 views

Name of unusual power adaptor plug

I'm trying to find out if this kind of power plug for my laptop has a name, so that I can google for it more successfully. I haven't ever seen any other like it, with its 4 pin connectors. Does this ...
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0answers
41 views

Pins for SIP Adapter

Looking to make some SIP to DIP adapters and I'm trying to find some individual flat pins as per the below image - does anyone know where to get them or what they are called? An alternative is to use ...
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1answer
58 views

Any teardowns of a usb type a male to type c female adapter? [closed]

I'm trying to make my keyboard cable detachable and USB type C, need to know how the wires in a type a male to type c female adapter would look (one with a short wire in between and not just a board).
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1answer
59 views

AC adapter not working on one outlet only

I have a switching AC adapter with an LED on it that shows when it's plugged in and receiving power. It works fine in all my outlets except one. But this one outlet works because it powers everything ...

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