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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1answer
59 views
Use an active PS/2 -> USB adapter as USB-Serial Bridge
I'm working on a small robotics project where I need to enable my old phone (Nokia 5230, shows up as USB Serial port on Windows but USB cable is straight-through) to talk to an Arduino UNO R3 (doesn't ...
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0answers
61 views
Combining 2 sources of ac to provide more power?
I have a device that takes 24VAC.
I have two adapters that takes 120VAC and converts to 24VAC.
One adapter works with the device, but I get instabilities from time to time and I wonder if it ...
0
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0answers
91 views
Convert Iphone 3.5mm pin to standartd Samsung Android 3.5mm pin
This is a simple question.
I want the new Iphone EarPod to work with Samsung/Nokia phones.
I tried to use the headphone to Samsung phones. Here is the result
Here is the Universal 4-pole Cell ...
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0answers
26 views
Is there any risk charging a camera battery with a bigger intensity AC adapter than expected? [duplicate]
I use a Samsung ST30 camera, which AC adapter outputs 4.4V - 400mA current delivered by USB port. As a matter of facts, it nicely loads on a computer USB port outputing a probable 5V - 500mA.
The ...
4
votes
1answer
69 views
Is it possible to make a multi-display adapter as an independent project?
I've been looking at the Matrox DualHead2Go, which is essentially the best/easiest way to go about using dual monitors for a MacBook Pro. Some people suggest using a USB to VGA or HDMI - but obviously ...
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2answers
79 views
input vs output in ac adapters
This is probably stupid, but I have become very confused and would like someone's help.
I have brought some equipment from the usa, and these run on 110v. Where I live, I only have 220v. I brought an ...
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1answer
56 views
Electric motor cutting out at full power [closed]
I gutted a battery for my electric power tools. I attached the battery to an ac dc adapter. When I pull the trigger of the drill it works fine until I get to the max speed (pull the trigger all the ...
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3answers
176 views
AC Adapter Input vs Output Power?
I have a laptop AC Adapter thats rated for 19.5v/3.34A DC output for a total of 65W. The input is rated at 100-240V/1.5A AC. My question is what is limiting the output to 65W? It seems like the input ...
2
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3answers
163 views
Help me identify the adapter jack
just met an industrial computer which has the following power adapter jack. how to identify this jack and where to find? (actually there are lots of different jacks here and there, how to identify ...
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votes
4answers
521 views
Can a phone charger be adapted to charge a laptop battery? [closed]
I've obtained a laptop that has no charger. Short of buying another charger online, can a phone charger be adapted to charge the laptop's battery, provided it's disconnected from the laptop (i.e., the ...
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votes
3answers
247 views
Measuring voltage on ac adapter
I got a device (an ADSL modem) that when plugged in to an ac adapter does not seem to do anything (power light stays off). I would like to know how to measure voltage for an ac adapter to make sure ...
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0answers
27 views
LFSCP equivalent package or adapter
When prototyping I used to outsource my SMT soldering task to some website so that they solder it in a DIP adapter for me. Now, I need to test out a part but I found that is in this LFCSP package.
I ...
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0answers
55 views
What's the best way to integrate SPI and MSC buses?
I have two chips. The first chip has only an SPI interface. The second chip has only an MSC (microsecond channel) interface. What's the best way to integrate them? Do you know any IC manufacturer ...
10
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3answers
640 views
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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1answer
474 views
how to convert a Sync-on-green to VGA (seperate sync) signal?
I have a computer (VAXstation 3100/M76), that has a sync-on-green output:
red --(
green + sync --(
blue --(
I want to attach that to a standard ...
2
votes
2answers
143 views
What is the proper name or part number of a 12V DC female car adapter with leads?
I've searched hobby sites like SparkFun, Digikey, BGMicro, and Jameco. I'm starting to wonder if I'm calling this item by the wrong name. What I'm looking for, exactly, is a 12V female car adapter ...
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2answers
82 views
Using a vintage US touchtone phone on a the Swiss ISDN network [closed]
I have one of these phones (US touchtone phone from the '70s):
and would like to use it in my house in Switzerland where the phone system is ISDN. My electrician told me it can't be used here, but ...
5
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1answer
113 views
Determining if a power supply is isolated?
I've been looking for a low cost adapter I can use to power some electronic circuits I'm playing with. Pretty much the only requirement I have at this time is that the adapter is mains isolated for my ...
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1answer
257 views
Charging Microsoft Surface in India [closed]
My uncle is coming from US next week and I am asking him to get me one Surface RT. But main problem is that how I should charge it here? I did not find much details about power supply on the site:
...
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0answers
163 views
Step Up Voltage Adapter 110v to 220v [closed]
I'm thinking of buying http://www.ebay.ca/itm/Step-Up-Voltage-Converter-Adapter-110V-US-to-220V-US-EU-Black-/260958491469?pt=Travel_Adapters_Converters&hash=item3cc256934d because it's cheap. But ...
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1answer
71 views
Can I power an interactive 'live' wall with copper tape and a 15v ac adapter?
I'm working on a class project to make a living wall with LEDs, paint, and copper tape spiral magnet speakers. I have a 15v ac adapter to power the wall and copper tape to connect the LEDs in parallel ...
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3answers
311 views
Use a 12 volt bulb in 110 AC socket? [closed]
If I were go get this light bulb (with the following specs). Would there be a way to use it in a standard U.S. light socket?
...
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1answer
385 views
110V AC/ 9V AC power adapter (America) Vs. 220V AC/ 9V AC power adapter (Europe) [duplicate]
Possible Duplicate:
Choosing power supply, how to get the voltage and current ratings?
I have a device that I brought to Europe from America. It has a 110V AC/ 9V AC power adapter that ...
1
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1answer
451 views
9v AC 2000mA power adaptor for a 9v AC 1000mA device [duplicate]
Possible Duplicate:
Choosing power supply, how to get the voltage and current ratings?
I need to replace a 9v AC 1000mA adapter for a 9v AC 1000mA device but all I've been able to find is a ...
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1answer
220 views
Can I use 16V power adapter for scanners that need 12V? [duplicate]
Possible Duplicate:
Choosing power supply, how to get the voltage and current ratings?
Will they be damaged? The two HP deskjet 2400 and 4300C scanners need 12V, 1.25A as I read. I only ...
3
votes
1answer
114 views
Connect two Ac to Dc adaptors in series
I have a modem with a rating of 10 VDC and 1A but I dont have a adaptor for it. Instead I have two 5VDC and 1A adaptors. Just wanted to know if I connect these adaptors in series would It work ?
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2answers
136 views
Current/milliamp rating of adapter versus device requirement [duplicate]
Possible Duplicate:
Choosing power supply, how to get the voltage and current ratings?
My DC adapter for a cordless mike has broken It' ratings are:
Input 230-240V ~ 50Hz 30mA
Output 20V ...
5
votes
1answer
349 views
Laptop power supplies - why the spectrum of voltages and connectors?
Why do are laptops designed with different Voltage input requirements? Is this just a power requirement consideration, or something more technical? Maybe the lithium battery requirements? (And - for ...
4
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1answer
165 views
AC / DC adaptor, unexpected voltmeter reading
I'm planning on using an AC/DC power adaptor to power an Arduino and various devices.
Before actually powering up the Arduino with the adaptor I wanted to play with the AC/DC adaptor, as it has ...
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1answer
877 views
Micro-B USB male to 2x Micro-B USB female Y splitter adapter [closed]
I'm looking for the above mentioned splitter.
It's like this, but Micro-B USB
and like this, but reverse the male/female.
By the way, I was able to use my Samsung Galaxy S3 phone with the Samsung MHL ...
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3answers
209 views
Do switching type AC adaptors limit the current by themselves?
Do switching AC adaptors limit the current they provide to the rate described?
I have thought that they do not, and that it simply gets dangerous by overheat, but now I am thinking that they might.
...
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1answer
173 views
UART adapter to… what is this connector's name?
Any idea of what the connector from the right is named?
4
votes
4answers
312 views
Best way to connect a RS-485 device
I have to control a device with a C++ application (Windows) via RS-485. I'm wondering, which would be the best way to connect it. Should I use a USB-RS485 adapter (which would be the most flexible ...
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5answers
1k views
acceptable bounds for replacement DC adapter [duplicate]
Possible Duplicate:
Chosing power supply, how to get the voltage and current ratings?
I've got a broken gadget that is discontinued. The only thing broken is the power supply (verified by ...
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2answers
320 views
Laptop Adapter current request [closed]
My Lenovo SL500 AC Adapter has broken and left me without a way to charge my PC.
It's Output Specs were the following:
20 V
4.5A (4.5A)
90 W
I had another Lenovo AC Adapter for a different PC of ...
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2answers
269 views
5V and +5v charger adapter, What is the difference? [closed]
I am trying to buy a stand-alone charger for my Archos 48 500Gb Internet media player. I think it uses a charger which is Output 5V 2A, but I recently came across a ...
4
votes
3answers
2k views
How to utilize HDMI port on FPGA (basic)
Two questions.
I have a Xilinx Spartan 6 FPGA which only has HDMI ins and outs. Is there some sort of guide or pre-written code that I can use to start sending images to the screen? I have no idea ...
0
votes
1answer
90 views
Specs on an AC-DC adapter that has two outputs
I have a custom adapter with 2 outputs that are the same in each output. Based on the below specs what are the outputs of each of the cables coming from my adapter?
Input: 100-120V~3A
...
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votes
1answer
44 views
Do I need the battery to be present if notebook connected via Car Universal Laptop Power Adapter? [closed]
I am going for holiday and I want to use my old old Acer. The battery lasts for about 10 mins if not connected to the electricity outlet.
If the notebook is connected via Car Universal Laptop Power ...
0
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2answers
3k views
Can I replace a power adapter of 1.5A with one of 1A? [closed]
I have a Western Digital external hard drive that uses a power adapter to 12v and 1.5A, and it stopped working. I tried it with a tester and doesn't output any current at all.
Can I replace it with ...
0
votes
1answer
507 views
If I try and fix my laptop power adapter can I damage my computer or endanger people? [closed]
I have a CR-48 Chrome laptop adapter. It is bent at the end which plugs into the computer. I have to jiggle it and tip it against a wall to make it charge.
My novice understanding is there are two or ...
1
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3answers
133 views
DC adapter not supplying current
I'm trying to get .5 A of current from a mobile phone's DC adapter, which is within its rated specifications. I am able to detect a voltage of ~5 V DC between the power and ground wires, so it seems ...
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3answers
573 views
Simple voltage/current question about modifying a voltage-regulated adapter
I have a 7.5V, 2A, Radio Shack AC adapter and I need it to be a 7.5V, 1.5A power supply. It has one of those tip-ring style plugs on the DC end that plugs into a device to provide power.
I need the ...
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1answer
2k views
Converting Power/Watts in DC to Power/Watts in AC?
How can we convert Watts in DC to Watts in AC? for e.g A device needs 1A and 12V DC input i.e (1A x 12V = 12 Watts) 12 Watts DC. If we use an AC to DC adapter/converter to generate 1A,12V (12Watts) DC ...
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3answers
3k views
Is it okay to keep a USB charger plugged into the cigar lighter?
I have a USB micro charging adapter for my smartphone for my car. It is basically a cigar lighter plug that turns into a USB micro plug. When I don’t have my phone connected, and as such don’t want ...
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2answers
195 views
Powering a DC to DC power supply that came without an adaptor
I bought a mini ATX DC to DC power supply on eBay to use with a motherboard. Unfortunately I did not notice it came without any kind of adaptor. So what I have is basically two wires, red and black, ...
11
votes
1answer
549 views
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 ...
6
votes
1answer
2k views
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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4answers
3k views
Friend used a 12V power adapter instead of a 9V adapter without looking. Is my guitar effect pedal wrecked?
Pretty much what the title says.
Later I tried a 9V adapter which I brought from home and the pedal isn't releasing any sound. On/off lights are saying it's off.
Cables and the 9V adapter from home ...
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2answers
1k views
Is there an easy way to test if my PS/2 -> USB adapter is passive?
I own a couple of PS/2 to USB adaptor/converter connectors that look like the following:
Is there anyway to test if these adapters are passive without disassembling them (or risking damage by ...
