What is the purpose of this female jack behind my CPU? Answered

Hello, can anyone tell me for purpose  this port is used ? the image is given below . A 3.5mm male jack is going in to it easily .

Asked by ubdussamad 4 years ago


blackhawk 4 ton jack?

Do you have instruction on how to rebuild a blackhawk 4 ton fioor jack serial no. H205944 it leaks down, if so where to get parts.thank you Kirby L. whitworth.

Asked by kirbyw 6 years ago


How to convert this into 3.5 mm universal jack? (Image given) :@

Actually I'm a complete newbie and I'm afraid that I would ruin my speakers if I do it without instructions. Can somebody please give me step by step instructions on how to replace this jack with the universal 3.5 mm jack. :)

Asked by Salmanarshad 6 years ago


Could I use a scissor jack and attach a mount bracket to the jack for a router lift?

I was looking at the idea of gears and router table lifts. i thought for 20 bucks and some metal it could be done to lower and raise the height of the router  tool attached to a car scissors jack. can this be done with accuracy? Has any one tried it?

Asked by Speded 5 years ago


How to change jack for 3 connectors headphones?

Hi there, I'd like to change jack of some headphones I have. Original jack has 3 pins (left, right, power) and a switch on/off for power, now I want to use a standard 35 mm jack... How? I have 5 cables: blue, red, green, gray, brown... I'm sure blue and red go to same pin but no idea which of others go together... Any suggestion please? Thank you

Asked by DiegoC199 1 year ago



How to attach a jack to a small speaker pulled from a computer? Answered

Well, I have obtained a small speaker from a computer that I have scraped. It seems to only have a positive and negative wire, my only problem is, is that I do not know how to attach the jack to it (I'm very new to this). I've obtained some cord from an old pare of headphones witch also has a volume control wheel. The wires inside the cord are Copper, Green, and Red. Would very much appreciate the assistance.  

Asked by MyGhost 6 years ago


audio recorder

Dose any one know a simple audio recording schematic with a audio jack? the audio jack would be for recording.

Posted by minecraftpotato 4 years ago


Origami Jack in the Box

Somewhere I saw something about how to make an origami jack in the box and I was wondering if anyone on here knew how to make one that could sort of explain how to make one to me. I looked it up on google but only found a diagram that, for me, was very hard to follow. Can help me with this? Thanks!

Posted by Sunbanks 10 years ago


Soldering headphone jack, any special solder?

Hi. I purchased some decent headphones a little while ago and my little brother was playing with the cats with the jack. One of them stuck their claw through it and it needs replacing. They were pretty expensive headphones, so I want to repair these. Will any old solder do? I like my sound quality. I've only got Lead-free crap ATM. Cheers, Josho.

Posted by Josho 8 years ago


Jack Daniels Contest

Greetings:  This is my first contest entry using Instructables. I made the video, followed all of the instructions, received a confirmation email from Instructables...but my video didn't make it to the contest entry.  I've received nothing from Jack Daniels.  If I did something wrong I would of corrected it.  The entry period has closed so I'm out of luck I'm sure.  Does anyone have a email address for answers from this contest?  Many thanks. JMarling1@hotmail.com

Posted by jmarling 5 years ago


Can you help me identify the 5 pins on this 2.5mm stereo jack connector? Answered

I've looked at a few data sheets for different stereo jack connectors, but none of them appear to identify what these five pins would do in a common application. I'm building an audio amplifier, and this is the connector (de-soldered off another circuit board), and I have no part number. Please see the attached picture. Thanks for any help you can offer.

Asked by giantjamsandwich 7 years ago


how long till i see post or entry into contest

I was just wondering how long does it take to see an entry that you finally get uploaded to appear so people can start voting on it? 

Posted by smokn 5 years ago


Adding headphone jack to stereo bluetooth headset - Confused by wiring

I have a stereo bluetooth headset which has a right channel earbud connected to the mic part and a detachable left channel earbud. I opened it up and found a green and copper colored coated wire going to the right earbud then another set of green and coppor coloerd wires going to the plug in for the left earbud. Using a left/right audio testing program on my phone I tried wiring the wires up to a set of headphones to test which wire is which. When I wire up the green right wire to the right channel and the copper colored wire to the ground I get sound through just the right channel as I would expect. When I add the green wire from the left channel to te left connection on the headphones both channels play through both sides of my headphones. When I did those tests I was assuming the copper colored wire was a ground. I then reversed the colors assuming the green wire was the ground and repeated the same test with the same results. No matter what combination I connect the wires in I cannot isolate the left channel to the left side and the right channel to the right side. Anyone have any ideas?

Posted by xxxjdoggxxx 3 years ago


I give you $25,000, you give me a barrel...

I am, by dint of geography, unable to enter the Jack Daniel's Contest. I do, though, have a rather good idea, which I think would have a decent chance of winning, if presented properly. Here's the deal - you can have the idea, for free.  But, if you win the $25,000 grand prize, you must make a serious attempt to get the barrel to me in the UK.  If you "only" win first or second, then all I want from you is a polite "thank you". There's a catch, though - I will not give this idea to any one person.  I will give it to everybody who asks for it by PM. Nobody will know how many people have been given my idea, and it is down to everybody who asks to present the idea in their own video, in their own style. You can comment if you want, maybe add your own ideas if you are also from an ineligible location, but I will only give the idea by return of PM.

Posted by Kiteman 5 years ago


6.3 Jack To 3.5 mini jack how?

Hello everyone, sorry for the trivial question.. Is possible to cut the wire and manually connect a 6.3 with a 3.5?

Asked by alewin 5 years ago


How to change IDE jack to SATA jack?

I have IDE hardisk, but I want to change the jack become to SATA. So I don't use IDE cable for my hardisk, but I need SATA cable for my hardisk. Also my computer read in 3GB/s.

Asked by advante 9 years ago


Toshiba p35 toshiba dc power jack

Hi, can anyone tell me how to replace the dc power jack on a Toshiba p35-S6112? Thanks

Posted by Oztac 10 years ago


Californians excluded from Jack Daniel's contest

I noticed that residents of California are excluded from the Jack Daniels contest - bummer! Does anyone know why? Thanks :)

Posted by LanceMakes 5 years ago


Which is positive, negative and ground? Answered

 i cant figure out which prong is which just by looking and i dont have an expertise in electronics, so if you guys could help that would be wonderful, heres a pic 

Asked by gantyman 8 years ago


floor jack goes up ok but won't hold

I have replaced the o-rings and replaced the hydro oil pumps up a lot better than before but will  not hold also how to adj the air the one you are not to mess with 

Asked by white23 1 year ago


Apple headphone Jack to 2 Speakers

I am trying to attach a apple headphone jack to 2 speakers. Which wires do I have to put where because on the right side there are 3 wires which are the red, copper, and the red and green wire twisted together and on the left side there is the green and the copper and is there anyway that you can control the volume on your ipod from the remote that's on the headphones??

Posted by moojomoore 6 years ago


i want to connect speaker wire to a headphone jack (from headphones) for a project i am doing is this possible?

I need to know if it is possible to connect normal speaker wire to  the wire from headphones so that the normal speaker wire has the jack on the end, i have searched for hours on the internet but can't find anything :( if anyone is able to help i would really appreciate it :)    thankyou

Asked by jasonroughton 8 years ago


Do speakers have a Positive + and a Negative - like LEDs? Answered

I'm planning on hooking up a small speaker out of a cheap toy to a 3.5 mm Mono jack that will go into my mp3 player but I don't know if it matters which wires go where. Do speakers have a Positive + and Negative - like LEDs? If they do, how would I find it out? Thanks

Asked by 8 years ago


How do I splice my power cord into the battery panel?

Power jack on Dell Inspiron laptop is broken. Rather than fix it, can't I splice something onto my power cord that will plug directly in through the battery panel's access? Sure, you'd have to stay plugged in without battery, but it's a temporary fix that doesn't involve taking the thing apart...

Asked by 9 years ago


tech noob question on stereo jack

Can I have a silly technical question for which I would have known the answer if I only paid more attention at school? how is possible that stereo headphones, ie 2 speaker circuits use only 3 cables? I understand the "ground" is the one that both speakers,ie left and right have in common but how come it doesnt bother the signals which go to the speakers? doesnt the left signal get mixed up with the right signal? and why is it called "ground" when it's not actually connected to the ground, like for example lightning conductor is? I've read through the wikipedia article about TRS several times but still can't understand it. thanks for answer, I promis I won't forget it this time :)

Posted by tap 8 years ago


JD Independence Project IP rights

Apologies if this has been asked before, but I've looked around and haven't been able to find anything dealing with the IP rights associated with the JD Independence Project contest winners.  Typically Instructables contests don't run into this issue as they are dealing with already-created content and as such the IP is either available already or made available by nature of the public release of information (rendering the content ineligible for patent, at least under US IP law).  With this particular contest, however, the prize is meant to preemptively fund a project, business, etc - so there's definitely the possibility of IP creation.  How would Instructables/JD deal with this and what assurances do entrants have that IP generated as a result of the contest remains their own?

Posted by spinnakr 5 years ago



headphone jack prices? Answered

How much should I expect to pay just for a headphone jack?(the bit that is put inside the mp3) what is the bit actually inside the mp3 called(socket?) and how much does it cost?

Asked by flamesami 8 years ago


how to install permanent air jacks on each tire side operated by 12v compresor system to lift car and change a tire.?

The idea is to install pneumatic jack on each tire. to lift the car when a flat tire occurs. one side at time, the system need to include security system to avoid unintentional or accidental operation when the car is moving. also the system could be hydraulic operated by 12 volts pump

Asked by 9 years ago


What are internal switches? Answered

I've been searching out parts on digikey, and noticed that a lot of the power/audio jacks had an "internal switch", with three conductors and four contacts.  I've never heard of these before, and none of the datasheets were helpful, nor ten minutes of googling, in educating me.  So what are these mysterious internal switches?  I presume they somehow switch between two states depending on if there's a plug in the jack.  But why is this helpful or necessary?  And more importantly, how does this affect how to wire the jack?

Asked by Skidion 7 years ago


DC Barrel Power Jacks and Barrel Size

Recently I was browsing instructables and noticed that there aren't any 'ables on how to figure out what size of DC powerjack one has or even for that matter how those barrel power jacks are measured. One of the major things the DIY Laptop Repair guides overlook is how to identify which DC Jack you have so you can replace it. Most laptop DC jacks don't have part numbers unless they are from a main distributor like DELL. I've been reading a lot of conflicting information as to what really matters when your trying to find a replacement connector component. Some mention barrel length as being important whereas others focus on the inner and outer diameter. It sure would be nice if someone could write up an instructable on how to correctly identify these and what is important when looking for replacement parts like these.

Posted by Lorek 9 years ago


Can I add an audio out jack to a desktop radio (stereo) with isolated left / right channels?

The plan was to add a stereo output jack and a switch to turn the speakers on/off. This way I could leave a cord plugged in and still have the option of switching the unit's speakers on or off. Anyway, a visual inspection of the circuit board shows that the two grounds are isolated from each other. The plan was to tie the grounds together and switch with an spdt between speakers and the jack, then add another set of positive leads to the jack for left and right. Now that I see they are on isolated and separate circuits, I am hesitant to tie them together. Maybe I just need to go with RCA jacks and a dpdt? I guess my real question is "am I going to blow up my radio?" Do I need to worry about dummy loads or about frying the driver circuit? I realize the audio level will not be "line-out" and I have read that a 1k resister will help, but I don't mind turning down the volume before running the signal to another amp. Thanks!?

Asked by elNorm 7 years ago


Repair damaged laptop power plug

I have this damaged laptop (HP) power plug - I think my dad closed the car door with it sticking out. When I connect it to the power jack the computer starts up but then the power drops. Can you think of a reason why? The power jack seems to be fine. The computer starts up perfectly with a different HP power unit. I haven't checked it with a multimeter yet. I tried to use thick aluminum foil around the damaged part but it didn't work. With no replacement HP power plug is my only option to replace both the plug and the jack with some other male-female power plugs?

Posted by Mr.Bahur 6 years ago


how could i salvage this microphone? Answered

I have this microphone i got out of a phone it has a black and gray wire coming from it i want to have it be able to plug into my pc either through usb or a headphone jack... any ideas?

Asked by davej6694 8 years ago


can I play mp3s through a telephone speaker? (80's model telephone, 1 8 jack) PLEASE REPLY ASAP!

 This is for a piece of art work, I'm running the mp3 with batteries, hidden inside a phone i want to attach the telephone handset speaker to the headphone jack which i can then plug into the mp3 (which is hidden in the base part of the phone) IF ANYONE CAN GIVE ME SOME SIMPLE ADVICE I WOULD BE VERY GRATEFUL!

Asked by IRONY BIRDY 8 years ago


building a HD Audio front panel for my PC. Audio circuit?

Hi! I have problem with my computer. the motherboard has HD-Audio but the front panel is the usual AC97 standard. You can change the BIOS config so the front panel audio connector acts as an AC97 one, but then the problem is the speakers connected to the back keep playing even if you connect a set of headphones to the front panel. The reason is the audio jacks used for HD-audio are different from regular jack connectors (and very rare to find!). While the insertion of the plug in a regular jack connector results in breaking a circuit (and so, physically muting the loudspeakers), in an HD Audio jack, the insertion of the plug results in closing a switch (sending a signal to the driver ordering to mute the speakers by software). I managed to create a sort of HD audio Jack by combining a regular jack connector and a zero pressure micro-switch so when the plug enters the hole, a tip inside the hole closes the micro-switch. I wanted to make a good quality front panel so instead of just wiring the jack connectors (and micro-switches) to the cable, I decided to add an EMI filter. I took the circuit from this doc: http://www.formfactors.org/developer/specs/A2928604-005.pdf and more precisely from fig 6 at page 25. The circuit uses two 220 pF capacitors and two inductors for each jack connector. In this aspect the circuit is identical to that proposed for AC97. The problem is I have no idea what inductors to use or how to ask for them at the shop. All the diagram says in a footnote is: ZL should be 600 Ohms or greater @ 100MHz with a low Q (broad Impedance curve over frequency) but not even the guys at the shop knew what piece to give me. So what I did was to cannibalize the inductors from two cheap promotional radio receivers with jack connectors for the headphones and use them for my circuit. After all, they perform the same function: filter the audio signal at the headphone connector so I supposed they should have the correct values I needed. But my circuit is very noisy! headphones have a constant electronic background noise (that seems to react to things like mouse movements, hard disk activity or whiteness of the screen) and microphone has a lot of noise (of course I'm using very good quality mic+headphone). The cables are audio cables for front panel audio so they are supposed to be correctly shielded so the problem is in the circuit at my custom board. I would like to make a tutorial (including HD Audio connector construction) once the front panel is working properly but I don't know how to fix it. Any ideas?

Posted by jedikalimero 6 years ago


I want to add an external speaker jack to a Dorchester Music Maker (record player)

I bought this sweet looking record player which also has a cassette player at Value World, Indy's largest thrift store. both tape and record player work just fine. It has a small speaker in the front which doesn't sound very loud. I'd like to add a jack where I can plug an external speaker to it. Is this possible to do? I opened the player and it has about a 4 inch speaker with only a red and black wire going to the pc board. I don't know how to solder and was hoping this is something I can do easily. I don't mind learning how to solder or if there are alternatives that's even better! I've been searching all over the world for someone who has done this before but nobody.. I've seen other similar things being done and I'm concerned if I should somehow wire a preamp or some precautions I should take when adding an external speaker. By the way, the speaker I'm using is a Bose Sound Link speaker. I would appreciate some help here. I'm such a nub.

Posted by danyforreal 6 years ago


Aircraft comm system

I work on jets for a living and there are many times that we are stuck on the comm system for hours at a time running up operational checks. What I have done is taken a female and male comm jack and spliced in a headphone jack so I can listen to music. It works fine when I am not plugged into the jet, I can hear the music in my head set. But what I want is to plug it in to the comm system and have everyone on comm hear the music. So here are the two problems I have "they should have the same answer" I need the music playing in my headphones not to travel back to the source and I need the music I pipe into the mic end not to turn my mic into a speaker. I have a basic understanding of electronic principle so is all I need 2 diodes? Just looking for some help.

Posted by Makani 5 years ago


Guitar pedal audio splitter?

Hello everybody. I need some advice on something I have on my mind, but I lack the knowledge to make. I have a guitar pedal, to which I added a 3.5 mm audio out to plug my headphones to. Now, I'd like to have an audio in jack, to which I could plug my PC, and listen to the base track while playing.  I think this should be very simple to add, but you never know.  Can somebody give me some schematics to follow? Thanks a lot :)

Asked by en_rov 3 years ago



How to join a 3.5mm Jack to a Microphone ?

I want to make it to use it as a Mic.

Asked by Milin 18 5 years ago


printer jack to USB ?

How to convert/replace conventional printer cable jack to USB one ?

Asked by gusnawa 8 years ago


Samsung pc power jack looks clogged. Need pic of clean jack lining to know if what I see is clog or part of jack?

My Samsung pc  suddenly is powerless.  Looks like there's a bit of dry leaf is wedged in an opening of the lining of the jack hole. What does the inside of a clean jack hole look like? 

Asked by gadsden 3 years ago


What is this audio jack called? Answered

What is the name or what kind of audio jack is this? It would be nice to know because I have a walkie talkie that uses this connection.

Asked by techno guy 5 years ago



What if 24 was set in 1994?

Jack Bauer and CTU doing their thing. I miss those geocities page :)

Posted by gyromild 10 years ago


Custom audio jack for Front case of PC, need help!

Hey guys, I have started to do a little project for myself to convert my PC case. While everything was going nice and smooth I decided to look for cool audio jacks for front panel. Now the problem became when I couldnt find anything cool. And so i was wondering is it possible to solder the jacks somehow to be used on a motherboard pins. Was thinking to use something like:  http://www.ebay.co.uk/itm/2-x-3-5mm-Mini-Stereo-Jack-Chassis-Panel-Mount-Headphone-Input-Socket-Connector/361451740585?_trksid=p2385738.c100677.m4598&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20160908110712%26meid%3D1f134081ba3e461ab61500c43348c0d0%26pid%3D100677%26rk%3D7%26rkt%3D18%26sd%3D322058304419 . Any ideas, instructions are more than welcome! Thanks in advance! Regards, Arnold

Posted by ArnoldasK1 1 year ago


Any idea where one can get a Valco Airline guitar?

The title says it all. Does anyone know where I could buy a Valco Airline guitar (like Jack White's) for cheap?

Asked by freeza36 5 years ago


Splitting an audio signal on a PCB - Doides required?

I have a 3.5mm audio jack on a PCB.  I want to split the signal to go to two different places on a PCB.  Do I need a diode on each "branch" or literally just split them in a T with no components in between?

Asked by Joe426 6 years ago