What is the name of this Electronic Part?

I am attaching a picture of electronic component. please some help me to identify this part exactly. it will be great if some one can provide its datasheet. code is not readable on picture so i am writing below: Text Printed on its body is : 135 (Diode Sign Verticaly) S12 This is one leged only Regards.

Asked by aliadnans 5 years ago

want someone to help me in making some electronic items

I want to make a group of members who will talk about their ideas. They will ask  question to each other. They will share what they have made. message me if you want to join the group. or you can comment below

Posted by yhdesai 4 years ago

need details on audio amplifier

I want to design and implementation an audio amplifier, and i was needing your help. thanks

Asked by mukundwa 6 years ago

door circuit?

When door open led on when close led off for 5 doors windows etc.. display led on one mainboard

Asked by fawzi 9 years ago

PS/2/You: Go-anywhere, LED digital message board

Can you please send me the circuit diagram for the project" PS/2/You: Go-anywhere, LED digital message board ". Appreciate your help. My email: prasanna_lanka@yahoo.co.uk

Asked by prasanna_lanka 6 years ago

Bell Ringing (or Light Flashing) Circuit

There's a dead simple circuit which I've built before, but can neither remember, nor find online. Just a capacitor, relay, and a few resistors to make a circuit which flashes on + off. Can anyone here find this, or re-recreate it?

Posted by Toga_Dan 1 year ago

How to drop 14v from you car battery to 6.3 volts and able to run at 10 amps

I need to know how to figure what size resistor i would need to drop 14v dc from my cars battery down to 6.3volts being able to run at 8 to 10 amps to run to a project And the wattage of the resistor?

Posted by syncdram 9 years ago

Hi people,im a 15 year old boy and i need help im trying to make a small amplifier that can work with mobile phones

I want it to be small and compact,i want it to be as simple as possible and it must be self powered,just say a resistor,capacitor,transistor,that kinda stuff because it dont know alot about electronics.so some one please help me design it and tell me your email address,i might have questions

Asked by Salesh 9 years ago

Electronic music class

We are running a eight weeks long electronic music class at Karkhana where kids build their own electronic music instrument and upload the instruction to make it in insturctable.com website. 

Posted by sunojshrestha 3 years ago

Is this an electronic cigarette ?

A friend of mine found this object in her son's room, he's 16 years old. She think it is a smoking device or something (electronic cigarette). Thank you for any help.

Asked by NovakD 3 years ago

favorite electronic kits?

I was wondering if anyone had some favorite electronic kits? There just seem to be a lot out there these days and a lot of places selling them. I'm just curious.

Posted by randofo 10 years ago

I need to make an electronic timer.

I want to use a electronic timer to set off a buzzer. LED or vibrating motor, or to ignite things, how can i do this?

Asked by XOIIO 9 years ago

Parts with specification for electronics shocker

Hi, Can you post the parts required with specification instead of breaking the camera & using the parts.

Asked by ceaswaran 8 years ago

Looking for Electronic Technician...Will Pay $$$

I'm looking for someone to do some electronic mods to some devices for a fee. It's a project for an invention. I'm in Jacksonville, Florida, but that's not important. We could communicate via email or phone.

Posted by daveyandgolie 10 years ago

Any online electronic component stores that you recommend? Answered

I need to find some electronic components for my projects and repairs. Would you please recommend me online stores in the US that are priced from moderate to cheap? Maybe electronic surplus stores? Thank you very much!

Asked by blkhawk 8 years ago

Electronic Disabler?

Is there something that exists that can wirelessly short-circuit electronics? I haven't found anything on Google. I'm pretty sure i read something about a guy making something called an F-Ray that did this, but that was in Tesla's lifetime I think. In short I want to build something that can over-voltage or short circuit electronic devices/machines. I don't care if it ruins them or temporarily disables them.

Posted by Jordo 9 years ago

what electronic component has the markings "vw-" on them?

My fan recently died on me when i smelled something burning and this is what happened. can anyone tell me what it is so i can replace it. Thanks:)

Asked by gameboy90 6 years ago

Needed urgent help of expert in electronics please...?

I was looking for electronic mosquito repellent circuit, I just google it and wow.... there are hundred of schematics. Any one can tell me which one can work perfectly and.... If I setup 555 timer IC circuit for 10KHz and add a 8 ohm speaker between 3rd pin and battery positive will the speaker give the sound of 10KHz??? Please answer. Thank you in advance.

Asked by njrajgelani 5 years ago

Where to go from the (ELECTRONICS CLASS)

Dear All,I have finished the electronics class and would like to know if there is a planned lessons like this one to take me through the rest of the electronics study. because I can make simple circuits by coping what the components and I know how to use Arduino very well . I would like to know how can I decide which components to use or how may. And to know about drawing the circus and making it to PCB. I tried to search by topic and I got lost. I wish if there was a specific planner or classes to take (free) to know these stuff. thanks in advance!

Asked by MarwahK 11 days ago

In need of piezo

Anyone knows where I can get piezo? At my local electronics shop the aren't any. I am trying to look for them but won't appear, any guess where?

Posted by TobaTobias 6 years ago

What do you recommend as some key electronic components to have in oder to complete some basic projects?

I have seen a lot of instructables list parts needed.  Most require a voltage regulator, resistors, diodes, capacitors, yada, yada, yada. Be specific with part no. and even datasheet link if you feel ambitious. Thanks!

Asked by bhobbs77 7 years ago

Will rockband or wii drums work with a proper electronic drum module?

I have a set of RBWT drums and a set of Wii drums... can I use these pads with a regular Electronic Drum Module? .. I know I would have to solder jacks onto the wires that would be compatable with the receptacle in the Drum Module... but do they have the right pulse to signal the module?

Asked by Da_Soulmann 8 years ago


Please i need help on how to go about building an electronic billboard that will serve as sign post. I promised some one i was going to take on this project funnily and now its something serious that it has now been made my school project. Please I need your help. they said they want it big like about 20'X15' feet and i don't even know a reliable source that sells the outdoor LED. your suggestions will be welcomed thank you.

Posted by johny002 1 year ago

need electronic builder

I got a project that i will need  help with i got a small entertanment center and want to have a little light show  from my ps3 i play fps games like mw3 and battlefield  and want to have a leds blink flash when i shoot or when music is playing  if some one could make a very simple  diagram on how to build or contact me

Posted by solid nrg 5 years ago

Is it important to store electronic parts in a controlled dust-free and air conditioned atmosphere? If so, why? Answered

I have been notified that my parts and service area will be shrunk and no air conditioning will be installed in the new building we are moving to in a year and a half.  I need some information as to the condition of my parts when exposed to the heat, humidity, cold, etc.  Can you let me know because if there's a problem, I have several hundred thousand dollars in parts that are at risk! Thank-you!

Asked by loishen1 8 years ago

Repair of Electronic choke for 4'tube light

I tried to repair two electronic chokes for 4' fluorescent tubes but cdn't succeed. If any one kindly help me by providing a step by step guide with the test voltages etc. at important points in the circuit, I will be ever grateful. The following things have been already done/checked. Physical checking of any defect/damage/burning marks etc., DC voltage after rectification is OK, Filter capacitor (DC voltage  after rectification ) is checked OK, Other electrolytic capacitors chked to be OK, one of the 13005 transistors was found defective - changed with a new one, but no result. Voltages at the transistor terminals seem to be OK.. May pls write to me directly. B.N.Bhattacharya bnber_2004@yahoo.co.in

Posted by bnber3451 1 year ago

Electronic Components Seach Made Easy

Whether its up to the minute, accurate stock and inventory or the fact that all distributors are either franchised or authorized gives no need to worry as every part can traced directly back to the original manufacturer. Most of the selected distributors offer datasheets, short descriptions and RoHs status. The search includes distributors for high volume inventory as well as catalog distributors for your prototype needs from distributors worldwide, including USA , Europe and Asia. Hopefully you ladies and gentlemen find it useful. http://www.Clickonstock.com

Posted by CompsWiz 9 years ago


Can i use the capitor (i cant spell good) in a disposible camera for my projects instead of buying new ones

Posted by lil jon168 9 years ago

Is there an effects pedal to lower the octave that you are playing?

I know it must exist, but I'm unfamiliar with effects pedals. I'd like to be able to lower the octave at will.

Asked by Phoghat 8 years ago

Electronic tether to tether my father's rollator to him

My father lives independently but has poor mobility and dementia.  He frequently walks away from his rollator and then gets trapped when he realises he has left it elsewhere in his home.  A physical tether would be impractical and might actually increase his risk of falling.  I think he would benefit from an electronic tether that would sound an alarm whenever he moved more than, say, three feet from the rollator. There does not appear to be a commercially-available product to meet such a need. Giving him a passive RFID tag to wear and attaching a light-weight alarm to the rollator that polls the tag every few seconds might generate a workable solution, but I don't have sufficient experience with RFID to generate a solution in a reasonable time-scale.  I would probably favour CMOS timers and logic over a microcontroller for similar reasons. Does anyone have a project that could be adapted, or expertise that could be applied, to this task?

Posted by okthought 5 years ago

IS Poly corbanate plastic is flexible?

Can any body tell me that ,whether the poly carbonate is flexible?If it is flexible, please tell the life time of the flexible PC

Asked by suresh product engineer 4 years ago

what are the possible solutions when making a quiz buzzer?

At school we were asked to find the possible solutions of making a quiz buzzer and soon we will be asked to make it.

Asked by Biyela 6 years ago

circuit diagram requst

I am making a life sized 'operation' game for a fund raising event. I am fine with construction and artwork, but need a circuit diagram for the electronics, can anyone help please? Doyou recall the kids operation game where you have to remove bones without causing the buzzer to sound or the red nose to flash? I want a circuit (battery powered) which when tripped by some one touching the probe against the metal edge will make the nose flash for about three seconds and also trip the buzzer to sound for about the same time. Any one know how to do this please?

Posted by batjonesy 9 years ago

DIY variometer for paragliding or parasailing,

I would like to build an audio variometer for paragliding, low battery consumption, very low weight Does anyone have built one or have circuit schematics and/or software for pics? Thank you all

Asked by ian bernal 8 years ago

making a VOM into a thermometer?

Anybody know how to make a VOM into a thermometer?? Thanks BTW, I made the paracord belt from instructables, many, many months ago, the belt has been the best belt I have ever owned thanks to instructables jack

Asked by jackhg 7 years ago

Crystal installation - does it matter?

I'm having some problems with a tranmiter i made. It hasnt been working as the sound is odd. i noticed when u touch the crystal the sound changes. so, Does it matter which way a crystal goes in? is there any + - sides?

Posted by Killa-X 10 years ago

Wondering What Kind of aTransistor I Need

I'm looking for a transistor that can control 12V from arduino which I believe is a 5V signal? If I'm wrong, I need what it gives off but I'm looking for one to control motors that are 12V. Thanks!

Posted by MackeFeet 5 years ago

Hi I want to ask a question about my graduation project in universty.I desing electronic metronome?

.I use 8 led and it will count 1-2-3-4-5-6-7-8-7-6-5-4-3-2-1-2-3... ıt goes like this but when I desing it,it count 1-2-1-2-3-4-5-6-7-8-1-2-1-2-3-4-5-6-7-8... like this.I use r-555(timer),4510 up/down counter,74ls138.And it will tempo adaggio,moderato,andante,allegro.I mean ıt should give 4 italian tempo .Thanks for helping....?

Asked by eraygau 6 years ago

my laptop won't charge no matter which way i move the cord, and it's short circuited is there a way i can fix it?

Ok so basically my laptop stopped charging and i'm trying to mess with it to get it to work but it won't so i would like to know if there is a way i could possibly fix it without needing to buy a new one? and also the end of the cord like where u plug into the computer, a couple of inches before that the wire is cracked and u can see the wires inside and there were some sparks when i was messing around with it. by the way, i'm majoring in electronic technology so me fixing this would really help boost my confidence in my abilities in this field. thank you.

Asked by 8 years ago

Semiconductor based switching with a different power source?

Lets say I want to switch on a circuit, that runs on one power source, with a different power source. I know this can be done easily with relays with the coil attached to one power source and the remaining pins to another power source. However, I want to know if something like this possible with electronic semiconductor based switches too. I am trying to make a USB based power outage detector for my computer that can help me in safely shutting down my computer automatically when I am not there to manually shut it down. A male-female USB extension cable of a very short length can be stripped and the red wire (+ve) can be split and connected to an electronically controlled switch which will remain closed as long as it receives current from an external power source say a wall adapter. As soon as the power fails, the switch is opened. A simple USB device like a flash-drive can then be connected to the female end of the cable and the male end of the cable to the computer. A simple C program will check at specific time intervals if the flash drive is accessible. As long as there is power, the program will be able to access the flash drive. As soon as there is a power failure, the program will no longer be able to access the flash drive and start the shut down process. Do have any suggestions?

Asked by raftor 4 years ago