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I need to know wat is the "x" in this schematic??????

Question by robot1398    |  last reply

Drawing schematics? Answered

This is Mousey the Junkbot's schematic...does he even have a third wheel? I would be very much obliged to anybody who can anybody draw this schematic out:

Question by blinkyblinky    |  last reply

Relay Schematic

I have a 1 volt signal that I need to latch open a 12 volt circuit for about a minute. Does anyone have a schematic?  

Topic by Divet    |  last reply

Equalizer Schematic

Is there a schematic or a compact way (some compact sound system without all of the cd players and radio and all of that other fancy stuff, my input is just a 3.5mm jack) of creating an equalizer like below? I just thought up a cool project, but no schematics on the internet...

Topic by guyfrom7up    |  last reply

Schematic of an EMP?

I am making an emp but I broke the Disposable camera's chip. So decided to make my own circuit, but it doesn't work. I am attaching my schematic. I know I am missing something, so please can anyone tell what it is? or just direct me to a simple schimatic? I have transistor... transformer and everything form the chip. I just don't know how to connect them.

Question by RishabhM13    |  last reply

Philips schematics

Philips boombox schematic Inappropriate Incomplete Spam I am attempting to add an external jack to a Philips AZ 1564 boombox and need to know where on the amp c/b to tap into. This jack will be for my MP3 player, searching the internet has been fruitless. Does anyone know where I may be able to find this info?   Preferably for Thanks in Advance !

Topic by kalanikaau    |  last reply

Schematic Symbol

In this schematic, At the top middle there is a symbol "ODD" that is enclosed in a circle. Can anyone tell me what that is? Im assuming it is the audio jack, but i may be wrong, Thanks

Topic by Grizzly_Bear    |  last reply

Schematics please.

I wish Instructables would show circuit diagrams (schematics) of their projects electrical circuits. I hate trying to figure it out from the photos. We are big boys and can understand schematics.

Topic by warren631    |  last reply

CleanBOT Schematic?

I'm new to instructables and was very interested in the cleanBOT. I downloaded the instructions but there is no schematic on how to wire it up. How do I get the schematic?

Question by jm-rose    |  last reply

Wiring schematic?

Need wiring schematic for old Turf rider 4 golf cart, 36 volt, GE motor

Question by ejredmole    |  last reply

Schematic symbols?

I found this schematic in a 1947 manual on vacuum systems and I cant translate the indicated DPDT switch into something I understand. Can anyone sketch a quick pinout for it, preferably indicating what goes where on the schematic. This goes along with my other pirani gauge question.

Question by The Ideanator    |  last reply

Electronic schematics?

I need a free electronic shcematics Program that checks my circuits.

Topic by OrIsIt    |  last reply

Attiny schematics

Recently I've been wondering if I could actually build a cpu, I knew about the attiny and thought that I might try to build it without any chips. (Ambitious I know) I'm pretty experienced at soldering and coding and have been doing both for 17 years so I reckon I can manage it. Does anyone happen to know the whereabouts of any schematics for the attiny 25/45/85? If you do please tell me, it would be a great help.

Topic by MakerBox    |  last reply

Unreadable Schematics

I thought when I joined up that this was going to be a great place to exchange ideas, so far not so! Everything I have downloaded to try to build the schematics have been totally unreadable. I saw a notice early this year that the problem had been addressed and taken care of, not so! the problem persists and if anything is worse!!! I paid for many years in advance in joining instructables thinking this was going to be a great place to share knowledge and ideas, I am now feeling as though it was money down the drain. If a simple thing as cleaning up schematics is that difficult it is money down the drain. When I can't read a schematic on my 32inch monitor no matter how large I blow it up something is wrong in follow up quality control, if there is any. I am sure I am going to get a long treatise about why this is this way and that is that way but it still comes down to if a web site cannot provide accurate legible information it serves no one! More than that its a complete waste of memory space no matter what it provides!

Topic by Still learning    |  last reply

Amplifier Schematics? Answered

Can anybody get me a an amplifier schematic which can drive an 8" sub-woofer, two  8" Speakers and two tweeters? Actually my neighbor built an amplifier which is driving the same mentioned above . He resides in the nearby apartment still when he uses that amplifier i can feel the bass hear the treble and get the music to my ears sitting in my apartments. When i asked him the schematics he laughed at me and said that I am a noob of drove me out of his house, ARROGANT MAN. So please guys help me out in this regard. Thanks in Advance  

Question by adarshnarsaria    |  last reply

Is this schematic CORRECT?

PLZ  anyone check this sch  it is the sch for mt8870 dtmf decoder  i wanted 16 outputs  is this sch correct  i dint place the crystal and other components

Question by Mayoogh    |  last reply

Tube amplifier schematic

Does anyone have a schematic for a stereo tube amplifier, I just acquired a large quantity of tubes, a tube tester and some other assorted electronics from my grandfather. Ive always wanted to make a nice tube amp, now all i need is direction. It will be another 2 weeks or so before I can actually pick them up and start testing them so I was just trying to find some schematics to get me in the right direction. I figure this may even make a nice first instructable as long as im not completely lost in the schematic. Thanks smoke

Topic by smoke    |  last reply

schematic for emergency lamp

Hi I have T4 Fluorescent Lights (8W 24v '1Feet length') and 6v 4Ah battery. I Would like to make an emergency lamp with these. Can anyone send me a curcuit diagram/schmatic.. Just manual switching on and off will also do. Thank  you  

Topic by nominds    |  last reply

Would this Schematic work?

I am an amateur building a solar powered bilge pump and was wondering if the schematic I made would work. The idea of the schematic is that if switch 1 is open and switch 2 is closed, the 5w solar panel will charge the 12 volt battery. And if switch 1 is closed but switch 2 is open, the 12 volt battery will power the 2A bilge pump. My main question is which way will the current be flowing. I have drawn some arrows to show which way I think current will be flowing. Please correct me if I am wrong. Also tell me if any components need to be flipped around.  All answers are appreciated, Connor

Question by cobrien2115    |  last reply

Philips boombox schematic

I am attempting to add an external jack to a Philips AZ 1564 boombox and need to know where on the amp c/b to tap into. This jack will be for my MP3 player, searching the internet has been fruitless. Does anyone know where I may be able to find this info?   Preferably for Thanks in Advance !

Topic by kalanikaau  

Telephone amplifier schematic? Answered

Hi, I saw this cool thing on Make; an instrument that picks up remote signals and makes noise. This link shows the original product: I hear the product is a telephone amplifier with a coil as an input. I would like to know if there is a schematic for the amp that someone new to electronics could work on. Its really interesting stuff. Thanks

Question by phillyj    |  last reply

Will this schematic work/ Is it right?

I know the wiring for the loops themselves are correct but I am wondering if I did the master bypass and LEDs correctly. This is a 5 channel/ loop switcher for guitar or audio effects loops, The master bypass is supposed to negate the other loops even if they are on. Thanks for the help! P.S. the squares with the 9 dots are all 3pdt switches 

Question by beardedknome    |  last reply

Is this electronics schematic correct? Answered

Hello, I have drawn this simple schematic and I am wondering if someone could look at it and see if it will work. The thing I am not sure about really is if the transistors are connected in a way that will make them do what I want them to. This circuit is designed to be off, then come on and stay on with a single push of the momentary switch, then turn off and stay off if something blocks the light to the photo-transistor for an instant. ****** I have updated the schematic based on the comments I got. The decision was that the circuit would come on by itself without a push of the momentary switch. The new schematic is the first picture, the old schematics are the second and third pictures. I have a breadboard and some parts for the project this circuit will be used on coming in the mail, so I can start trying this out when it gets here. But for now I am still not sure if this is right, I don't have much experience with transistors. Any advice is appreciated.

Question by Jaycub    |  last reply

Schematics to the Electromagnetic Floater?

Could anyone please send me the circuit schematics to the electromagnetic floater?(

Question by .Unknown.    |  last reply

Metal detector schematic? Answered

 I'm looking for an amazingly simple metal detector schematic, anyone?

Question by 2tautges    |  last reply

I need a schematic...

I need a schematic for a circuit using a 555 timer. I want a switch to activate the timer, which will provide 3 volts to a buzzer for one second, no matter how quickly the target is hit.

Question by XOIIO    |  last reply

Schematic and PCB layout

I saw a schematic from this is the schematic design and i tried to make a PCB layout and this is what i came up with the design is the layout correct? the blue line will likely be a jumper wire.. thanks in advance for the guidance.. =]

Question by gameshark888    |  last reply

Schematics, Help Please

Hello, I'm trying to create a simple timer that sets off a device after a set amount of time. I'm using a schematic from a basic electronics book that my grandfather had given me a few years ago. And it seems simple enough to the point where I can understand how it works. But I just can't seem to figure out how to actually put it down on a breadboard to even test it. So if you could possibly help me find out how to place this down on a breadboard to at least test, I thank you very very much. -The picture of the schematic should be below.

Topic by caseyweed    |  last reply

Would this schematic work?

Will this work? it's based on, what it should do, is when I aim the IR emitter (TV remote) at it, it'll go off for a few seconds. The goal is to hide it and piss off whoever is watching TV, and changing channels.

Topic by cvxdes    |  last reply

Will this amplifier schematic work?

Hello! I am currently designing an amplifier for a speaker. I wanted it to be a simple circuit--but powerful. So, I came up with the schematic below. the ports labeled SV2 are the output for the speakers. SV1 is the DC power source. SJ-43515RS-SMT-TR is the auxillary port. all of the resistors are 1K ohm. the capacitors are 40V 100 uF. I would build it on a breadboard, but my school has shut down temporarily from corona virus and i cannot get access to our maker space. I would do it at home but have used up all of my resistors and capacitors. Thanks!

Question by Cheesey125    |  last reply

Embed circuitbee schematic in Instructable?

I was trying to add a schematic from circuitbee and It doesnt work in the new instructables editor. Sometimes it will show up but when I use full preview it disappears... Bug or unsupported? :) Thanks all -A907

Question by astroboy907    |  last reply

Best (for viewer) schematic editor?

Hi all, this question shouldn't be to hard to answer... What schematic editor do you guys use to make "instructables friendly" images? Meaning images that pretty much anybody can understand, with little to no circuit experience. Eagle is a bit hard for the beginner to comprehend...

Question by astroboy907    |  last reply

Schematic capture / artworking software.

There are a dozen or so free electronic schematic capture and layout packages around (as node-limited versions of commercial packages). I've briefly tried a few (PCB Elegance, 123 and a couple more) but is there one which is head and shoulders above the rest? I'm looking for good library search and easy component placement and routing. Standard generic symbols as well as specifics, and autorouting and placement. Also ability to save as GIF or JPG. What would other users recommend? Incredible - When I was in electronic design for a living (a fair few years ago) my company spent hundreds of thousands of Pounds on a schematic capture and routing package and the SparcStations to run it on.

Topic by AndyGadget    |  last reply

Solar USB charger schematic?

I need a solar usb charger schematic and a list of things I need.

Question by sf49ers    |  last reply

schematic for fm radio jammer?

Need to build low power small fm jammer any just a schematic would do i can get parts and put together.

Question by 5bob    |  last reply

Translating a Schematic to a Circuit Board

I need help translating this schematic to a circuit board. As in which rows to place what due to emitters and bases. I'm new at this, please help.

Topic by dwatord26    |  last reply

How to program 22V10 with a schematic? Answered

I am trying to work with a 22V10 PLD, but all of the software I could find either don't take schematics, or cost money. Is there any software out there that will program my PLD with a schematic I drew, that is free and easy to use? And don't even think about suggesting VHDL or CUPL or anything similar, because it's not happening. Any other help though is much appreciated.

Question by FloppidyDingo    |  last reply

RGB LED Mixer Schematic

Hi, for the past couple of months, I have been searching for a RGB LED mood light controller, but so far, all of them require a PIC(Programmable Integrated Circuit). The problem with this is that The PIC, the PIC Programmer, and the IDE for some reason wont work together(even though they are all from the same company). So recently, I thought that it would be easier to just make a color mixer, that controls each of the RGB channels individually with a potentiometer assigned to each. But, I can't find a simple one. So I made my own, but I would like to ask the Instructables community if they think it will work. Thanks ahead of time :) Here is the schematic:

Topic by metrogdor22  

Led buck converter schematic Answered

I have been looking for a led buck converter schematic for quite some time now and i haven't been able to find one that suits my needs. i have a single 3 watt led that i believe needs 700ma to run. My whole purpose for the converter is to dim the led so it will have a longer battery life. i'll run it off of some rechargeable batteries that i can remove. Also i would like to be able to purchase most of the parts fairly easily. The requirements of the buck converter. -Compact -Battery powered -Dimmable -Capable of powering a 3w 700ma led This is a link to the data sheet of the led: Thanks in advance

Question by Logan Hanssen    |  last reply

Schematic circuit for 25 leds Answered

I  want to use 10   3m Blue  3.3Vf  20If  and 15   3mm Green 2.2Vf  30If LEDS  spaced over about 24" or 600 mm  using a 12 V AC 500ma  power supply  They can be wired in 2 arrays ( blue set  and green set    Could you kind people put me on the right track to design a safe working circuit for this project  I would like a on/off switch and say 1/2 watt  fuse or what ever size fuse is required   thank you for your help Alex

Question by arob2665    |  last reply

need help with understanding an instructable's schematic

I'm not very good at understanding schematics I guess, and am trying to understand the schematic at . I've created a rough translation of it at . Can someone fill in the polarities at the question mark locations and confirm that my interpretation of the wiring intersections is correct please? I'd appreciate any help available. Thanks!?

Question by aeneas shrike    |  last reply

Is there any free program to create schematics and test them? Answered

Is there any free program to create schematics and test them? Like Eagle but with a test/simulate feature

Question by west49rules    |  last reply

Schematic-reading problems ( Square wave oscillator )? Answered

Well, I try to follow an instructable for quiet a while now, but I still couldn't understand its schematic .. its not that I don't know what the symboles mean, but I dont understand the connections - Those arent physical-connections, but still ... The instructable: The Schematic: It's all over the place! There are 10k resistors appearently and 1 more resistor ( I can see 3x 1m resistors ), but he didnt mentioned those in the instructable. I'd contact the instructable-author, but he's a student and has thus no time at all. If somebody has time to explain this to me, or yet better, just mentioning the connections in english, I'd appreciate it very much. This is driving me insane. ._.

Question by Skelpolu    |  last reply

Laser beam security

Hi all, I'm new to this forum and here is my question: How do I find the schematic for the laser beam home security system? Using the step by step explanation the schematic is not displayed. Regards HtG

Topic by HermantheGerman    |  last reply

How do i design a circuit for a wireless datalink with a temperature sensor?

Using a regulator and a 433Mhz High sensitivity transmitter/ reciever ,

Question by mmfg1538    |  last reply

Can anyone draw me a schematic? Answered

Hey Guys, its been a while since a posted a question.... Anyway I was wondering if anyone could draw me a schematic from this video: Oh and remember to add a zener on the usb output hub of the charger because I think you need that to prevent the phone from sending energy back after the batteries are drained. Thanks in advance. -Prickly Potato

Question by SA-DIY    |  last reply

Schematic Building Aplication For My Computer

Okay so making schematics is a pain so I was wondering if there are any applications that you can make a schematic with? For instance I could put in a resistor symbol, capacitor symbol, transformer symbol or a speaker symbol ETC ETC and then put in wire and add numbers to identify components and then print it? Are there any applications like that?

Topic by jackillac92    |  last reply

what is the schematic diagram of inductive sensor?

It is being used in a magnetic pick and place machine using four bar linkage. The inductive switch is being used in such a way that if the metal ball will be detected in the detection area. the four bar linkage will move towards the ball where the inductive switch is located, and carry and transfer it to the desired area.

Question by belovebluesky    |  last reply

Solar charger schematic using mppt

I am facing problems with my solar charger circuit using mppt. The main problem is the mosfet switching followed by the dc-dc converter. When i connect my circuit to MSP430 to give PWM at gate voltage drops across the solar panels. I am using a pnp and npn combination to drive the NMOS IRF540. Please help me with the schematic ..

Topic by akash1994jain    |  last reply

Can someone convert this schematic to bradboard???

Hi everybody this is my first post. I am getting into electronics and I am no good at reading schematics. I was wondering if anyone could convert this schematic to an eagle eye breadboard view. Any help would be really appreciated. Thanks :) LINK TO SCHEMATIC:

Topic by graphitepanther    |  last reply