Wiring Definition and 168 Threads

There is this one question on my physics homework that has been eluding me for quite a while. The problem itself is simple and is built upon common sense yet for some reason I can't wrap my head around it. The problem reads that the installation instructions for connecting an outlet to the...

wiring in smoke detector...?... Hello Forum, simple question about wiring in a house smoke detector. It operates at 120 V. Two wires, the black (hot) and white (neutral) are enough. There is a 3rd wire, red, to interconnect multiple alarms: if one rings all the others ring too... The...

I have a school project and part of the requirement is to build a circuit that uses light and simple parallel and series wiring to show weight progression. The weight progression being shown is weight being added to a balsa wood tower. What I'm planning on doing is building a box with 8 bars cut...

Hey everyone. I'm a beginner when it comes to making stuff with motors and batteries. Could anyone give me a link or a very good explanation on how to wire a 9 volt DC motor to 2 9V batteries (that are supposed to be wired in parallel) to power a propeller? I have the motors and the batteries...

Human neurons have fanouts of like 5000. Transistors in CPU have fanouts of like 3 with 10 as a large number. Humans have like 60 wiring layers in the six layers of neurons of the neocortex. Chips have like 8. When will we see silicon technology with 60 layers and interconnectivity like neurons?

Hi ! Small doubts which need to be clarified. 1)What happens if tungsten is used in domestic wiring? 2)Fan has a regulator that is used to control and vary its rotational speed. Would it be possible to minimize the consumption of electricity by setting the regulator to the lowest speed?

I am seeking help for a design solution to run wiring through a rotating shaft spun by a motor. Imagine a display mounted on the end of a ceiling fan blade - The signal and power for the display would need to come through the motor (from the within the ceiling) while the entire blade assembly is...

OK, here's what I'm doing: I currently have a single 20 watt halogen puck: [PLAIN]http://www.lightingfx.com/media/images/product_category/ro29.jpg powered through a rectifier from AC. The reason I've done this is because I need the interrupt the AC with a light timer switch. I want...

Please read this page: http://home.howstuffworks.com/home-thermostat3.htm And now tell me, or better draw, how is the circuitry connected when the heat is turned on, following those pictures. It started to interest me and now that I can't solve it, its just driving me crazy!

What I'm tring to do is connect FAN 2 Wiring (673 DKBLU 2nd picture top diagram) to The Auto pole of the AUTO/ON/OFF switch so I can manually activate the FAN if needed. I'm a little confused since in the 2nd pic, I don't see a Negative side to the coil on the relay. Can/will this work?

Hi. Who among you know a site where I can find a wiring diagram or schematic diagram of PAM (Pulse Amplitude Modulation)? I badly needed a diagram of it for my prototype in Digital Communications. I've been searching for it in Google but it only gave me different diagrams and I can't tell...

I am working on a temperature controller, it controls a separate heating and cooling circuit...I want to hook it up so a fan also comes on any time the heating or cooling is activated. The 4 circles are going to be outlets that I can plug into...the whole thing will be mounted into a radio...

Alright, I came here looking for help as I haven't been able to figure out the answer. in that picture the left is the bronze colour prong, following two are silver. There are numberings for each prong going 3-2-1 respectively from left(bronze, BUT the bronze pin has both a + and - sign...

Hi, I was hoping somone on this forum could help me out. I am not an engineer (although I wish I was). I am just DBA that is dealing with a wiring nightmare. My boss bought an HDMI to VGA cable from some guy on line for hooking up a laptop to a TV. The cable comes in and of course is no...

i have a serious question for reducing the cables and cost of a machine i want to use optical fibre(OF) ,if we have approx.50 sensors,limit switches ,potenstiometers and vavles solenoids all together in one part of a machine can i convert the output of these to get a signal form or multiplexing...

I know what this is SUPPOSED to do, but I have no diagram to show me how to hook up the *counts* 36 pins. Image attached. Is there any hope for me, doc?

Hi all, I'm trying to wire an 8 way fuse box for use as a power distribution block, but I'm having trouble with wiring the power properly. See the attachment for the circuit diagram. As you can see, the entire V+ side is tied together. Last year we used a fuse box that already had that...

Hi all, This will be very basic I am sure. I am wiring 10 number light bulbs together in series to be used as a Christmas decoration. They are 24V and 3W. What are the minimum wire properties I should be using 240V and ?? watt? I am also interested in internal shunts, so that if one bulb...

Hi folks, I'm wanting to buy a PS3 but have nowhere to plug in my audio except through a 5.1 system that's already being used by my PC. So, I decided to make a little box to wire up the two together and switch between them. But I'm having trouble with the switch... here's a nice picture in...

Homework Statement Been racking my brains over this one and I'm stuck maybe someone here can help me. I'm doing physics through distance education at high school and its very difficult. "In house fires the wiring is often cited as the cause of the fire. Often this wiring is partially...

Hi everyone, i want to make sure that when i wire this all up I am not going to start a fire :) So, I've got a 4W 12V solar panel the unit produces up to 333mA a 12V battery and a 12V DC 15 RPM High Torque Gear Box Electric Motor. I'm a newbie so don't much about electronics. All i want...

im trying to wire 100 leds into my playstation using my ps3's 120vac power supply I am new to this so I am not quite sure how to do it but i found a night light wiring diagram and was wondering what i had to do to modify it to fit my needs i attached it to this post i appreciate any help thanks

Four identical 5.00 Ω resistors are joined and form the four sides of a square. (a) What is the resistance between points A and B? (b) What is the resistance between A and C? The answer to (a) is 3.75 and (b) is 5, but I have no idea how to get those answers. Can somebody help?

(a) What will the ammeter read? Report this as a positive number. (b) How much power is dissipated by one of the 10.0 Ω resistors? I am confused about which circuits are in series or parallel wiring. I know the small 10 ohm and 10 ohm loop is parallel, and the 20 ohm to 6 ohm are parallel...

Hello! I read electricity now, and can not to understand certain things. if we link so that we sheep a series, type http://img38.imageshack.us/img38/8613/scheman.jpg 1) what is it that do that electrons used to draw/thread from the negative pole to positive pole? if you say that they...

I was wondering if somebody could assist me in locating a fairly small, one inch thick or less, terminal block. I have seen some online, but I do not know which companies to trust, and which products would be the safest. The application is for undercabinet wiring. I have a single 110/120...

What is the difference between a circuit diagram and a wiring diagram. And while your at it can anyone explain the difference between diagram that routes fibers/ connections to from a battery to a lamp for example as opposed to the alternate... one that routes to the connector on the battery...

I'm a documentary filmmaker and I am trying to build battery powered china lantern using an 13w Evolux SH LED array light bulb (http://eartheasy.com/store/proddetail.php?prod=EvoLuxSH). I'd like to use something like D-Cell rechargable batteries, possibly from a modified light bulb, although...

Background Info: I have just expanded my already huge sprinkler system (16+ zones). The old timer only controlled 12 zones so I added an additional timer to control the new valves/solenoid. Each timer needs to output 24VAC to the main valve solenoid and one respective valve (without the main...

Ok so here is the deal, I am not 100% good at reading schematics and i work 2 jobs and don't have time to sit down and study all this just yet. I swaped engines from one car to another. I have the engine harness schematics from both engines and both interior harness. The problem is wiring the...

I have an outdoor light that doesn't work because the contractor did not correctly wire up neutral line. The hot and ground are correctly wired but the neutral is not. My DMM didn't show a voltage when I measure hot and neutral. The house is built and it would be a pain in the *** to tear up...

OK. I have 4 - 12 volt batteries. In parallel is 48 volts and series is 12 volts. I would like have a series/parallel switch for running in 12 volts or 48 volts. Most important, I would like to have a diagram for just how to wire this up. Jeremy

Sorry if I post this in the wrong section. I am attempting to build a "simple lie detector" circuit which is floating around on the internet with a simple google search, but I am having trouble physically building the circuit and obtaining results. I've drawn the circuit in a simulation...

Hi i have a 10" touchscreen moniter and i woundering how could i connect it to a computer via VGA connection as it does not have 1, all it has is the grey connector you can see in the picture i presume all touchscreen moniters are the same principle in how they are made but what's needed for...

Hello I am a student working on at home project and I need help on choosing a compressible, soft material that works safely with wiring and electricity. The kind of material I need is something that is compressible and soft, sort of like a foam or gel heal pad that people put in their shoe. The...

Consider the simple scenario: You have two connections on a board that you are trying to wire to another two points. How can you ensure the wires are connected correctly or guarranteed the wires are not crossed? The intuitive simple method I can think of is to have 2 LEDs for each wire...

Two resistances R1 and R2, are connected in a series across a 12-V battery. The current increases by .20 A when R2 is removed, leaving R1 connected across the battery. However the current increases by just .10 A when R1 is removed, leaving R2 connected across the battery. Find(a)R1 and (b) R2...

hi can you tell me what should be the proper wiring for this mains variac? input 240V 50Hz Once connected, it keeps blowing up the fuse. I think it is because of the inrush current, so i want to double check with you, that i have it wired correctly. Thanx

Hi everyone, I'm new to the forum and basically need help to build a little gadget to measure the intensity of light that passes through a tube filled with solutions of different dye concentrations. I have a 10530DAL photodiode, and a light source. What I'm doing now is measuring the...

Hi, this is my first post so sorry it is not a contribution! Anyway, I have a pedal powered business that is doing very well. We use 24v DC Motors as seen here http://buggies.builtforfun.co.uk/FactFiles/motors.html" . Each motor is connected to the back wheel of the bike (we use a diode next...

I'm considering using this power supply: http://salestores.com/pr30trouposu2.html now.. if i wanted to get a voltage value of -5V into a circuit (such as http://www.tekscan.com/images/flexi-circuit-new.jpg" ), could i just put a wire from the (-) terminal of the power supply, to the Vt? And...

I'm not understanding something very basic here. I know what voltage drop is. At least I thought I did. Here is a question: Assume you have a power supply in a control panel of a building. 500 feet away is the load device. When doing voltage drop calculations for the wire (500 feet...

I could use some tips on the following setup.. Will have a larger wire (i think its 14 AWG) going into a metal box, but then inside the box i need to switch over to smaller wires (breadboard type) for the circuitry inside. Is that possible? And if so, how do i go about making that switch...

I am trying to figure out how to run wiring with or thru a expanding and retracting "arm" possibly hydraulic. I want it to expand to at least 20' and retract down to around 3'. The wiring would be 18-24 gauge. I can add more detail if needed.

Hello, I'm currently doing a project which involves generating power from thin film solar panels, I have found the kind I need on a site (http://www.siliconsolar.com/flexible-solar-panels-6v-p-16205.html) which suits my size and power criteria but I am not totally sure how I would go about...

I am servicing a machine that uses a 3 phase power supply. Some of the components (motor, compressor, fan) use 3 phase power. Other components (solenoids) use single phase (phase to phase) tapped from L1 and L3. I understand regular single phase-120v and a nuetral. The nuetral creates the...

Hello all, I am stuck in a rather simple, yet confusing quandary.. I'm working on designing a light kit for a Honda side x side utility vehicle. We are planning on drawing power from the back of the existing cigarette lighter auxiliary outlet on the instrument panel, and running the power...

I'm wiring my aquariumlet up for light. It's one of those standard 3x20W puck light sets, but I only need one light. I want to wire up a cooling fan using one of the other light terminals. The light set has a transformer that outputs 12V 0.5A, and each puck is 20W max. My CPU cooling fan...

Do electricians avoid using moderate resistance wire? [b]3. I believe, 'Moderate resistance' in this problem means High Resistance. Am I correct in that assumption? If that is the case, then high resistance of the wire will result in more heating. If the wires become hot, the...

Hello, I was wondering if anyone could help me wire up a solar panel to a 12v fan. At first i thought it would work if you were to hook up the solar panel straight to the fan but it didn't. I'm not much of an EE, but i ask for anyone's help and understanding. What i have is...