How wires connect to terminals and to each other; coloring and organization schemes; appropriate wire selection and installation techniques

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14 views

Wiring GU10 Sockets: Cables are of same color - which one should be “live”? [migrated]

Question: How can I know which cable should be "live" and which one should be "neutral", or does it not matter? (GU10 socket).
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1answer
25 views

How to test/connect the CAP-150 capacitive sensor

I am evaluating a few sensors for an application at work, and I'm having some troubles figuring out the correct way to connect/test this sensor: Gems Sensors' CAP-150. Datasheet here. I want to ...
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2answers
48 views

Wiring Harness Software

Is there any software or method out there that makes laying out a wiring harnesses easier? I can draw a wiring harness out in just about anything, but mapping all the wires, colors, lengths and ...
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2answers
65 views

How do you power 6 servos

I have 6 MG996 series servomotors. A single motor can be controlled by an Arduino board using a 5V power supply. Some specifications Running Current 500mA - 900mA @ 6V Stall Current 2.5A @ 6V ...
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1answer
61 views

Passing USB signal over short SATA cable and connector

I am working on a prototype device and I will have a daughter-board mounted at an odd angle in a custom enclosure. I need to get a USB signal, and a few extra GPIO type wires, over to the board. I ...
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3answers
61 views

Large Wires on a Perfboard

I am working on a project on Perfboard which involves controlling a motor that draws about 10A, and I am using 18AWG stranded wire to connect the MOSFET on board to the battery and motor which are off ...
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1answer
52 views

When routing power how is a safe current-carrying wire configuration determined with multiple wires?

I've been looking at a device/power-supply pair I was sent recently for a project. The device specs say it needs 24V and will draw 10A max. The power supply provides 24V @ 9A (14A peak). The power ...
2
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1answer
50 views

Taking power from two different feeds

Probably a silly question I know but I'm not all that good when it comes to wiring but at the same time don't want to blow myself, or my car up! I have a set of sidelights/ daytime lights that take a ...
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3answers
442 views

Extending LED length

Completely new to electronics, I've just begun to play with an Arduino. I was wondering, if I wanted to make an LED sculpture, what is the correct way to extend the legs of each LED so that they stand ...
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3answers
71 views

SPDT Relay with 8Pin

I needed a SPDT relay with 240Vac so I bought this relay from Maplin http://www.maplin.co.uk/p/15a240vac-spdt-miniature-relay-n07aw But I am heaving problem to wire this relay because it has 8 pins ...
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1answer
41 views

Sensor & power wire length & connection inquiry

I'm an experienced SW engineer, but a noob when it comes to .NETMF & hardware. I've started working on my first project (garage controller that will monitor & control the open state of the ...
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1answer
154 views

How can I power this LED Matrix?

I'm controlling a 16x32 LED matrix with an Arduino and have it wired correctly (I think) but I'm having trouble with the power. I tried to follow the instructions from Adafruit but was unsuccessful in ...
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0answers
50 views

3.5mm to 3.5mm female mount wiring

I am trying to make a detachable mic mod similar to this: Full Description I have done everything in the pictures but something in the wiring is wrong or I have the wrong cables eg: the mic ...
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0answers
36 views

Current Return Path for Plasma Experiment

I'm planning to use an old non-GFI neon transformer to produce plasma for some research I'm conducting. However, the neon transformer is center-tapped which complicates diagnostics (such as ground ...
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1answer
77 views

Wiring 24v bulbs to plug into mains

I am trying to wire sets of around 10 24v incandescent bulbs and am hoping to be able to plug them directly into the mains. I am by no means an expert in this kind of thing, but I believe that wiring ...
0
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1answer
50 views

Wiring and grounding stepper motors

I'm following up on an earlier question I asked concerning a stepper motor failing on a custom made "H" type plotter (Stepper motor failing. Electrical interference?). I now have 18 AWG shielded cable ...
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3answers
81 views

Need assistance in identifying wire

I'm working on a LED project similar to the one in the picture, and I need to identify the black wire that the arrows are pointing to. What are those called? Here is a picture:
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1answer
70 views

Looking for a particular solution to a wiring problem

I don't even know what such a part would be called, but here's my problem: I have a bunch of electrical equipment (sensors, relays, etc) on one side of a piece of stainless steel sheet metal. I have a ...
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2answers
80 views

Crimp terminal insulation of exposed leads

I'm dealing with an equipment which has a lot of internal wiring. The system is powered in 12V but the wires carry a good amount of current (in excess of 10A). I need to connect different units with ...
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2answers
139 views

How to complete circuit diagram?

I have limited knowledge on electrics and wanted to ask how I can complete this circuit, how would I go about wiring it up? Bulb should ONLY be ON when Input A is ON and Input B is OFF. Bulb should ...
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2answers
52 views

Help with wiring of stereo jack

Could someone point me in the right direction. What I'm doing here is I took the insides from a cheap Bluetooth speaker and I would like to rewire it to an headphone jack (male). I have the cable ...
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2answers
532 views

Wiring Arduino Mini Pro with CP2102 USB to TTL

I have an Arduino Mini Pro and a CP2102 USB to TTL module as in the image below: I couldn't find a suitable guide for the module I have. So, how should I wire them together?
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1answer
94 views

Is the DESIGN of an MPPT Solar charger SUPPORTING combination with regular battery charger on the LOAD side? [closed]

I just got my "LCD 30A MPPT Solar Panel regulator" for my caravan, but connecting it raised an issue. It looks like this: ...
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1answer
52 views

Visaton speaker, how to wire up [closed]

I just got some Visaton speakers in the mail. But I'm not sure how to solder on the + and - wire. There are four solder blobs (as seen in the picture below). To which ones do I solder?
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3answers
1k views

What's a schematic (compared to other diagrams)?

What's the difference between a schematic, a block diagram, a wiring diagram and a PCB layout? Why do engineers want a schematic instead of a wiring diagram? Where does Fritzing fit into this?
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1answer
48 views

Slice of Pi wiring

I'm trying to wire a Ciseco Slice of Pi. I need to break out the 3v3, 5v and GND solder pads as I need several of each. There's no track between the pad and the holes I want to use. I could wire ...
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2answers
112 views

Daisy chain (parallel) of IR sensors

I've got 5 little Sharp IR sensors I need to wire to an Arduino. These are the sensors: https://www.sparkfun.com/products/242 Trouble is, I need to put the connections in a relatively small area. ...
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1answer
70 views

What would cause SRAM to have no errors when 5 of the bits are high?

We have a SRAM (8bit by 512k chip, 19bit address) connected to a XMOS micro-controller using a ribbon cable soldered on both sides. The xmos micro controller is a startKit and the sram chip is a ...
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1answer
108 views

Breadboard Wiring with Seven Segment Display

So I'm planning on building a skee ball machine and as I've been looking into it I've decided to use some seven segment displays from here: As I've looked into this more I know I need a breadboard ...
0
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1answer
66 views

How do I wire up this relay?

I'm making this circuit: I've bought an Omron G5LA-1 non-latching SPDT relay. It looks like this (from the datasheet): I'm struggling to figure out how I wire this up though. I believe I need to ...
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1answer
137 views

Photodiode Array Wiring

Sorry if this is a basic question. I would like to use photodiodes to precisely measure changes to light amplitude using an Arduino, similar to Figure 2 here: However, I would like to wire six ...
1
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1answer
161 views

Guitar pot wiring

I was about to wire my guitar using this official scheme and I can't seem to understand it properly. I get that the signal is going through the black wire to the volume pot, but how does it get (and ...
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1answer
101 views

Red for +ve, black for 0v, …which colour for -ve rail?

I'm bodging together a bench PSU from an old server PSU, about to order a mixed bag of terminal posts for the front panel but then tripped over the problem that I'm not sure what's the correct or most ...
4
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2answers
345 views

Explosion proof enclosure wiring

I am currently working on a device that is to be used in hostile environments. It needs to be explosion proof. Our team has decided to place our instrument in this housing shown here. ...
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1answer
95 views

Thermal Johnson-Nyquist Noise Generator

I have no background in electrical engineering so please bear with me. I want to create a random number generator/displayer using a resistor. My idea is to wire a resistor to an amplifier of some ...
2
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2answers
260 views

How to join high current wiring?

I need to join 4 wires together: a 6 gauge wire, two 10 gauge wires and a 22 gauge wire. The 6 gauge wire is the current source, the two 10 gauge wires will draw a continuous current of up to 30A and ...
2
votes
1answer
105 views

Changing iron's pilot lamp connection, will it still work?

I have restored a Rowenta E5291 heavy clothing iron, a remake of a vintage model, and I changed the pilot lamp's connection. I made this change because this iron can never be turned off unless you ...
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3answers
236 views

Why is this switched power inlet fused on both load and neutral sides?

I've purchased a Schurter 4304.6090 power inlet for a project and am a bit confused by the fuse configuration. The inlet requires two fuses: one on the load side and another on the neutral side of the ...
4
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3answers
1k views

How is transition from three-phase distribution without neutral to three-phase consumption with neutral achieved?

A typical distribution grid supplies 6 or 10 kilovolts AC to a substation near the consumers. This is typically done with a three-phase line without neutral - just three wires going in parallel. Then ...
5
votes
3answers
175 views

Removing solder effectively

I have an Epihpone (Les Paul 100, fairly standard) electric guitar, which over the years have gotten to suffer from a non-functioning bridge pickup. I verified this using an ohm-meter, the result ...
5
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2answers
295 views

Altium says my labels are floating

Been using Altium and multi sheet projects for a while. My latest project involves a lot of signals so I'm trying to keep things tidy using lots of labels, ports, busses. So I have a bus for enable ...
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2answers
70 views

Correct Part for Connect an Two-Pin LED or Switch

Quite simply what I'd like to know is, what is the technical information for the male connector that corresponds to the following plug: The male connectors (headers?) are commonly found on computer ...
1
vote
3answers
361 views

How do the windings in a residential transformer create a neutral and why are the hots opposite phase?

Pretty self-explanatory I think; just wondering why neutral "manifests" from the windings and why it "outputs" (for lack of a better word) a negative-phase hot? I guess my perplexity comes from ...
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2answers
446 views

Can I shorten a length of C9 Christmas lights? [closed]

I have a string of 25 C9 LED Christmas lights, and I'd like to shorten the string. After untangling the string, they seem to be wired like this... simulate this circuit – Schematic ...
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2answers
92 views

How do I put in a volume control on this wired phone headphone set?

I have this headset which I use with a cordless handset. The problem is the volume is way too loud even if I turn it down all the way on the cordless handset. There are no controls on the headset. I ...
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2answers
161 views

My first transformer causing safe fuse to go out

I found a fairly big, old transformer. I unwinded all the coils and winded them again. My primary coil has 20 turns, and the secondary coil has 200 turns. I didn't use any tools while doing this, so ...
0
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4answers
203 views

Can AC current be switched using SPST EM-relay controlling “live” wire alone?

Perhaps the most fundamental question of the day, but here goes. Assuming that I wish to switch (ON/OFF) 3 AC loads, using EM-relay, can a SPST EM-relay (or appropriate rating) be used where only the ...
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1answer
383 views

Connecting RJ11 plug output to Arduino

Newbie question. I have a Davis 7852 Rain collector that measures Rainfall using a Reed switch. The output comes via an RJ11 plug with following pinout Black - Unused Red - Switch terminal Green ...
6
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2answers
264 views

Need a Loud Electrical Component for Magnetic Lock

On our main front door at the Stack Exchange offices we have a glass door with a magnetic lock installed. As is common at offices, visitors can ring a doorbell and then our receptionist will press an ...
4
votes
1answer
219 views

What is this device included in my Arduino parts Kit?

It was included with the light emitting LEDs so I assume it also gives off light? I understand the the shorter prong goes to negative/ground and the positive prong is longer, but this little thing has ...