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

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0
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2answers
30 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 ...
0
votes
1answer
29 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 ...
0
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1answer
99 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 ...
0
votes
0answers
40 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 ...
-2
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0answers
34 views

3 Speed Motor Wiring

I have a 3 speed motor and cannot understand the diagram of wiring which is printed on it. Where should I connect the capacitor and how should it connect the motor to AC power?
0
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0answers
34 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 ...
-2
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1answer
72 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
32 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 ...
0
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3answers
76 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
66 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 ...
0
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2answers
66 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 ...
1
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2answers
136 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 ...
0
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2answers
48 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 ...
0
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2answers
286 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?
1
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1answer
81 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: ...
-1
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1answer
49 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?
21
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3answers
819 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?
0
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1answer
43 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 ...
1
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2answers
96 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. ...
0
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1answer
69 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 ...
1
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1answer
99 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
votes
1answer
63 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 ...
1
vote
1answer
119 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
140 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 ...
1
vote
1answer
89 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
votes
2answers
277 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. ...
1
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1answer
87 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
votes
2answers
225 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
93 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 ...
0
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3answers
200 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 ...
3
votes
3answers
887 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
172 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 ...
4
votes
2answers
250 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 ...
0
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2answers
69 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
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3answers
287 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
420 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 ...
0
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2answers
89 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 ...
-1
votes
2answers
156 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
votes
4answers
188 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 ...
1
vote
1answer
358 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
votes
2answers
251 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
207 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 ...
0
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0answers
190 views

Use Dell Laptop internal speakers with Raspberry Pi

I have some speakers from an old Dell Latitude D600 that I and a friend took apart (his brother had managed to fry the motherboard?!!?) and so we salvaged some parts, one of which is the speakers. ...
0
votes
2answers
172 views

What can I use for temporary wiring harness?

I was a computer science major in college, and dabbled in EE related stuff where necessary for coursework, but I'm working on a small Arduino project for Halloween and need some advice. I've got an ...
0
votes
1answer
341 views

wiring a blender motor

So I've salvaged a motor from a blender that was not in use- the only thing is I haven't got a clue how I would wire it. I want to make sure I have the correct setup, since it operates at 230V. So my ...
0
votes
1answer
178 views

8 ohm amp to 4 ohm speaker

I got amp which produce 2 x 30W output on 8 ohm. Is it possible for each channel to connect 60W 4ohm speaker? Is it possible to do such thing and how I can wire it?
0
votes
1answer
107 views

Is grounding needed when using adapter to phone?

I am doing research on an audio plug. I wonder, is it a must to connect grounding circuit from handphone to the earphone if we use an adapter (image 1). Or can I do the connection like in image 2? ...
3
votes
1answer
135 views

Connecting Arduino to GPS Chip with Single Pin

I was given an old Garmin GPS unit from a friend and decided to tinker around with it and see if I could connect the GPS chip up to my Arduino to use with their GPS library. Problem is, the chip ...
10
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3answers
459 views

What is the difference in this specific breadboard wiring?

As an absolute layperson in electronics I just found out that an LED only lights up when connected like in figure 1 but not when connected like in figure 2. And I just don't get why? I know an LED is ...
0
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2answers
729 views

How to do a loopback test of a parallel port?

I have connected pin 2 to pin 3, pin 4 to pin 5, and pin 6 to pin 20. Can someone please tell me if this is the correct wiring for loopback testing a parallel port? Ia am using BurnInTest 7.1 Pro by ...