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inductive sensor with LED and relay. helpview story

http://forum.allaboutcircuits.com – Good night guys, I have a project and I have doubts in electronics circuit. My idea is as follows. I have 2 lamps, one green and one red LED lamp 127volts I want to put an inductive sensor metal ... example: red lamp is on and passes a metal and the green lamp lights. and the red sensor is off .... not this more driven. lights the red lamp .... (Embedded)

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How are these bulbs wired?view story

http://forum.allaboutcircuits.com – Hello everybody, I live in a house built in the 70s. (Embedded)

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How to make/find a "pecking motion" armview story

http://forum.allaboutcircuits.com – How can I make or buy a device like this? It needs to move up and down, anywhere from a 10 to 90 degree range... pause for a few seconds on the "up" before it goes back down. Is there a servo-like motor or something that already comes with such a programming? I want a "pecking" motion like a bird. (Embedded)

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General Questionview story

http://forum.allaboutcircuits.com – Does anyone know how to test if water is electrified or not? I repaired a pool vacuum today that had as one of its many issues a frayed power cord. I repaired the cord using a water tight shrink tube material that I purchased from my local plumbing supply store today. The guys in their said it is the same stuff they use to repair sump pump power cords that they use in there water feature projects? (Embedded)

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Germanium diodesview story

http://forum.allaboutcircuits.com – Hi all I'm looking at experimenting in radio circuits (crystal/powered receivers/transmitters), mostly out of interest.... I note many varied uses of germanium diodes - is there any particular ones I should get hold of before I start? Help me spend some money on ebay! :) cheers Lee (Embedded)

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Gone fracking!view story

http://forum.allaboutcircuits.com – I recently picked up a job as an electronics tech for a large and apparently well ran frack company! So with that as I learn the industry and have time I plan to do a bit of a blog here relating to what goes on along with the how and why as I learn it. Today is my first stay at a man camp and I have to say this one is very nice! All you can eat buffet 24 hours a day for free! (Embedded)

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Found a Lighting Fixture and have no clue how to wire it.view story

http://forum.allaboutcircuits.com – My first post on AllAboutCircuits.com is a fairly simple one. I found this lighting fixture on the side of the road no too long ago, and finally spent some time to disassemble it to get a better look. (Embedded)

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Laptops Running on Portable Generatorsview story

http://forum.allaboutcircuits.com – Hey Guys, I was just wondering if anybody has had any experience with laptops being damaged by portable generators and if so, what is the cure? I have a friend of mine who goes camping and has burned out two laptops on his generator. I understand the laptop needs a sine wave and not a square wave signal and that it can cause damage. (Embedded)

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Colpitts Oscillator Frustrationview story

http://forum.allaboutcircuits.com – Hey everyone! Long time lurker, first time poster. I'm a fourth year electrical engineering student, my major is geared more towards power applications/renewable energy but have always been interesting in radio engineering (it's what actually got me into electrical engineering) and I'm a bit ashamed to ask such a basic question. (Embedded)

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Designing a homemade electric lighterview story

http://forum.allaboutcircuits.com – I'm trying to make an electric lighter ( like this http://imgur.com/a/wg8q7) using the framework of this guide. http://www.instructables.com/id/Make...iron/?ALLSTEPS except mine will have a few more feature and the soldering tip will be replaced with nichrome most likely. Theres is just a few things that I am stuck on -First, Is nichrome the best material to use as the heating element? (Embedded)

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Leds in parallelview story

http://forum.allaboutcircuits.com – Hi I'm new to electronics. I have a question. I need to connect 512 "PIXEL LEDs" (in parallel) Specifications for LED PIXEL are: http://www.aliexpress.com/item/1000p...25849.html?s=p. According to my calculations, I need a source of 20 A (actually 15.36 A). These LEDs are wired in parallel with a 2mm cable. There would be a problem? Supports those drivers these amps? (Embedded)

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Jeopardy buzzer system helpview story

http://forum.allaboutcircuits.com – How would I make a circuit for 3 players for Jeopardy? (Embedded)