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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)

9
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)

9
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)

9
Glitches on cd 4013view story

http://forum.allaboutcircuits.com – I am trying use one CD4013B as a toggle switch . PIN 2 tied to pin5 Pin3 clock to pulse varying from 0 to 12 v PIN 4,6,7 to GND Pin 14 To 12 V When I power on the circuit a glitch, generate at pin 1 , 12 V , How can I do for eliminate this effect ? Pin 1 only must be to begining at 0 V not 12 V. Thank you (Embedded)

9
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)

9
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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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)

9
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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what is required to built mp3 player using pic18f4550view story

http://forum.allaboutcircuits.com – hello i have think to implement mp3 player but i don't which algorithm need to follow and which are the minimum require hardware needed. i am using pic18f4550 and xc compiler. (Embedded)

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Source PFview story

http://forum.allaboutcircuits.com – I have a question regarding the terminology used when specifying power factor for sources vs. loads. For inductive loads, the power factor is assumed to be *lagging*, with positive Q, and "absorbing" VARs. For capacitive loads, the power factor is assumed to be *leading*, with negative Q, and "producing" VARs. (Embedded)