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The most recent discussions

Dimmer for 4V LED


June 29, 2018, 4:13 am

I have a 4V, 0.75A, 3W power adapter (120V input) that powers a single LED that is too bright. Is there a way to make or purchase a dimmer that could work on the low power side? Thanks -- m-m ... Read more »

MV-to-LV Connection


June 27, 2018, 10:38 am

Hello, all, and a question especially for those who work in AC power distribution: One is provided with two line-line MV (assume 34/19.9 kV or less) distribution lines (L1, L2) and a neutral (N)... Read more »

Fwd: Can LED bulbs be connected to a flasher?


May 15, 2018, 12:35 am

-------- Forwarded Message -------- Subject: Can LED bulbs be connected to a flasher? Date: Mon, 14 May 2018 14:08:24 -0500 From: Bud@Weiser.com Organization: Aioe.org NNTP Server Newsgroups: al... Read more »

jammer for 595-625 MHz


May 12, 2018, 5:42 pm

Could you help me to find this jammer, please? Read more »

URGENT Test for alternating current without multmeter


May 11, 2018, 3:27 am

I have a lenovo n22 laptop. I am posting this message on it. I was watching i a youtube video when I realized that the ac/dc adapter was unplugged, whe n I plugged it back in, my laptop made a errr... Read more »

off topic cross post


March 8, 2018, 11:14 am

an off topic cross post If you think you got it then either use it or lose it. don't expect it like it's your birthright. reiterating: 'use it or lose it' especially in the w ay your forefathers ... Read more »

I like this ... that's all


January 19, 2018, 7:58 pm

https://www.dropbox.com/s/njgmhgchxw48jtt/MIS%20three%20switches%20on%20on%20light%20bulb.tif?dl=0 Simon Read more »

#Pou Achievement Unlocked!


January 18, 2018, 4:44 pm

www.pou.me #Pou Achievement Unlocked: Energize for 1st time ^_^ @PouAlien -- t ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ Read more »

Door Bell Buzzer "tap"


January 17, 2018, 2:35 am

For a remote (from chime) but near transformer for door bell power. https://www.dropbox.com/s/f41mrdcbop1jqa0/MIS%20BASEMENT%20DOOR%20CHIME%20TAP.jpg?dl=0 Read more »

Laser question


January 15, 2018, 3:08 am

45 years ago I was in a bar in Chicago and they had a laser deal that plotted the 2 channels of the sound system as a Lissajous pattern on the back wall. I tried to make one using an old Neon lase... Read more »

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The best rated discussions

12470 to 208 transformer

rating: 5

I can't seem to find a transformer for 12470 pri to 208 sec. Any suggestions? Vendors? I've heard people talk about parallel transformers. If the turn ratios are the same and impedances are the same ... Read more »

Three Phase/Single Phase Voltage Fluctuations

rating: 5

Hi everyone. I hope this is the right group for this post of mine - hoping someone will have some insight to this one. Our house power supply is three phase (i.e. 230v/400v). Since I live in the sout... Read more »

replacing a varistor

rating: 5

I need to replace a varistor on a circuit board and I cant find any markings on a good varistor still on the board. The board consists of several triac circuits which all operate the same type of sol... Read more »

Identifying Transformer Core Overheating Problem

rating: 5

I need assistance with identifying the cause of a transformer core overheating problem. I am not an electrical engineer but I have 20 years of experience in transformer repair. The unit in question ... Read more »

Hard wired home watt meter

rating: 5

Hi I see some products like Kill A Watt that plug into the outlet to monitor device energy usage. I would like to be sure that the person does not take the device out when I am not around and plug ... Read more »

Video interference "60 cycle noise" or "hum bars" retai...

rating: 5

I've have a retail customer with a large TV display. The content they display is generated from a multimedia server with both an NTSC and ATSC outputs. The ATSC signal then feeds a high definitio... Read more »

Why use a ground when the nuetral can do the same thing?

rating: 5
  [ 2 ]

In a typical home breaker box the neutrals and grounds are on the same ground bar. So why if I install an outlet do I need to ground the box? Why couldnt I just take a jumper from the neutral and gro... Read more »

"Growler" armature tester

rating: 5

I have recently aquired an old Allen Electric Type E30 armature tester. It's a simple device but I suspect the wiring has been tampered with/modified. Does anyone know the wiring of these devices? ... Read more »

Actual Ampacity Rating ROMEX SIMPull Type NM-B in a residential attic.

rating: 5

Please help me keep from tearing my hair out. I am installing a subpanel in an existing, small 22 by 8 foot (176 sqft) addition to my home. The original wiring was not done to code and has since b... Read more »

Help/air compressor tripping 20 amp breaker

rating: 5

I have a 58' run of 12/3 wire running to the shed that operated some lights and a small 110v sears 30 gallon air compressor nearly new. The first time or two of turning it on to build air the breake... Read more »

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