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The most recent discussions

High voltage demonstration

October 29, 2019, 6:09 am

This is a high voltage demonstration using an inexpensive car ignition coil being driven by a variable frequency, duty cycle and amplitude 555 based mosfet circuit. Circuit schematic: https://w... Read more »

(OT) AnonCoward - My home brew circuit; an adjustable coil driver

October 29, 2019, 4:36 am

Here's my video: https://youtu.be/KcWrrlTRFdM And this is the schematic to my circuit: https://www.imgpaste.net/image/r0yOs http://al.howardknight.net/?ID=157172565900 Now take a look at t... Read more »

Where do you source 35 Amp 220VAC circuit breakers that are NOT in typical ...

October 27, 2019, 9:08 pm

Where do you source circuit breakers that are NOT in typical box stores? o Carling AA3-B0-24-635-5D1-C (do you have a decoder for that number?) PG&E has currently cut the power to us in California ... Read more »

Re: Left-wing socialism so good...PG&E Imposes New Power Shutoffs In Pa...

October 24, 2019, 4:32 am

On Thu, 24 Oct 2019 03:31:05 -0000 (UTC), Leroy N. Soetoro Sue the PoCo into bankruptcy and this is what you should expect. Read more »

1500 mile e-car for Austin in UK non-toxic fuel cell

October 20, 2019, 5:48 am

https://www.dailymail.co.uk/news/article-7592485/Father-eight-invents-electric-car-battery-drivers-1-500-miles-without-charging-it.html Sounds too good to be true, but maybe. Read more »

Homebrew high voltage coil driver circuit video

October 19, 2019, 8:07 am

https://youtu.be/KcWrrlTRFdM Just a little demonstration... -- Up until 1948 there was a gold medal for town planning in the Olympics. Read more »

Re: Left-wing socialism so good...PG&E slammed for cutting power to mil...

October 14, 2019, 3:36 am

On Mon, 14 Oct 2019 01:42:12 -0000 (UTC), Leroy N. Soetoro Only a Californian could sue the power company into bankruptcy and then ask why the lights are out. Read more »

Re: Left-wing socialism so good...Incompetent recall target Gavin Newsom bl...

October 12, 2019, 5:59 am

On Sat, 12 Oct 2019 03:31:26 -0000 (UTC), Leroy N. Soetoro What are you going to do then? I can't imagine anyone who thinks there is money in providing California electricity unless they can rais... Read more »

Re: Left-wing socialism so good...PG&E: Power could be shut off for 600...

October 9, 2019, 3:11 am

On Wed, 9 Oct 2019 03:03:24 -0000 (UTC), Leroy N. Soetoro They got their ass sued off for the Camp fire and now they are showing their disdain for the people who sued them. You know, you can't be... Read more »

n00b question about "What is a phase?"

October 4, 2019, 2:21 am

Hi, Would someone be kind enough to help me understand the difference between a phase and lines? I think that a phase is what is carried by a pair of wires, a circuit, that consists of a two li... Read more »

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The best rated discussions

smps controller IC datasheet?

rating: 5

oem power supply, 31.5 vdc 1.5 A. I want to change the output to 24 v. There is one 8-pin IC, labeled: 230D1 PUICO I don't see a datasheet anywhere for this. Any ideas? Thanks, Dave Read more »

Strain Gauge Oscilloscope Help

rating: 5

I am using Vishay 120 ohm Strain Gauges, (specifically EA-06-062AP-120) to try and generalize certain readings taken from aircraft engines. We have set up a small device to vibrate to simulate an eng... Read more »

Lightning protection and residential landscape lighting

rating: 5

Hi, My house is on a hill which is rocky. After getting hit at least twice in the past two years by lightning, I installed a lighting protection system. On each occasion I was lucky in that the only ... Read more »

Excessive brush wear on DC motor.

rating: 5

Greetings! We have a field excitation DC motor on our SAMP machine. We are experiencing 1 brush on the DC motor to be wearing out a lot faster than the other 3. (My understanding is that the brush t... Read more »

Racking out of motor starter?? How?

rating: 5

I need to take the overcurrents off a motor starter in an MCC. The problem I have is that the motor starter is racked into a live 600 Volt bus. I want to know if I can rack out the motor starter with... Read more »


rating: 5

Hi: Has anyone heard about what ever became of ETCON's AFCI Tester (or more recently: ETCON AF120 ARC-FAULT TRIPPER AND RECEPTACLE TESTER)? Mike Holt's blog. As follows... Underwriters Laboratorie... Read more »

280V motor on 230V circuit

rating: 5
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I have a broken pool motor [magnetek y56y] which will cost a bundle to fix or repair. While doing a search on the web, I found the same model (really cheap) but wired for 280V, instead of the 230 V l... Read more »

Solutions to problems in Protective Relaying Principles and Applications by...

rating: 5

I own Protective Relaying Principles and Applications by J. Lewis Blackburn and was wondering if anyone out there had the solutions manual for the book. I am not a student looking to cheat in a clas... Read more »

3-phase corner-grounded delta questions

rating: 5

When wiring up electrical service configured as 3-phase corner-grounded delta, it would seem that the appropriate way to connect overcurrent protection would be to make the 2 ungrounded wired breakab... Read more »

Linear current booster

rating: 5

Wondering where I might find a schematic for a home brew linear current booster to control PV module power to a very small 12V 2.5A bilge pump? My googling didn't turn up anything. Chuck Read more »

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