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Pifco Xmas tree lights

I have been called uppon by SWMBO to repair her Pifco Xmas tree lights which she purchased over 5 years ago. (Yes, we h...
16 comments posted 4yrs
posted by headstone255
16 comments posted 4yrs posted by headstone255

OT Nuclear U-Boats; how do they condense the steam?

After following the Vigil TV series (with all its reported errors) and also the prog on HMS Trenchard, when a Brit U-bo...
81 comments posted 4yrs
posted by headstone255
81 comments posted 4yrs posted by headstone255

need help with an electromagetic field project

hello can someone help me with an issue am having while creating an electromagnetic field with 2 12v 320ohm relays.
2 comments posted 5yrs
posted by deninallbani1994
2 comments posted 5yrs posted by deninallbani1994

Dino DIni does electronic stream

Programming a PIC to flash LED's https://www.youtube.com/watch?v=-3rE1mqYsB4
0 comments posted 5yrs
posted by mike
0 comments posted 5yrs posted by mike

HVDC line grounding system question

There is a long HVDC power line from northern Quebec Canada to Ayer, Massachusetts USA. It operates at either +/- 375 k...
4 comments posted 5yrs
posted by moroney
4 comments posted 5yrs posted by moroney

What kind of amp do I need

I bought a new TV and like most now, they don't have a line level output. I bought a digital to analog adapter to drive...
12 comments posted 5yrs
posted by gfretwell
12 comments posted 5yrs posted by gfretwell

1.5 VDC Pseudocell

This project shows how to build a 1.5 VDC pseudocell to take the place of an AA sized battery. The mechanical aspect of...
22 comments posted 5yrs
posted by g
22 comments posted 5yrs posted by g

Composite video

Dumb question Why won't a TV distribution amp pass this? It sounds like it ought to be up in the RF band. I have a comp...
3 comments posted 5yrs
posted by gfretwell
3 comments posted 5yrs posted by gfretwell

electronic ballast woes...

One of my clients who is a hairdresser bought one of these cheap chinese sterilizers for sterilizing her scissors etc.w...
0 comments posted 5yrs
posted by noone
0 comments posted 5yrs posted by noone

Rhode & Schwarz - Website Down?

Hello, all. I haven't been able to access the subject's website for 2 weeks now. Assuming the problem isn't on my end w...
3 comments posted 6yrs
posted by arl_123234
3 comments posted 6yrs posted by arl_123234

Power Factor Correction

Hello, all. I'm an EE by trade but have never worked with, nor designed, AC power distribution systems. On overhead med...
21 comments posted 6yrs
posted by arl_123234
21 comments posted 6yrs posted by arl_123234

Dynamo

Figuratively speaking the rise decided by the run needs reworking.
1 comments posted 6yrs
posted by anonymous
1 comments posted 6yrs posted by anonymous

Negative 48 Volts DC

Is anyone willing to explain Negative 48 Volts DC? I'm trying to learn about it because we're using it for a few things...
27 comments posted 6yrs
posted by gtaylor
27 comments posted 6yrs posted by gtaylor