Search found 3262 matches

by mediatechnology
Thu Dec 13, 2018 5:21 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 673
Views: 269981

Re: Entropy

The LED string I just finished troubleshooting is wired similar to most long incandescent strings. Hot and Neutral extend from plug to receptacle end. One end of the light string picks up Hot at the plug end. A third conductor daisy-chains the lamps which pickup the Neutral at the far end. The lamps...
by mediatechnology
Thu Dec 13, 2018 5:09 pm
Forum: Pro Audio Design
Topic: simple stereo extraction from L+R and L-R mid-side?
Replies: 4
Views: 26

Re: simple stereo extraction from L+R and L-R mid-side?

I have a "mono" portable radio with a 3 conductor 1/8" connector.
When you plug a 3 conductor to RCA cable into and monitor the feed the polarity of Right is reversed from Left.
I'm not sure why it does this, but this radio would sound like crap in any venue if used as a "stereo" source.
by mediatechnology
Thu Dec 13, 2018 2:58 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 673
Views: 269981

Re: Entropy

I notice my low key Christmas window display, composed of two cheap strings of christmas lights has one burned out bulb... (I'm guessing its a bulb). Kind of surprised to find it must be wired in parallel to still light. JR I think they are likely series-connected with shunted filaments and possibl...
by mediatechnology
Thu Dec 13, 2018 2:48 pm
Forum: Pro Audio Design
Topic: simple stereo extraction from L+R and L-R mid-side?
Replies: 4
Views: 26

Re: simple stereo extraction from L+R and L-R mid-side?

So what made it sound like crap? In that setting mono, or near mono would be my first choice. A lot of modern stuff is mixed too wide particularly in the low end. Or it contains out-of-polarity elements which have no L+R at all. When mono'd they disappear. The Studer 90° Filter is something that has...
by mediatechnology
Wed Dec 12, 2018 7:51 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 673
Views: 269981

Re: Entropy

Well the male plug end had been allowing water to enter too. I can see where they had left a too-short "creep" distance and it looks like water had been bubbling around that area too. It has a patent number on it: For a waterproof plug. :lol: They paid a lot of attention to the blade end but water c...
by mediatechnology
Wed Dec 12, 2018 6:42 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 673
Views: 269981

Re: Entropy

I'm going to finish tear-down of the plug end and will post pics of that. The receptacle was "sealed" with RTV at the conductor end but I found beads of water inside the case. I think water came through the blade end which had no sealant or gasket. It might have survived the water if they hadn't ben...
by mediatechnology
Wed Dec 12, 2018 3:08 pm
Forum: The Peabody Lounge
Topic: Entropy
Replies: 673
Views: 269981

GE Outdoor "Waterproof" LED Christmas Lights Fire Hazard

What a can or worms... LED Christmas light failure... 1) This assembly is not completely waterproof. 2) The PC board was able to burn without blowing a plug fuse. 3) The component and jumper leads are not trimmed. 4) The crimped ferrules where the leads attach to this board are crimped poorly some o...
by mediatechnology
Wed Dec 12, 2018 12:34 pm
Forum: The Peabody Lounge
Topic: Welcome to the Land of the Free and Sub $2 Gasoline
Replies: 3
Views: 33

Re: Welcome to the Land of the Free and Sub $2 Gasoline

This station was right off I-20, which for our international readers is a major East-West highway.

Considering that it was an Exxon, and so close to '20, I was surprised to see the first sub-$2 there.
by mediatechnology
Tue Dec 11, 2018 5:33 pm
Forum: The Peabody Lounge
Topic: Welcome to the Land of the Free and Sub $2 Gasoline
Replies: 3
Views: 33

Welcome to the Land of the Free and Sub $2 Gasoline

We buy our gas here by the gallon using dollars.

Image

That would be 0.46 euros per litre...
by mediatechnology
Tue Dec 11, 2018 5:15 pm
Forum: Document
Topic: JR's Popular Electronics Articles
Replies: 11
Views: 113

Re: JR's Popular Electronics Articles

Thanks for letting me post these John.
There are other authors - who shall remain nameless - who would have called the police on me. :lol:

I'll look for the filter project.