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Old 07-27-2018, 12:02 PM   #21
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I think I finally have a certain member's dysfunction sorted out.

He reads a reasonably well composed question, becomes inspired by 3 or 4 words of it, then proceeds to write a pages long response that has little to nothing to do with the original question.

I'm not sure if it's an attention deficit or early onset dementia.

I'll stick to electrical work. I don't know much about doctoring.
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Old 07-27-2018, 12:05 PM   #22
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When your 555 stops working and the fix it shop tells you it's toast, and it's time to become a real electrician and you have to rebuild it yourself, you will need to purchase and wire in a full wave as part of your " I can do this" rebuild, since the original one is soldered into one of the three existing boards you tossed into the trash. That's where Manfred comes in handy.
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Old 07-27-2018, 01:17 PM   #23
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Originally Posted by MechanicalDVR View Post
Agreed!
Why invest time building one when one can be purchased easily and cheaper.
For glory and future pissing contests.

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Old 07-27-2018, 02:46 PM   #24
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Thats' probably not going to happen too often for an Electrician ... it's more of an Electronics Tech type of thing ... example : My Hobby is building , Troubleshooting and Servicing Guitar amplifiers. The common use of Vacuum Tube circuits are still used in 2018 as Guitar Nerds claim that only Technology from the 1940's will do.
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Old 07-27-2018, 02:55 PM   #25
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Quote:
Originally Posted by macmikeman View Post
When your 555 stops working and the fix it shop tells you it's toast, and it's time to become a real electrician and you have to rebuild it yourself, you will need to purchase and wire in a full wave as part of your " I can do this" rebuild, since the original one is soldered into one of the three existing boards you tossed into the trash. That's where Manfred comes in handy.
How long after kicking it to make it work does this happen??
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Old 07-27-2018, 03:21 PM   #26
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Originally Posted by just the cowboy View Post
On base we were not allowed to bring a wiggy on board a ship, we were told they blow up. We had to use a neon tester that showed 60 or 400 hz as well as 12, 24,120,240,480,600 volts. 8 neon lights in a dark area, liked my click of a wiggy better.
I know “exactly” what tester your referring to.
I just retired it from my bag last month when I got a new Work truck. Haven’t used it here in more years then I can count. I was a GM in the old green glass house.
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Old 07-27-2018, 06:44 PM   #27
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Quote:
Originally Posted by macmikeman View Post
8 neon lights sounds like a very handy and useful tool , just like the vastly advanced Supco 500 megger.
This is what heís talking about.
So advanced that itís name is secret.
It also allows coffee pots to continue operating in any weather condition.
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Old 07-27-2018, 07:57 PM   #28
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Built 1 in my life to quiet an an electric door strike being operated by a small 16vac transformer. Condo owner next to the door hated the noise when the other residents buzzed people in and I had a bag of diodes leftover in the truck from a fire alarm project. Buy them preassembled quite often to make cheap dimmable drivers for LED tape
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Old 07-27-2018, 09:51 PM   #29
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For glory and future pissing contests.
Right up until something fries and they blame the homemade equipment for the problem.
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Old 07-28-2018, 06:53 AM   #30
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Quite a while back I saw a very large set of diodes, like the size of a 400amp fuses setup in the back of a pickup truck connected to a generator and a transformer.
It was one of the most steampunk welders I have ever seen. It looked homemade to me.
I've seen the insides of welders and don't remember them looking like that at all.
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Old 07-28-2018, 07:19 AM   #31
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i used to build them as a teaching aid
we built an electric rat trap with 3 large capacitors, a bridge rectifier spaces wire grid, and an old telephone generator.

" warning that thing could knock you on your arse if not kill ya"
very effective too.
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Old 07-28-2018, 09:30 AM   #32
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Quote:
Originally Posted by MDShunk View Post
Required? Probably never. DC power supplies are a catalog item. It's akin to asking how often electricians build their own breakers or light fixtures.
I built my own light fixture once.

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