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Well ...? The normal thing to do was to power them from the AC mains - but with a series resistor, of course!? They were used as pilot lamps for electronic equipment. Unfortunately, they tended to

I believe it is true that some neon bulbs have a tiny amount of radioactive material inside to improve (lower) the firing voltage.? I read or heard that from a number of sources. But I can't help you

hi, I would like to understand how the various *PowerBank work for mobile phones*.... Let me explain better, I wanted to feed a classic flashing light with The usual timer with IC 555 and an LED

Try this one. https://www.slideshare.net/clickengenharia/arduino-nanomanual23

Complements of Github.

Look here: https://docs.arduino.cc/learn/hardware/nano-pcb-guide/ Sam Reaves ARS W3OHM Owner / Moderator of: LeCroy Owners Group on Groups.io Sencore Owners Group on Groups.io Sprint Layout Group on

Hi all , I have a project that uses an arduino nano , I have not yet mastered pcb design , I am after a jped to scale if poss of a nano footprint pic,for a sort of pin brakeout so i can toner transfer

A number of years ago I worked on a rather large machine that was supposed to assemble various plastic bits, a drop or two of mercury, and a silver pellet or two, to make cartridges for dental

I used to handle one-liter bottles= 13.6kg= 30lbs of mercury for industrial applications. That was over 60 years ago. Then I was involved with mercury batteries. Bertho From: [email protected]

When I was about 12 I had my appendix removed. One of the nurses broke a thermometer and I played with the mercury on a tray with my fingers! 73, Leon G1HSM

And more OT - how many of us have played with blobs of mercury or just had some in a dish on the desk? Donald.

OT: Asbestos used to be considered wonderful stuff.? Nobody knew anything was wrong. I used to have a sample of the raw fibers.? You could buy samples of it, for people who collected stuff like

When I was in 7th grade I took "electric shop" (closest I could get to electronics in that school) and one of the projects done there was a cooker that had a sheet metal frame, a square of asbestos

I actually ran across a video that referrences this: https://www.youtube.com/watch?v=jH2a6CeTFoU The guy does the potato trick with several different voltages, with varying results... -- Member of the

Awesome video! I've been doing kinda the same thing. Kinda ? but with really really really really old information about crystal energy. Can't simply choose to believe it or not believe. Gonna have

Maybe you actually got some good stuff. Motorola used Teflon coated copper wires with a steel core in some of the transceivers. Of course, if you are looking for the lowest resistance you do not want

Check this out: https://www.youtube.com/watch?v=jH2a6CeTFoU Now I'm gonna have to check my clip leads... Bought a couple of rolls of small wire at a dollar store a while back, they are definitely

Cool- Thanks for posting

As a technology, the conversion of a C program to Verilog is twenty or thirty years old. Still, it was new to me and I had a great time figuring it out. :) A write up of the C-to-Verilog process is

I expect that beyond the power supply and output tubes (plus the phase splitter, etc.) the input end of it will be heavily customized. Maybe clone a Fender or somesuch? The project is pretty low on my