Yes, there were electric lights powered by central stations before Edison’s! Carbon arc lamps saw extensive use throughout the USA and the world from the late 1870s on. – Charles Brush
Museum Of Electricity – Charles Brush
The General Electric Company was formed in 1892. It was the result of a meger between the Edison General electric Company and the Thomson-Houston Company, which themselves incorporated several other companies.
Electricity, technology, and lots of arcs and sparks!
Museum Of Electricity contains Vintage Electrical and Historical images and description. They include the Edison Lamp, Tesla Coils, Lightning and Atmospheric Electricity and the …..
Amazing Jacob’s Ladder
So how do they work? First two conductive metal rods are positioned in a rough “V” shape with a slight space between them at the base. A sufficient voltage differential is provided from a high voltage transformer to breakdown the air in the gap between the rods.
“At the age of 10 we moved to Copenhagen for about 2 years. I had some friends there who knew that I liked old radios so regularly someone brought me one. (See my picture at the main page) Among them was the Bang & Olufsen – Grand Prix 48 K (photo). I liked this radio so much that I wanted to make it work again. There was not much wrong so I got it working. Later when we were back in Eindhoven, I made so many …….”
Franks Electron tube Pages
Frank Philipse – Waalre, the Netherlands.
- Tube Number Systems
- American Substitutes for Foreign Types
- Foreign Substitutes for American Types
The tube data resides on several mirror sites in several countries and they are exactly equal, except for the Poland site which additionally has been equipped with a tube search.
More about Frank’s Experiments
“Back in Eindhoven, there where the 60’s. Radio Luxembourg on my B&O etc. I got interest in guitars and amplifiers. I built several Amps. My first amp was something with the EF11 and the EL3. I also built a copy of the Philips EL6431 Amplifier. (That’s where the output transformer of my B&O radio went) In Eindhoven there was a repair shop called ‘De Radiodokter’. He had some old TV chassis in the display for 5 guilders each. When I had saved enough money, I bought some. Then when I was about 16 I made my first really working TV from these parts.”
Ronald Dekker’s Nixie Tube Projects and Software. He has many interesting projects like “Mixed-Signal” LED clock, The µTracer, a miniature tube curve tracer. A Tiny 80(C)31 Basic Board.
Electronic Projects of Ronald
(Image Below Colored and Enhanced by me- ananth delabs)
NIXIE II A Talking NIXIE Alarm Clock! This Nixie Alarm clock will wake you up with a personal wake-up message or sound. A “wav” file stored in EPROM is played using only a few counters and a DA converter.
The µSCOPE – A poormans OscilloScope
“These days this obviously can be done much simpler. The present generation of micro controllers is so powerful that such a videoscope concept can be realized almost completely in software. Recently I obtained a sample of the 12f675. On examination of the datasheet of this small 8 pins micro controller from Microchip, it appeared that the small package contained all the components of a miniature videoscope. In short the µSCOPE project was born, with as main objective the challenge of implementing such a relatively complex task in this small micro controller. The result summarized on this web page is a fully functional (memory)scope that samples the analogue input signal and subsequently displays it on a normal TV”
Some Audio and other Articles/Projects on Vacuum Tubes or Valves. Also he has made Online Calculators .. Bias Tool, Gain Tool and Low crossover cap.
Vacuum Tube-G Pages from Peter
Some articles written by Alan Kimmel, as it did in the years 1993 to 2004 on the original Tube Labs.
- The Choke Assisted Mu Stage
- Why use the Kimmel mu stage
- 7 A few variations of the mu-stage
Welborne Labs – Wide assortment of DIY components, kits and factory assembled hi-fi gear.
TubeLab – Dedicated to advancing the state of the art in affordable high end audio.
Best of ‘In Practice’ on the web – Articles and resources of long-term interest, including switch-mode power supplies.
Amateur Radio Technical Notebook – GM3SEK
The Triode Board – PC board and Kit for Triode PA control and protection
The Tetrode Boards – PC boards and Kit for Tetrode PA control and protection.
Cost-effective Ferrite Chokes and Baluns
Triode Electronics Store Online
Electron Tubes & Tube Amplifier Parts.. “Worldwide Service Neighborhood Prices” Since 1985
Online Tube Amp Kits Transformers Tubes Capacitors Dynaco Upgrades and Parts
Triode Electronics Store
AA764 Blackface Champ DIY Tube Amp Kit
Kit includes a turret board, High Quality Carbon Comp Resistors, and Sprague Orange Drop or Mallory 150 Series capacitors, our 5F2 champ power transformer, TF103 Output Transformer, Replacement Filter Capacitor ……. etc.
DDDAC 2000 – Audiophile projects
Dedicated Website for Audiophile projects, such as a Diy High End DACs, Loudspeakers, Tube Amplifiers – Doede Douma
- Setting up an Audio Streaming Server (for use with the DDDAC1543 MK2 – USB)
- Gydinel, the Loudspeaker Master Reference ……
- Something completely different: Building your own Home Cinema !!!
TUMOS, the MOSFET Power Amplifier with real Tube sound!
“The DIY of designing and building of your own equipment is not only very satisfying as hobby on itself, but it will save you money, which you can invest in better parts used or parts you cannot build yourself like Turntables, cartridges etc.”