|
Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members. |
|
Thread Tools |
2nd Jun 2008, 6:38 pm | #1 |
Nonode
Join Date: Aug 2007
Location: Walsall Wood, Aldridge, Walsall, UK.
Posts: 2,868
|
Mr. Michaelis's Projects!
Hi!
Has anyone ever had a go at Martin Michealis's Projects? He started the ball rolling in Autumn 1961 with a massive great "Experimenter's Power Pack" in PW then progressed through the pages of PW and PT with Pulse Generators, Geiger Counters, Valve and Transistor Analysers (not just "testers"), a "Tritch" for Field-sequential CTV experiments, and several squigglegraphs of assorted complexity! I know I shouldn't belittle my betters as Mr. Michealis has forgotton more about circuit design than I can ever hope to learn in my lifetime, but I have to confess to a few disrespectful titters at some of his panel-labelling, as he sometimes lettered his controls in a mixture of English and German!!! For all that though he always explained his projects very thoroughly and tried to make sure there weren't any annoying uncertainties, but I think he fell down with his "Videoscope MV3" - I think this relied too much on professionally-produced metalwork! His other forte was his Mains Transformers - did he have a friendly Coil Winders near to where he lived?! His trannys always had the most odd assortment of windings and HT tappings that none of the contemporary suppliers of the time admitted to stocking - and you can't get the Mains Transformer kits any more!!! Chris Williams Last edited by Chris55000; 2nd Jun 2008 at 6:49 pm. |
2nd Jun 2008, 6:48 pm | #2 |
Pentode
Join Date: May 2008
Location: Leeds, West Yorkshire, UK.
Posts: 236
|
Re: Mr. Michealis's Projects!
Funny you should mention this... I've been wanting to construct said Power Pack since I first came across Jan 1962 PW, and have been steadily amassing the following issues since. It doesn't half run on - 5 or 6 months in total I think. I got them all at Harpenden, and am now equipped to make a start - parts, woodwork and source of huge amounts of free time notwithstanding
|
2nd Jun 2008, 7:03 pm | #3 |
Nonode
Join Date: Aug 2007
Location: Walsall Wood, Aldridge, Walsall, UK.
Posts: 2,868
|
Re: Mr. Michealis's Projects!
Hi!
Best Of Luck Sir! Can I draw your attention to his Follow-Up Article - "Neons in the Experimenters Power Pack" - this explains thoroughly how the neons can oscillate under certain conditions of current-starvation due to their inherent negative-resistance characteristic that occurs just after their striking-point. The article documents a number of changes that are worth incorporating from the outset! I had thought of building one myself but I don't have enough valved equipment to warrant the cost! Chris Williams |
2nd Jun 2008, 8:45 pm | #4 | ||
Pentode
Join Date: May 2008
Location: Leeds, West Yorkshire, UK.
Posts: 236
|
Re: Mr. Michealis's Projects!
Why thank you! I'll be sure to keep the forum posted as to how it goes, when I finally get round to making a start on it
Quote:
Quote:
I could be tempted to scan this series of articles and post them actually, if anyone else would be interested in building this beast? |
||
4th Jun 2008, 12:06 am | #5 |
Octode
Join Date: Nov 2004
Location: Hebden Bridge, West Yorkshire, UK.
Posts: 1,885
|
Re: Mr. Michaelis's Projects!
Please do - I'm in the process of trying to get a decent bench PSU setup
Dom |
16th Jun 2008, 12:16 am | #6 |
Pentode
Join Date: May 2008
Location: Leeds, West Yorkshire, UK.
Posts: 236
|
Re: Mr. Michaelis's Projects!
Right ho - I'll get onto it (might be a few days).
|