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87435

Re: Looking for black stage bracket for older Zeiss WL model microsc

A big THANK YOU to all the forum post replies as well as the folks who contacted me off list...as a result of the great folks here I was able to obtain not
clifforddward
8:07 AM
#87435
 
87434

Re: Fine focus adjustment mechanism

I think you are doing about all you can if this is just a dried lubrication problem... Patience... The Liquid Wrench should surely do it's job, it is very
billbillt_2000
Aug 26
#87434
 
87433

Re: Fine focus adjustment mechanism

Thank you for the valuable information. I laid the Tiyoda sideways and turned the fine focus nob. It moves smoothly in the direction that raises the head. Now,
optotinker
Aug 26
#87433
 
87432

Re: DIY Balplan transformer lighting control

Yes but a standard fan speed control (dimmer) operating through a magnetic transformer will have much of the high frequency components filtered out. Randall
rbuck
Aug 26
#87432
 
87431

Re: Looking for Stage Bracket for black Zeiss WL microscope...

Hi Chris, Sounds like a great project; I have a black WL and it is a pleasure just to look at it . I have seen stage brackets pass through eBay regularly.
rbuck
Aug 26
#87431
 
87430

Re: DIY Balplan transformer lighting control

Hi,Your point about heat is very important.  High power rheostats are expensive and require large heat sinks.  Use of DC, high current series pass
mel lieberman
Aug 26
#87430
 
87429

Re: Looking for Stage Bracket for black Zeiss WL microscope...

Hi Cliff, These are readily available on eBay. Search using Zeiss stage carrier Or Zeiss quick release stage bracket Or some such terms. You are
Paul Martin
Aug 26
#87429
 
87428

Re: DIY Balplan transformer lighting control

Not to mention that bringing the tungsten filament up slowly to its correct hot resistance will benefit its lifetime vs. the high cold-resistance inrush if
geoelectronics
Aug 25
#87428
 
87427

Re: DIY Balplan transformer lighting control

Interesting, that's why I asked. On the controller, a Variac transformer in the primary is a standard way to vary AC output on a transformer (in other
geoelectronics
Aug 25
#87427
 
87426

Re: Fine focus adjustment mechanism

I don't know the Tiyoda, but many other microscopes use gravity. Thickened grease certainly sounds like the problem. If the sliding action is by means of
graham_comptonuk
Aug 25
#87426
 
87425

Re: DIY Balplan transformer lighting control

I've been puzzling why DC might be unsuitable. The only reason I can think of is that it might cause tungsten to evaporate more from one end of the filament
graham_comptonuk
Aug 25
#87425
 
87424

Leitz wetzler #413714

I have a binocular Leitz microscope that is missing the stage attachment used for hold slides. Does anyone have one sitting around that would wish to sell to
amischangel
Aug 25
#87424
 
87423

Re: Looking for black stage bracket for older Zeiss WL model microsc

Hi Cliff, The good news is that the WL stage bracket is exactly the same as that of the commoner Universal and Photomicroscope. Early versions are black, later
Peter Webber
Aug 25
#87423
 
87422

Re: DIY Balplan transformer lighting control

Hi Geo, It is splitting hairs but I read in an old GE manual that some filaments are specifically designed for AC. They are made by first coiling the tungsten
rbuck
Aug 25
#87422
 
87421

Re: DIY Balplan transformer lighting control

If it works then use it. That is basically all these high dollar power supplies for microscopes are. Besides the high output ones.I used a 12v 20 amp dc one
John Spicer
Aug 25
#87421
 
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