Search found 5 matches
- Sat Apr 13, 2024 12:03 am
- Forum: Home-made microscope adaptations
- Topic: Searching Cree LED for tiny dimmers
- Replies: 23
- Views: 20941
Re: Searching Cree LED for tiny dimmers
I have made a dimmer with just a mosfet transistor, a variable resistor, capacitor to prevent self oscillation and a fixed resistor, the mosfet conected in series to a led. You can solder it in the air leg to leg and wrap it in insulating tape while keeping stable. Evidently it is totally flicker fr...
- Fri Apr 12, 2024 11:44 pm
- Forum: Specimens, samples and slides
- Topic: Dry Mounted Insect
- Replies: 8
- Views: 3114
Re: Dry Mounted Insect
I'm totally unskilled mounting permanent slides but i'd wish to note that i have succesfully mounted first time a small insect on a ringed slide just dehydrating it on a single step on 96º ethanol and not dry but in low end pva children's glue. Perhaps somebody more skillful in this may explain if s...
- Fri Apr 12, 2024 11:13 pm
- Forum: Illumination Techniques
- Topic: The Lucigen illuminator
- Replies: 8
- Views: 915
The Lucigen illuminator
I have recently adquired a vintage Zeiss Standard 14 that i had to restore to be able to use. It featured a very curious combination of light source and condenser for illumination. The Lucigen illuminator consists on a lamp holder for a 6V 5W tungsten bulb that you can center tilting the bulb holder...
- Mon Apr 08, 2024 9:58 am
- Forum: My microscope
- Topic: DIY Slide Ringing
- Replies: 4
- Views: 3708
Re: DIY Slide Ringing
I have used a round disposable food container cover the diameter of a slide, double sided tape in it, the center is marked by the plastic injection point. And I turned it with my left hand against my keyboard with a small box in front of it making a 90º corner. I ringed with the right hand using nai...
- Mon Apr 08, 2024 9:48 am
- Forum: My microscope
- Topic: Picked up a legacy Zeiss
- Replies: 7
- Views: 2880
Re: Picked up a legacy Zeiss
I have also picked recently a legacy Zeiss. It was an Standard 14 complete with binocular head and 4 objetives. It features compensated "c" eyepieces 12,5x , 3,2x acro objetive, 10x acro, 40x 0,65 acro and a "oel" 100x. Very standard configuration. What was a bit strange was its Lucigen illuminator....