Re: B& L Dynazoom question

Let me say again, I am not experienced in microscopy, so I do not want
to disseminate information that may not be correct.

My scope came already modified for 120 V., and without an illumination
control.
It has the sliding tube just as you describe. The original 20V lamp had
an added flange that engaged the 3 pins in the mounting system. This
flange was either soldered or crimped on to the lamp base. The previous
owner bought a new bulb and modified it to fit.
This bulb is about 6W, and had a bayonet base, i.e. 2 pins of equal
height. The pins were filed off and the new bulb was soldered to the
mounding flange.
I think that this bulb was more than adequate for brightfield and, at
maximum brightness, for my usage of darkfield.
In modifying this bulb the original owner removed the identifying
numbers so all I have to go on is the operating amp draw, which is .05
A (.05X120=6W)
But I am of the "more is better" philosophy so I ordered a 30W bulb
which has the same base diameter, and modified it in a similar fashion.
http://www.microscopebulbsplus.com/catalog/c4_p2.html

A good source for original bulbs and their detailed dimensions is at:
http://www.donsbulbs.com/cgi-bin/r/t.pl/bulbdatasearch.html

Maybe from your description the bayonet (i.e. 2 pin) base would fit
right in without modification?

I think a great project would be to use several Luxeon leds instead of
the incandescent.
This would take some work, expense, and expertise, but the light would
be very bright, controllable, and of a higher Kelvin temperature, I
think. They are rather focussed bulbs, so alignment with the existing
optical system might take some work.

hakelly

.

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