Uniphase Argon Controller

[marconi]

I had to finish one of those unfinished projects

This one was for a controller for my Uniphase 2210 Argon laser
First after gloating over the plans here:
http://repairfaq.ece.drexel.edu/sam/...sc.htm#asccu1r
I had made it work ok.. for some reason the LCD Panel meter I had
would not work directly from the +15volts at less than 40ma available
from the supply without damage.. it wasnt a TRUE common isolated unit.
And it wouldnt work using the same grounds...strange,, headscatching time >>>

After a year goes by, tonite I decided to use a small DC to DC converter
to supply the power to the LCD panel.
My unit looks looks like this:


One circuit I could have used was Kevins (junktronix)


But since I had already made it from sams, I continued with mine
First , I had to acquire a LCD PM that had separate signal (-) input
from the 9v power (-) input ... Isolated, because we are measuring current
and power meter output mV.
I found a cheap $5 one off ebay..
After selecting the correct values of resistance for the meter scale
..I wanted 2.00volts to read 20.0 on the display during Amps
and 200 during mW , ..
this was easy as their is a decimal point
jumper selecting on the board...nice.

Then, I added a Datel DC/DC converter BWR-15/100-D12 this unit is real small
it measures 20mm by 32mm.
This takes care of isolating the common and (-) inputs for the LCD meter.
which takes +7 to 15volts in and makes +/- 15volts out at 100ma
we only need one of these outputs..
I used one to drive a small 9volt regulator for the LCD panel power.. total current draw was only 18ma.. nice again.
If I had tried to use anything else , that would have meant
to use an external power supply , which I didnt want to do.!!!
If I did I would have used an LED display..

This thing works...
I did have to calibrate my meter to read correct milliwatts
a simple voltage divider fixed that!!!
anyway...
After a delay of about 30seconds ..
In the idle mode my unit draws 3.8 amps at puts out around 5mW
In the Current mode at 9.5 Amps I get almost 50mW
I could go to 12amps but whats the point !!!
This tube is new and I dont want to ruin it..
In the Light mode adjustable up to 6.7 amps I get 22mW

My circuit here:

[Genesis]

hi
i have choose to insulate my laser controller from the laser supply too. because there is lot of high voltage in the PSU
i have used ISO122 from Burr Brown for this

[marconi]

Hi Genesis

Welcome aboard ... Glad to see you here...

Those ISO122's are great little units..
I had the Datels laying around so I used it.

[Genesis]

thank you Marconi

[marconi]

Genesis

I just looked at your controllers ,, Very nice

[Aidan]

Genesis :

AWSUM LCD readout systems you have. Laser \ PC.

Very good man!

[Genesis]

thank you
now i work on my laser harp last test video >

[liteglow]

thank you
now i work on my laser harp last test video >

WTF is that ?!?

That have to be fake ... :roll: :roll: :roll:

That is damn cool !
Almost like my idea of "moving-beams" ..
I once got a idea of interactive laser beams, when you grab them with your hand you move them

[Genesis]

this is not a fake you have more infos at the link in my signature
i have used the harp in germany at the regensburg meeting of laserfreak and the harp work really