POWER SUPPLY MANUAL/ INFO

[H.J.G.]

Hi All,
Now getting ready to wire up my 900 x 600 laser, the laser power unit is labelled as Jupiter co. model BH-80w . The spec according to the label is 30kv @ 26mA max., I am unable to find any info for this unit despite search on L.O. website or Google search. it has 3 leds on unit red,yellow, & green , the red is labelled laser which presumably lights when the laser fires the yellow is marked P (power on ? ) and a green led marked L ( ????).
It also has a press button marked text ( did they mean test) and an adj pot which is accessed from the side casing. Do I need to adjust this pot , or has it been factory set?
I am going to be using it on 80w reci Z2 tube, is this power unit the same as the reci DY10?

Thanks

Henry

[AndyKunz]

Hi Henry,

That's the same supply I have in my machine. Take a look at the pictures on RCG and see if they don't answer your questions.

I did not need to adjust anything on mine. I have a 60W tube, though.

Andy

[daniel.macke]

Hello,
I have the same power supply Jupiter 80W, and I use it with a RECI Z2 tube. They work perfectly without any adjustment. The max recommanded current for the tube (26mA) is reached with about 4V on the analog input, I never tried to get more.
Regards.
Daniel

[H.J.G.]

HI Andy & Daniel,
Thanks for the info, I think I am going to do the following
1/ Note and mark where the pot currently is
2/ connect a pot from +5v to ground and feed the wiper to the "in" connexion, increase the voltage in to max of 5 volts steadily whilst observing laser current start adj pot to give 26mA at 5v
This will ensure that I can never exceed 26 mA even with 100% signal from AWC 608.
3 / test fire from AWC 608 at max power and check current is at 26mA, if less readjust pot .
I think that due to supply voltage variations (uk 220-240v) this would help to get it spot on.
Had another thought about the "L" led this could refer to the L in TTL either high or low connexion, so this led may possibly light on an active signal ( which seems to be recommended as a low) in the threads I have read.
I cannot see a problem with the above but I am open to ideas

regards
Henry

[AndyKunz]

Have you looked at the connection diagram Marco posted? It shows how to connect all the wires.

The photo below shows as well. L connects to TTL, P is Protect (water), G is GND, and IN is PWM. Follow the orange, blue, black, and yellow leads between PS on the right and controller on the left.

Andy

http://static.rcgroups.net/forums/attac ... CF0882.jpg

[H.J.G.]

Andy that picture makes it totally clear, thanks again. Just ordered a new 50mA meter as the one I have presently has a full scale of 100 mA which would be harder to read in the 26mA or less region.
Like to see the needle dancing in the middle.

[AndyKunz]

Andy that picture makes it totally clear, thanks again.

You're welcome. This is exactly the reason I took the photo, so somebody else could refer to it.

Andy