RF excited CO2 lasers

Hemlock_Mike · Dec 11, 2008

I learned long ago that for many applications, a transistor is still a transistor within a large spec group. If it works and the heat isn't too bad ----- Success ;D As I said -- I knew you could do it !!!

Mike

turtlecannon · Dec 11, 2008

I'm planning on buying one of these lasers within the next day or so. What do you think about running it with 5 of
these?

Cyparagon · Dec 11, 2008

That's 20 minutes of battery time at 14A. Not too bad.

turtlecannon · Dec 11, 2008

That's what I was thinking. It wouldn't be super expensive either and you could probably fit 5 of those in a backpack.

nightstick · Dec 11, 2008

that would work,

I run mine on a 30 volt 12amp lambda power supply but I also hooked up 7 18650s to it and it worked fine but for how long I dont know I was just messing around to see if it would work and it did fine

your gonna love this laser we all been having a blast with ours

Hemlock_Mike · Dec 11, 2008

Turtle ---

Since those are lead/acid (gell) cells They might provide enough current but not through those tiny springs. How much current are you planning to run?

Mike

nightstick · Dec 11, 2008

what I would like to have,and dont know how to do, is a homade collmanating lens for this thing to be able to focus for further distance burns..l. I know everything would have to be znse lens but what type is confusing me :-?

turtlecannon · Dec 11, 2008

I was planning 10 amps as was suggested in the original GB thread.

Hemlock_Mike · Dec 11, 2008

After reading posts from others, you are aware that they can draw more than that aren't you?? You can get 10 amps using a PWM however.

Mike

turtlecannon · Dec 11, 2008

I am aware of that. Heruursciences has the PWMs does he not? Do you think the contacts on the batteries would be able to handle 10A?

Hemlock_Mike · Dec 11, 2008

I have no idea what those springs can handle. They may not burn up but I^2R losses may be high. Starting with 30 volts, a 2 volt loss may be acceptable. Did you order one yet ?? Have you ever built a laser??

Mike

turtlecannon · Dec 11, 2008

I haven't ordered one yet. I was planning on actually doing so tommorow. I have been into lasers for over 1.5 years, so yes I have built lasers, along with other electronic devices.

Hemlock_Mike · Dec 11, 2008

Get it !! you can always make direct connection to the cells. I'm going to try 8 - 18650 LiIon cells.

Mike

turtlecannon · Dec 11, 2008

You don't have to tell me twice

! I was considering using 18650s as well. How long do you think you could safely run it for with 8?

Hemlock_Mike · Dec 11, 2008

;D

I don't know...... I only want 15 Amps for a couple seconds at a time !! These will run at 5 amps for a while. Observe precautions related to heating of some parts at low duty cycle. I don't know how long an 18650 can provide power at various amps without overheating. These are the cells used in many highbred(sp) cars so I expect the best.
Asking for --- say -- 8 amps for ~ 30 seconds shouldn't be a big problem but watch heating of the driver.

Mike
Better order now !! I just ordered another ;D Power is fun.

Cyparagon · Dec 11, 2008

turtlecannon said:
That's what I was thinking. It wouldn't be super expensive either and you could probably fit 5 of those in a backpack.

Probably?... How big are the back packs where you come from? I could fit 20 or 30 in mine. :-?

RF excited CO2 lasers

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