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Hey all--
Picked up a pair of CT6810P galvos today on ebay. I searched here and found at least a couple of people use them.
Couple of questions (which i should have asked before getting them):
What kind of performance will they give?
And will this work for the amps?
Thanks for any insight.
Doug
They are horible, suck ass, you should trade them to me for a 5mW green pointer.... lol
They actually are kick ass and work great for big beams at 12k.... Wide scan angle and VERY RELIABLE!!! It is what I use in my 5Watt RGB because of my fatty 635nm 1.5Watt...
Sweet.
I didn't figure at 35 bucks/ea it would be a bad deal.
Now just need drivers......
Quote:
Originally Posted by mophead
That driver in the schematic is for 6800s, so it should not be hard to adapt to 6810s. In fact it should work as it. I'm the one who scanned it in.
If I lay out a PCB for that,using a different output stage, you want in? I just picked up a pair of 6210s and need drivers.
I was about to PM Mr Benner and ask him which chinese amp that we should buy for this....
The only part that will be a problem with the schematic is the chip that does the energy limiting is no longer made and nearly impossible to get, so we will either have no energy limiter or need to make a new one.
Steve
Quote:
Originally Posted by mixedgas
Absolutely. I'd love to get in on it.
I'd like to build the amp just because I like to tinker and build, but if it comes down to buying some Chineese amps---that's fine too.
I have a tube of 50 new Raytheon RC4200N multiplier chips in the stash here.
Quote:
Originally Posted by mixedgas
Quote:
Originally Posted by Junktronix
Funny, I have three here but they are spoken for... :D
I have a bunch of the cambridge amps for these, some working, some not... Want to buy a couple for cheap and see if you can get them to work? How about 4 non-working amps for $50+shipping?
SOLD! SOLD! SOLD! (15 characters)
Steve
I tried the sonima amps for the 6200 scanners, the sonimas have the raytheon chip on them. But that didn't keep them from destroying my scanners :(Quote:
Originally Posted by mixedgas
Sorry to hear that,,,,Quote:
Originally Posted by FourDee
Any idea what went wrong?
Steve
No idea,
I successfully managed to tune the feedback, then I connected the motors (whilst first turning everything off of course)
I even tuned them to the ILDA test pattern. But I noticed one of the scanners getting hot sometimes.
Then some kind of high frequency oscillation started and before I knew it, the cores were delaminated and the rotor was demagnitised.
The worst part is that I built my entire projector around them and Junktronix has sold all of his bargain ones, so I'm looking at a lot of money to get my projector up and running again (with the MicroAmps I already bought)
Mine are the junktronix ones. can you make me a offer I'll never regret?Quote:
Originally Posted by FourDee
Steve
Sorry to dig up this ancient thread, but I recently found a set of 6810p's at $40.
Are there any of the old drivers still floating around?
I have a set I can sell you. Untested, but easy to repair.Quote:
Originally Posted by krazer
PM me.
Steve
Anyone got any pics of these working? *vigil
It looks like I am getting amps from mixedgas, so hopefully I will be able to post something soon :)
The end goal is to send them into my laser cutter, but I will make sure to mate them with my whitelight just for kicks *retardo
just wanted to dig this up again.... has ANYONE got a working solution? i have a 650 rev e2 board with mine but never hooked em up... would really like to get these goin
found this one ..is this a correct set?
http://www.ebay.com/itm/Cambridge-Te...cAAOSwT~9WiEzG
Quote:
Originally Posted by b52productions
That amp is slew rate limited. It has a circuit in the front end that limits the rate of change for a scan signal. Unless you remove/bypass/re-adjust the limiter, you'll have a hard time doing bright single beams with it, as a beam calls for an "instantaneous" jump and with the limiter circuit it will take a long time to settle. Flat scans and graphics will almost work with the limiter there. The limiter is on there to insure smooth scans when projecting on recording film. The limiter is on the input circuit, not in the feedback loop, so you probably can remove it, I have never tried to do so on my board. Then you will have to retune the amp for ILDA compatibility. The amp in question is usually set up for precision scanning, not speed.
~
Your really looking for 6850s, unless you want to and have the skills to modify the 650X series amp.
~
Steve
Attachment 52366
i guess this is the correct model galvo.. and then i would still need new amps ? any suggestions..
I might have a pair of amps I could be talked out of. Mixedgas repaired them and I haven't touched them since. What are they worth to you?
Edit--- I have a pair of galvos too (never plugged them up. Bought them as functional, but never tried them).