Full auto w/ laptop and cambridge galvos

**dream beamz** · 06-08-2007, 19:56

Cambridge 6800 galvos w/ mirrors with amps and powersupply
$1000

Full auto regular with ISA card, cables and laptop with dock
$1000

paypal accepted

**allthatwhichis** · 06-08-2007, 21:35

Damn... if I only had a spare grand... I'd love those scanners. You need any computer parts?

I seem to have several extras of several items.

**cruch** · 06-09-2007, 02:26

yeah! me too..I got only 500usd in my paypal account...hehe

**dream beamz** · 06-09-2007, 07:35

sorry all that, my house is a computer surplus store practically. Adam will agree. Heck, while I am selling stuff, got an Lenovo Thinkpad Z61t Core 2 Duo laptop with dvdrw 80gig hd and 3gig ram with built in wifi I will sell for $500

Closing on my house next friday, must sell these or borrow money from a friend

**Dr Laser** · 06-09-2007, 15:09

are those ones with -+10v differential?

**allthatwhichis** · 06-15-2007, 00:47

flowerchild???

**dave** · 06-15-2007, 01:34

Originally Posted by Dr Laser

are those ones with -+10v differential?

You will find most scanners will run off either 5 or 10v differential. Its just a matter of setting input scale correctly.

**Dr Laser** · 06-15-2007, 06:12

My controllers are +-10v. I can scale the image to 50% but what if I accidentally put full scale. Whats gonna happened to the galvo driver. Or there is a way to adjust drivers themselves to accept -+10V.

Sorry question mark button is gone on my keyboard.

**buffo** · 06-15-2007, 08:33

I'm pretty sure the DT-40 galvo's come with a dual-potentiometer (ganged on a single shaft) that is used to adjust the gain of the input signal. Why not use the same principle here? Put a 20K pot (OK, two of them - one for x and one for y) in line with the input to your scan amps and you should be able to knock the voltage down to the appropriate range.

Also, I thought only the really old galvo amps could accept the +/- 10 volt differential inputs (like the old open loop / accelerator 124 amps and stuff).?.

Adam

**dave** · 06-15-2007, 16:58

Originally Posted by Dr Laser

My controllers are +-10v. I can scale the image to 50% but what if I accidentally put full scale. Whats gonna happened to the galvo driver. Or there is a way to adjust drivers themselves to accept -+10V.

Sorry question mark button is gone on my keyboard.

Sorry, i was meaning - adjust the input scale on the scan amps for 10v. Most scan amps will be fine with this.

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