I'm getting close to wiring everything up on the RGB projector, and plan on trying to stick with Bill Benner's "...Making the Right Connections for Perfect Laser Images" article as much as possible.
(By the way - if you're building / overhauling / troubleshooting a projector's electrical system, I HIGHLY recommend this article! Here's a link to the latest published version: http://www.laserist.org/laserist2008...onnections.htm)
Here's my question:
Bill recommends the use of difference amplifier circuit for the scanner amps AND the laser modulation input, using a TL084 or similar op-amp. I have two CNI LP-series lasers (532nm @ 400mw, and 473nm @ 100mw), and a pair of Maxyz 660nm combined through a PBS cube.
Has anyone here utilized a difference amplifier for the modulation of any of these particular lasers, and if so, any pros /cons / recommendations you would be willing to share?
Thanks in advance!
Randy