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Differential Encoder Interface

I threw together this board for decoding the differential encoder signals coming from the servos. I don't like etching two-sided PCBs, but I'm not sure I like this many zero-ohm jumpers either... It's basically four DS3486 ICs with input filters + a lot of connectors.

The circuit is borrowed from an IRF application note, second to last page of this document: http://www.irf.com/technical-info/refdesigns/dg-irmck201.pdf

Not very compact or cute, but hopefully functional...

Source: PADS PowerLogic schematic and PADS PowerPCB PCB-layout.

This was written by admin. Posted on Tuesday, April 10, 2007, at 04:13. Filed under CNC. Bookmark the permalink. Follow comments here with the RSS feed. Comments are closed, but you can leave a trackback.

2 Comments

  1. Eric U. wrote:

    Anders, I was looking for the dc_servo_schematic that I downloaded from your site and can't find it again. Is that a work in progress?

    Tuesday, April 10, 2007 at 18:28 | Permalink
  2. Anders wrote:

    There's a preliminary drawing at
    http://www.anderswallin.net/sandbox/servo.pdf
    which I also mentioned in a post to the EMC mailing list.

    I'll post something better and more complete when the mill is actually running with the servos.

    AW

    Wednesday, April 11, 2007 at 01:44 | Permalink