Australia
Asked — Edited
Resolved Resolved by Dave Schulpius!

Sabertooth Synchronous Regenerative Properties

I am planning to use a couple of Sabertooth / Kangaroo combos in my B9 project. The robot will be stationary and will be powered by a plugged in 12 volt power supply. I seem to remember something about the synchronous regenerative properties of the Sabertooth requiring a battery for somewhere to channel the feedback voltage to. My question is how is this connected? Do I connect the battery in parallel with the power supply or can I forget the battery and use diodes to stop the back flow. I have searched on line but cant seem to find what I'm looking for. Am I on the wrong track altogether?


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#25  

Steve, you overcame! Sweet! Aside from feeling frustrated and annoyed you couldn't get as much done as you wanted I bet on some level you feel good about yourself. You didn't let a weird and off the wall odd thing like that kick your butt. A lot of people would have walked away and given up or wouldn't have the understanding of what was happening. I admire your analogical mind and your fortitude (do you admire my use of these big words? lol).

Bottom line; Nicely done!

Have you thought any more about going to the Sabertooth 2x32 where the Power outputs can act as voltage clamps? If you recall this would eliminate the need of the extra switching circuit and dump battery.

Australia
#26  

Hi Dave,

It crossed my mind to change up to the 2x32s but I had already bought two 2x12s and figured it was a waste.... never say never though..... I've already blown so much money on doing things twice and three times till I'm happy with them. I still might get the 2x32s after all.

I'm just off to get a dictionary to look up some of those big words you used ;)

Steve

Australia
#27  

Hi Dave,

I think I found a small error on the Sabertooth switching circuit you gave me a while back. I think it shows the 2N3904 transistor (Q4) pin-out reversed.

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Here is a picture of one I Googled

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I'm not sure if I'm right, Its a bit hard to tell in the schematic which way around Q4 is facing, just thought you might like to know :D

Steve