Quote:
Originally Posted by Doolsduck
Hi bojan, great that's the one all right. Or maybe not so great. I don't know what a voltage regulator might look like but I'd say given it stopped working after the application of 12v, it doesn't have one.  I'm guessing the processor are those black rectangular items with lots of legs and they're not off-the-shelf?
cheers
Michael |
Yes, processor is the longer one, other one (74LS05) is hex inverter.
Voltage controller usually looks like
this but it could look like one of the transistors on board as well, it all depends on required power handling capacity.
Those processor could work at up to 6V, but not much more than that. And it seems there is none on your controller.
I have a similar
controller for my LXD75 mount, however it is dual axis and it runs on 12 V, so it
has voltage controller (under the main board, mounted on aluminium heatsink, mount screw is visible on image).
But the motor drivers are same, with H-bridge (designed with 8550 PNP and 8050 NPN transistors, just like yours.
There may be a way out, though - someone may have a spare controller box for your mount, or you can buy it on ebay, or you can build one yourself.