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Tech Head - The Technology Section
The Work Bench and Soldering Station
V-Box blew up :(
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<blockquote data-quote="Vipersan" data-source="post: 913662" data-attributes="member: 325666"><p>Sounds like a plan Alex ..</p><p>Look forward to seeing what you end up with ..</p><p>Like you I prefer the former..</p><p></p><p>Now ..</p><p>My build has undergone a few changes ...</p><p>I've added extra fuses ..</p><p>..an 8amp fuse in the mains line ..</p><p>But this will have to be upped to 10 amp in light of what I intend to do next..</p><p>Space may be an issue..</p><p>I also have 4 amp fuses in each 24volt power line to the relays on each Gbox pcb ...</p><p>Just in case of motor failure or indeed excess loading in the event I accidentally drive to the actuators limits.</p><p></p><p>So far the dual positioner is working ok after a fashion..</p><p>The 24v psu now uses a later version of the one I originally used but is physically bigger..</p><p>Again ..cut to fit in the space (same ratings 8.3Amp)</p><p>BUT ...noise IS an issue ...</p><p>When I say noise I mean electrical noise..</p><p>Spikes etc as the relays switch ..</p><p>and this has caused me a few days of head scratching ..and no I didn't find an easy solution.</p><p>As you know I simply drive the 24v line to a 5v regultor on each Gbox pcb ..and mostly this works ...but occasionally during a switch of direction ...or start up/shut down of motor movement ...the Gbox electronics goes dark ...</p><p>Sometimes simply to standby..</p><p>Sometimes requiring full power down then up again..</p><p>Sometimes erasing ALL sat position data..</p><p>I suspect this is why there is a seperate winding on the transformer and a thus a seperate 12v ...stepped down and regulated to 5v for the electronics..</p><p>So ..I hope to emulate this by seperating completely the electronics from the motor drive ..</p><p>to this end I've ordered a small 5v regulated load protected switch mode power supply from Hong Kong..for £4 ..</p><p>Small footprint and small in price ..</p><p>I just hope it works ok ..</p><p>It will mean there will be no common ground ....no shared supplies ...and hopefully NO spikes and intermittent shut downs ...and the electronics will then be assured of a constant uniterrupted 5v .</p><p>rgds</p><p>VS</p><p>This is very much ..still a work in progress..</p></blockquote><p></p>
[QUOTE="Vipersan, post: 913662, member: 325666"] Sounds like a plan Alex .. Look forward to seeing what you end up with .. Like you I prefer the former.. Now .. My build has undergone a few changes ... I've added extra fuses .. ..an 8amp fuse in the mains line .. But this will have to be upped to 10 amp in light of what I intend to do next.. Space may be an issue.. I also have 4 amp fuses in each 24volt power line to the relays on each Gbox pcb ... Just in case of motor failure or indeed excess loading in the event I accidentally drive to the actuators limits. So far the dual positioner is working ok after a fashion.. The 24v psu now uses a later version of the one I originally used but is physically bigger.. Again ..cut to fit in the space (same ratings 8.3Amp) BUT ...noise IS an issue ... When I say noise I mean electrical noise.. Spikes etc as the relays switch .. and this has caused me a few days of head scratching ..and no I didn't find an easy solution. As you know I simply drive the 24v line to a 5v regultor on each Gbox pcb ..and mostly this works ...but occasionally during a switch of direction ...or start up/shut down of motor movement ...the Gbox electronics goes dark ... Sometimes simply to standby.. Sometimes requiring full power down then up again.. Sometimes erasing ALL sat position data.. I suspect this is why there is a seperate winding on the transformer and a thus a seperate 12v ...stepped down and regulated to 5v for the electronics.. So ..I hope to emulate this by seperating completely the electronics from the motor drive .. to this end I've ordered a small 5v regulated load protected switch mode power supply from Hong Kong..for £4 .. Small footprint and small in price .. I just hope it works ok .. It will mean there will be no common ground ....no shared supplies ...and hopefully NO spikes and intermittent shut downs ...and the electronics will then be assured of a constant uniterrupted 5v . rgds VS This is very much ..still a work in progress.. [/QUOTE]
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Tech Head - The Technology Section
The Work Bench and Soldering Station
V-Box blew up :(
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