Jump to content

sorenb

Returning Member
  • Posts

    760
  • Joined

  • Last visited

Everything posted by sorenb

  1. I use Fusion360. and PhotoShop CS5. In my experience Fusion is capable of much more than needed to plan/design a chassie. Turned out that the dxf-file export from Fusion doesn't work for ModuShop. Now I provide FPE files for ModuShop which seems to work fine. If you do you own machining, be aware that the aluminium provided by ModuShop is very soft. Even with sharp tools it can be a bit of a challenge. Also, if you'll have ModuShop do the customization (or some of it) they charge a premium to do customizations from both sides.
  2. Used wrong word here ... the switch is in fact a toggle switch, though it needs to be pushed rather deep to act as a toggle ...if only push'ed lightly it acts as a momentary ... so rather similar to the AMB setup
  3. I used this one ....it has a red ring lighting up when power is on. I used something like 3-3.5V for the light ...it gets way too bright to my taste at 12V. Small boards close to the inlet is voltage selector 120/240VAC with main relay, and another 12VPSU + latching circuit. When main switch on the back is turned on only the latching circuit is on until the power switch at the front is pushed momentary. The power switch at the front only carries <12V voltages.
  4. how's that even possible? (I assume you used the same pattern for both boards?)
  5. oh boy, a crazy second pilot and Pripps and Sürstrømning aficionado .... don't say you like Abba and Carola as well :-S
  6. by suggesting removing the 120ohm? ....and yes. leg3 is supposed to be grounded, thus why 0v at leg2 should give 0v at leg6
  7. how is 0V at leg2 to resonable when the output is -1.5V? How is -1V at leg6 resonable when leg 2 and leg3 is 0?
  8. and you didn't by any chance enable servo1 as well? what do you have at leg4, leg7 and leg3 of the OP27?
  9. hmmm .... have you checked whether some of the legs of the Op27 has been bended?
  10. you say you have around -1.5V on the output? and have 0V at leg2 (like in 0.000V?), and -1V at leg6 ?
  11. measure leg2 and leg6 of the OP27 against ground, might give you a clue to what is going on ...
  12. so that is where the need for a shrink originates from
  13. did you empty the bottle in the meantime? that might create a bit of an offset ;o)
  14. Yes, meaning you have adjusted the output stage for 22.6mA Not sure what you are trying to express?
  15. de-attach the high voltage from the board. put the LV+ to the HV+ ...put the LV- to a DMM common, and put the probe from the DMM at the tail ...if you get steady current it probably works
  16. Well, Sherlock, is it working? if not, you did some thingS wrong
  17. Not what I am asking. If you use the SPLIT PSU boards, and have two identical HV boards ....and wire GND to Ground, you'll have +457 on both PSU's ... Same goes for the GRLV split boards So, try to be more specific and give more information if you want help ... there are lots of skilled people here that might give you help or a hint to what is wrong, but they need a bit more than: "it not work, what is wrong?"
  18. ... in context of your questions/information so far, I dare to ask, do you by any chance wired the Split PSU so you really have 457 and 14.96 on both positive and the terminal supposed to be negative?
  19. Check that you have - used the right transistors/ resistor values - have the right voltages from the PSU at the PSU connector - wired everything correctly. and check the voltages at the amp board as well - no shorts and/or blobs...if you have used too much solder it might hide a bad joint ...clean up with some wick and re-do with extra flux If the above doesn't make things work, post a close up picture of your board top and bottom.
  20. Finally received Front/Back plate for the 5U Dissipante - almost took forever. Decided to have a groove dividing the front plate into an upper 2U and a lower 3U, to have it look less bulky; it's still one 5U piece. The "pi" sort of symbols the topology To be continued ...
  21. ....if one doesn't want the buffer/servo you just jumper it ...
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.