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  1. calinb

    Version 2 Crystalyte Controller information

    Okay--assuming the Ver 2 output stage is the same as the analog controller, then N2 is the low side, 2N5551. Both N2 and T3 are blown on my Ver. 2 board. I haven't powered it up since I replace the six FETs with 4110s. Good thing I double checked the transistors! Don't know how I missed...
  2. calinb

    Version 2 Crystalyte Controller information

    Okay--assuming the Ver 2 output stage is the same as the analog controller, then N2 is the low side, 2N5551. Both N2 and T3 are blown on my Ver. 2 board. I haven't powered it up since I replace the six FETs with 4110s. Good thing I double checked the transistors! Don't know how I missed...
  3. calinb

    Version 2 Crystalyte Controller information

    Thanks, fechter! I placed an order with Allied Electronics for six 4110s. They have them for $5.13 but they didn't have stock for the PNP transistors. I think mine are okay so, hopefully, I won't need them. I decided to upgrade to 4110s. Hopefully, they'll hold up better than the 4130s for...
  4. calinb

    Version 2 Crystalyte Controller information

    Thanks, fechter! I placed an order with Allied Electronics for six 4110s. They have them for $5.13 but they didn't have stock for the PNP transistors. I think mine are okay so, hopefully, I won't need them. I decided to upgrade to 4110s. Hopefully, they'll hold up better than the 4130s for...
  5. calinb

    Version 2 Crystalyte Controller information

    It probably identifies the manufacturer. BJT stands for "bipolar junction transistor," which covers a lot of ground, as you saw. I don't think BJT is the marking on the package. It's probably Bjo, as you thought. I'm just not familiar enough with discrete components to identify it.
  6. calinb

    Version 2 Crystalyte Controller information

    It probably identifies the manufacturer. BJT stands for "bipolar junction transistor," which covers a lot of ground, as you saw. I don't think BJT is the marking on the package. It's probably Bjo, as you thought. I'm just not familiar enough with discrete components to identify it.
  7. calinb

    Version 2 Crystalyte Controller information

    Maybe someone has a recommendation but I was contemplating finding a transistor curve tracer to borrow and then matching to a good fit from a datasheet, but I think my transistors survived.
  8. calinb

    Version 2 Crystalyte Controller information

    Maybe someone has a recommendation but I was contemplating finding a transistor curve tracer to borrow and then matching to a good fit from a datasheet, but I think my transistors survived.
  9. calinb

    Version 2 Crystalyte Controller information

    Oh! Maybe it was The7 who posted the pic orininally: http://endless-sphere.com/forums/download/file.php?id=10358 Interesting that C14 is missing. I'll compare your board to my board this evening. Was your board a 12-FET board originally? My board shipped with only six 4310s. Do you think...
  10. calinb

    Version 2 Crystalyte Controller information

    Oh! Maybe it was The7 who posted the pic orininally: http://endless-sphere.com/forums/download/file.php?id=10358 Interesting that C14 is missing. I'll compare your board to my board this evening. Was your board a 12-FET board originally? My board shipped with only six 4310s. Do you think...
  11. calinb

    Version 2 Crystalyte Controller information

    Common gate resistors seems to be the case. How bad is this? Dave, with ElectricRider.com, says only the 72 V controllers have all 12 FETs installed. I'm trying to decide whether to refit my board with 6 FETs or 12 FETs with 4130s or 4110s. six? twelve? 4130s? 4110s? @monster, I noticed...
  12. calinb

    Version 2 Crystalyte Controller information

    Common gate resistors seems to be the case. How bad is this? Dave, with ElectricRider.com, says only the 72 V controllers have all 12 FETs installed. I'm trying to decide whether to refit my board with 6 FETs or 12 FETs with 4130s or 4110s. six? twelve? 4130s? 4110s? @monster, I noticed...
  13. calinb

    Version 2 Crystalyte Controller information

    So far, I have two blown FETs (V3 and V5 both have all 3 leads shorted together), F1 blown, E2 blown, and the power vias between V4 and D1 are blown open. They carry the current from that small power plane to the solder blob "bus" on the other side of the board. My T's and N's seem okay. Be...
  14. calinb

    Version 2 Crystalyte Controller information

    So far, I have two blown FETs (V3 and V5 both have all 3 leads shorted together), F1 blown, E2 blown, and the power vias between V4 and D1 are blown open. They carry the current from that small power plane to the solder blob "bus" on the other side of the board. My T's and N's seem okay. Be...
  15. calinb

    e-Power Challenge 2008 update

    Interesting, Bill! My mountain bike sucks the power (aerodynamic drag). My battery puts me in eCat 2 - Div 3 but, just for kicks, I calculated that, with the same energy, I could've completed 15 laps in only 3214 seconds or 214.3 seconds per lap. My "seconds per lap" would be even better at...
  16. calinb

    Version 2 Crystalyte Controller information

    Two of my six 4310s are blown (V3 and V5). I de-soldered them and the leads are all one big short. I replaced the blown 1.5k F1. Guess I'll probe around and try to find the gate transistors and resistors too.
  17. calinb

    Version 2 Crystalyte Controller information

    Two of my six 4310s are blown (V3 and V5). I de-soldered them and the leads are all one big short. I replaced the blown 1.5k F1. Guess I'll probe around and try to find the gate transistors and resistors too.
  18. calinb

    Version 2 Crystalyte Controller information

    Thanks, The7. I found that the source and drain of one of my six 4130s are a dead short. I may try replacing just that one FET. If it works, I'm interested in placing all twelve of 'em--perhaps with 4110s. Does anything else need to be done to add the additional six FETs that, apparently...
  19. calinb

    Version 2 Crystalyte Controller information

    Thanks, The7. I found that the source and drain of one of my six 4130s are a dead short. I may try replacing just that one FET. If it works, I'm interested in placing all twelve of 'em--perhaps with 4110s. Does anything else need to be done to add the additional six FETs that, apparently...
  20. calinb

    Version 2 Crystalyte Controller information

    F1 is a 1.5k. I found the circuit and layout doubled elsewhere on the board and I could read the value. I guess there's no harm in just filling the vias back up with solder and replacing the resistor, at this point. If the wheel powers up, I'll look into populating the other 6 FETs too...
  21. calinb

    Version 2 Crystalyte Controller information

    F1 is a 1.5k. I found the circuit and layout doubled elsewhere on the board and I could read the value. I guess there's no harm in just filling the vias back up with solder and replacing the resistor, at this point. If the wheel powers up, I'll look into populating the other 6 FETs too...
  22. calinb

    Version 2 Crystalyte Controller information

    My three "singed" vias are also probably placed to carry high current from one side of the board to the other too. They got hot and the solder started to melt out of them with my F1 frying. The7, would you mind reporting the numbers on the top of your F1. I'd like to try replacing it, if I...
  23. calinb

    Version 2 Crystalyte Controller information

    My three "singed" vias are also probably placed to carry high current from one side of the board to the other too. They got hot and the solder started to melt out of them with my F1 frying. The7, would you mind reporting the numbers on the top of your F1. I'd like to try replacing it, if I...
  24. calinb

    Version 2 Crystalyte Controller information

    It is F1 that's blown. If it's a fuse resistor, does anyone know what it protects or the value of the resistor? Notice the trace was very hot under the three through holes above D1.
  25. calinb

    Version 2 Crystalyte Controller information

    It is F1 that's blown. If it's a fuse resistor, does anyone know what it protects or the value of the resistor? Notice the trace was very hot under the three through holes above D1.
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