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  1. C

    AMM-P4 High-Performance Transistor-Controller

    The two IGBTs are in parrallel connection. It is overkill for the Quantya bike, however I wanted to test if the gate drive is good for 2 of those monsters. I think it will also be good for 3 :) There is no regen on the AMM-P4, it would require a half bridge (I initially wanted to incorporate...
  2. C

    Interest in a "Power Board" devkit for homebuilt controller?

    Yes, that PCB was expensive, however it worked very well for up to 200A continuous. I smoked a couple of those, one through excessive dV/dt and another one by too high impulse currents. The problem is, it is quite difficult to desolder the broken Mosfets from the board as the 3mm copper plane...
  3. C

    AMM-P4 High-Performance Transistor-Controller

    Correct, my test bike is a Quantya. The module shown can power much much bigger things. The idea of the P4 is to separate control logic from power, while maintaining safety and featuring a much better drive mode (Altmann Tru-Torque) than what is currently available. The power of a P4 system...
  4. C

    AMM-P4 High-Performance Transistor-Controller

    Hi there, the first version of my P4 controller was rated to withstand 100V. But what happens if you have more than 100 V ? You make a 200V version, but then that will not work with 48V. So I designed the new P4 to be powered by a 12V source. The main battery can have much higher voltages...
  5. C

    ... still riding on electrons ...

    Hi there, I am just reposting this, since the original post somehow disappeared ... This is about my tru-torque contoller project: http://www.altmann.haan.de/riding_on_electrons/default.htm Chucky :)
  6. C

    I confirm... IRFB4110 Mosfet CAN BLOW !!!

    Hi there, by looking at the pics, I think the heat transfer from the IRF to the aluminium strips may not be adequate. From reading the IRFB4110 data sheets, 75A should be a negligible current if distributed over 2 devices. This should give about 20 Watts of heating power only. However if heat...
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