I'm running two blade nano RC helicopter tail rotors on the fan circuit. This is what I found out in doing it. The fan circuit has an NPN (low side) darlington transistor BD679 as a pwm circuit. That transistor is rated for 4 Amps. However, I couldn't get even 1 Amp from it due to noise problems that I couldn't solve. I put a 1K resistor across the connection and then built my own power control circuit using just the signal. I used a MOSFET and took power from the Ultimaker to run it.
regards
Scott Vader
Recommended Posts
baasb 6
I wan't to know the same thing. I asked for this in another topic but with also no reply's (yet). Somebody from UM should know this right???
Link to post
Share on other sites