Scolioza
Member level 1

Hello all.
I built a psu with LM317 and 3 BD902 bypass transistors. As you can see in the circuit diagram. I tested with a jigsaw from proxxon which normaly runs at 12V max 2amps. The problem is that when i start the tool the output voltage drops from 12v to 10v and from 15V to 11V.
Can you tell me please what is happening?
Thanks in advance!
I built a psu with LM317 and 3 BD902 bypass transistors. As you can see in the circuit diagram. I tested with a jigsaw from proxxon which normaly runs at 12V max 2amps. The problem is that when i start the tool the output voltage drops from 12v to 10v and from 15V to 11V.
Can you tell me please what is happening?
Thanks in advance!