AnsweredAssumed Answered

Reduce Amplitude obviously

Question asked by li.linda.001 on Jul 27, 2014
Latest reply on Jul 28, 2014 by Clive One
When I using my desktop computer to power the STM32F429i Disco, the PWM out put amplitude is aobut 3v, but when I use a IC LM7805 (change DC form 9V to 5V) to power it, PWM reduce amplitude obviously, even just have 1%.
Please help.