Reply to "Lionel FT sound performance?"

Yeah, it’s definitely not PWM, I agree 100%.

It appears that the controller isn’t changing the voltage, but it’s shortening the duration of the wave, which is what made me think of PWM. Sort of similar, but definitely not the same thing...

My theory is that even though the diodes drop the voltage the motors are still getting a peak voltage of around 12-14v (I’m assuming there is some voltage drop through the reverse board also) which is enough to make the engine move right away...

9/6/201:35 PM

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