L297 Controller for Unipolar Drives

[pminmo]

Noise filter on the current sense lines.

[tyo]

thanks Mr. Phill that's important to reduce the noise.... hmm..hmm...
and.. my second question....
it's about oscillator...as your picture attach, you use RC network on 51K and 100pf... what the advantage between use 22K and 3,3nF..??
I've measured it using an oscilloscope, but the frequency is not stable ...( i use 22k and 3,3pF).
Where should I put the probe?? whether the pin 16 or pin number 1 ..???

my regard --ty0--

[pminmo]

Originally Posted by tyo thanks Mr. Phill that's important to reduce the noise.... hmm..hmm... and.. my second question.... it's about oscillator...as your picture attach, you use RC network on 51K and 100pf... what the advantage between use 22K and 3,3nF..?? I've measured it using an oscilloscope, but the frequency is not stable ...( i use 22k and 3,3pF). Where should I put the probe?? whether the pin 16 or pin number 1 ..??? my regard --ty0--

I just went with a different frequency.