Agentgates´s TPU setup with strange wavehill hump

[darkspeed]

@darkspeed,

Why the angry face?  Just Google 4017 data sheet and download pdf.

.

Ha ha not angry... "Undecided face"

Just curious if a shift register would be better than the decade counter for this..

[agentgates]

I did not know better at the point of coil making, so that is why the HUGE wires. LOL

Happens.

Do you need one current limiting resistor at each transistor or do you need just one resistor from the common plus point to the three coils?

Lets try it pls with 3 for now.

@All

You guys stay with the 4017 I move back to my pattern generator. That can give even overlapping outputs. I have forgotten the 4017 will make 1/3 output pulse. But don't worry about that I will adjust the final design.

[agentgates]

try high side switching!

Yes, thanks. Would be better.

[Groundloop]

Tony,

I have updated the drawing back on page 11 post 159.
One resistor for each coil. The current limit is set to 100mA
for each transistor.

Alex.

[agentgates]

Tony,

I have updated the drawing back on page 11 post 159.
One resistor for each coil. The current limit is set to 100mA
for each transistor.

Alex.

Thank you I am going to look into it.

Temporarily I moved back to my pattern generator and found some FET drivers in my drawer to fire the coils with them directly (no FETs). However they are inverting ones I will make another inversion on the pattern coming out the generator.