Recent content by Dionysus2

Been using it all day and it's going great! Thanks again. Yeah CWatters I will check that, back to work on monday so it won't be for a bit. Spare time project and all.

Been using it all day and it's going great! Thanks again.

I had no idea there was precision and non-precision when it came to regulated, I thought it was either regulated or not... I went back to jaycar and bought what the non-precision one recommended for precision use (this one) and...it works! The data sheet says it won't drop below 11.4V at full...

At the power pack terminals, though everything is connected in parallel so it should be the same?

Honestly pretty minimal. My understanding is that the back EMF increases as the speed of the motor increases. Once the motor reaches a steady speed the back EMF should be constant. The back EMF acts like a voltage supply in opposition to the voltage supplying the motor. So my guess here is that...

When I just have a basic resistor only circuit, the voltage stays steady at 12V, regardless of resistance. I removed the peristaltic head off the motor. This made the voltage drop less, but it is still there, additional with each motor. I've measured the current by putting the multimeter into...

I found some old caps, a 4.7uF electrolytic, and a 223k poly cap, they made 0 change. I'll try to pick some bigger ones up after work on monday. Any thought on it just being motor back EMF? Considering each additional motor adds such a consistent drop... I've tried 2 different regulated power...

Hey Jim, I've tried a 5A regulated power supply, and there is a voltage drop with just 1, and again with 2. Interestingly the voltage drop seems to be linear with the increase in motors, roughly 0.2V. If each motor is generating 0.2V in back EMF, could this cause this drop?

Hey NascentOxygen, thanks for your reply :) I've also used a 5A power pack with this setup, somehow it seems to get more of a voltage drop than the 1.5A one. I've measured the AC voltage over the motors and it is only non-zero on start and stop (a process which takes <0.1 seconds) and then the...

Should still be an issue if I'm using a regulated power supply?

Hey PF, first time here, I have a problem I can't seem to solve! Any help is appreciated. I am using some DC motors with peristaltic pump heads to pump water (picture). I was having issues so I've broken my circuit down to the bare basics: 1) 12V regulated power supply 2) 12V motor 3)...