Electric Motor Secrets

[StevanC]

Oh, you mean those. I use them where I can, but this time I need something I can solder in a bread board. Just like those chip sockets. Also it is very hard to use those clamps if you have many transistors/MOSFETs close to each other, because you just can't reach the screws with the screwdriver.

"Use the 'force' and clever layout, young padawan."


I take care all my power elements are easy to reach/replace. And if I succeed, murphy's law protects me:

"A part that is easy to replace, newer fails: the part most hard to replace will fail instead."
COROLLARY:
"easy to replace designs are most rough"


so use low RDSon (5-7mOhm now(!)) and put them inline over a trivial heat conduct in a favorable step (pin wise) to just screw them on thew rail - from the other end of the rail make 'spaghetti' to the bread board?

But what do I know?

[Jetijs]

StevanC,
I took your advice and used those "clamps" along with terminal bloks, that you can solder in the circuit board. I found only one way how to arrange the MOSFET layout so that I can get to all of them with a screwdriver. Also my previous board had the MOSFETs too close together so that I could not attach heatsinks to them. Now the new board is ready and everything looks good:



Note that heatsinks are still not attached. Every MOSFET driver has its own socket so that I can easily change them if the need arises. Also each MOSFET can now be easilu changed. No wires are soldered on the board, everything will be attached via those blue terminal blocks. Now I need to test the circuit, put it in an acrylic box and attach all this to the motors. It's a shame that I have so little time to work on that
Thanks,
Jetijs

[Mark]

Well you better make the time! We can't sit around here all day waiting for you to get this motor finished, get to it! If you dont get that thing running in the next 2 days I'll have to come and confiscate it

OK so I'm a little anxious to see it finished, what can I say other than great work and I'm still jealous.

[StevanC]

prosperous

StevanC,
I took your advice and used those "clamps" along with terminal bloks, that you can solder in the circuit board. I found only one way how to arrange the MOSFET layout so that I can get to all of them with a screwdriver. Also my previous board had the MOSFETs too close together so that I could not attach heatsinks to them. Now the new board is ready and everything looks good:



Note that heatsinks are still not attached. Every MOSFET driver has its own socket so that I can easily change them if the need arises. Also each MOSFET can now be easilu changed. No wires are soldered on the board, everything will be attached via those blue terminal blocks. Now I need to test the circuit, put it in an acrylic box and attach all this to the motors. It's a shame that I have so little time to work on that
Thanks,
Jetijs

"You are on the narrow path of becoming a mighty jedi over time, young padawan"



That's the way I like it (the board) - may the mighty Murphy be with You ;-)


all You have left to do is to find time for time...

[Jetijs]

Thanks guys
Here's an update:





I put the circuit in an acrylic box and all the wires go to plugs on the aluminum plate, so that it will be like plug'n'play It looks messy with all the wires, but that's ok if everything works well. There are two plugs for each motor. One for timing and other for power. There are four switches so that I can switch each pair of coils on and off. This will allow me to adjust each phase of each motor separately to get the best timing and performance. There are also four red LEDs above the switches, each one indicates which pair of coils is currently running. Those red LEDs are great because with a 3k resistor at 12v they consume only 1mA each and still glow rather bright. The box has an acrylic cover with a hole cut in the middle right above the MOSFET's, this is intended for a cooling fan.
So with a bit of luck, tomorrow both motors will run
If everything goes well, then all I will have left to do is find a good coupler to connect both axis together.
Thanks,
Jetijs

[broli]

Wow. Please let me live in your workshop.

[Mark]

SWEET!!!! Can't wait to see some testing. Totally awesome!
Just a side note here, Jetijs have you seen and built the Bedini radiant energy pump using the same Mosfet you're using?

[StevanC]

Thanks guys
Here's an update:





I put the circuit in an acrylic box and all the wires go to plugs on the aluminum plate, so that it will be like plug'n'play It looks messy with all the wires, but that's ok if everything works well. There are two plugs for each motor. One for timing and other for power. There are four switches so that I can switch each pair of coils on and off. This will allow me to adjust each phase of each motor separately to get the best timing and performance. There are also four red LEDs above the switches, each one indicates which pair of coils is currently running. Those red LEDs are great because with a 3k resistor at 12v they consume only 1mA each and still glow rather bright. The box has an acrylic cover with a hole cut in the middle right above the MOSFET's, this is intended for a cooling fan.
So with a bit of luck, tomorrow both motors will run
If everything goes well, then all I will have left to do is find a good coupler to connect both axis together.
Thanks,
Jetijs

"The force is powerful within this one"


Did You consider a LED feedback for which pole/side is making and which not? You did, didn't You?
So You can (in that YT video we all expect...) show how it makes Q/!Q with the hand, and then let it spin up...
?

And clip the wires together, for crying out loud, with the spring-like plastic thingie or plastic tie-clips or whatever to make it look as pro as possible, once through with troubleshooting ...

Do capture the 1st trial run, just for case...

now, straight to work and make it done, i hate to eat my finger nails so short, yes?


bring it to life!

[Jetijs]

Yes, sir! Sorry, sir! Right away, sir!

[StevanC]

Yes, sir! Sorry, sir! Right away, sir!

i thought so



read ya soon? (job done...)

[Jetijs]

Just a side note here, Jetijs have you seen and built the Bedini radiant energy pump using the same Mosfet you're using?

What exactly do you mean with "Bedini radiant energy pump"?

[Mark]

Jetijs its a Bedini patent to run motors or even heater elements. Uses a timed pulsed circuit and capisitors. I cant seem to locate it on the net. I printed a copy a while back and have it at work. I'll try to dig it up and tell you where I found it so you can take a look at it. I've been wanting to build it for a while but have been too busy.

[Mark]

This isn't actually the page I have but it is the patent. The page I have has all the values and parts printed right on the schematic.
esp@cenet — Bibliographic data

Device and method for pulse charging a battery and for driving other devices with a pulse

[Grace]

Amazed!

Loving this thread!

[StevanC]

Yes, sir! Sorry, sir! Right away, sir!

Right

Right???

HOW long shall we wait still?

WHAT'S happening?

Don't You have the least compassion to our unbearable impatience regarding Your so far excellent project?

You could at least submit an empty post? just for chewing on?

::almost dead of waiting::



I hope You ok?