Simple to make Hilden-Brand style motor

[scianto]

does the latest model use solid steel instead of laminations? And did you had it laser cut or something?

All stators and rotors in these motors are made of laminations.

[i_ron]

North america seems to be a wasteland as far as chips are concerned. No stock anywhere on H bridge pre driver chips such as A4940 or MC33883....
Wait times of 23 weeks put it into the never never land. My good friend from Hungary suggested Westmark, the North American Distributor... but they have no stock... and a minimum "package" of 4 thousand pieces, LOL mind you, the price was right at only $1,61 each....

Anyway the only really important news is that I got my HIP4081 working!

Ron

[i_ron]

To make a long story short, my PP reciprocating was an interesting experiment but one that shows no promise. Only runs on 22 watts but the output is just not there.

Just for interests sake, here is a voltage current chart taken with a powered shunt and an isolated voltage monitor which is a divide by 10 amp.

Channel A is the current, channel B is voltage (negative, then positive)

edit: must check that I have my dead band right way around!


Ron

[i_ron]

yssuraxu and all

I will do this in two posts as I just lost my last post

Here is why the reciprocating PP will never work

first pic, blue trace is with the bar closed (static)

second pic is with the bar open, (static)

to be cont'

[i_ron]

yssuraxu and all

I will do this in two posts as I just lost my last post

Here is why the reciprocating PP will never work

first pic, blue trace is with the bar closed (static)

second pic is with the bar open, (static)

to be cont'

The reason for the asymmetry is the gauss probe is on the right end, not in the middle.

First pic (pp17) shows the gauss against the trigger pulse

Second pic (pp19) shows the gauss against the voltage plot taken over the coil.

A proper working model would show a square wave. This approximation of a saw tooth wave is indicative of a non working unit.  The peak flux is only present for m Seconds.

Back to the drawing board

Ron