Understanding SM Driver Circuit, Building A Test Driver Voltage control Board

~Russ

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #25, on December 10th, 2016, 07:50 PM »
yeah i think something with the basics is best for now, simple,

all manual mode stuff, nothing fancy,

something for tuning...

~Russ
Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #26, on December 10th, 2016, 09:51 PM »
ok i set the driver circuit in a sim, the only way i can get any thing to work is replace the 470 ohm resistor with a 47k ohm.   This is on the Q7 base, going to 0V

when its 470 ohm, i cant get it to do nothing, i guess that's because there is not enough current flow. 

brad, try switching out that resistor.

also what value are you using for the N/A resistor on the TIP 120?

try a 47K as well. something like 470 is to low .

~Russ
Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #27, on December 10th, 2016, 09:55 PM »
oh and let us not forget that that tip 120 is a Darlington pair, it also has a diode in it!

http://www.mouser.com/ds/2/149/TIP120-890130.pdf

~Russ
Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #28, on December 10th, 2016, 10:01 PM »
oh and make sure you drive that with a 12V sig at G if you use 5V it wont turn off all the way. and for the sim at 5V it don't trigger right...

guess theirs more to tweak.

oh you know what the Vcc at 5V works fine with a 5V input!

10V on Vee

 ~Russ
Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #29, on December 10th, 2016, 10:13 PM »

https://www.youtube.com/watch?v=L_NAiyEKvL0

let it process, also its was all messed up scan through it about 1/2 way... some where in there you should see the sim and where i change the values and voltages, you can see it stop working,

and it seems that the tip 120 resister " N/A" did work at 470, but the other did not!

~Russ

gpssonar

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #30, on December 10th, 2016, 10:27 PM »Last edited on December 11th, 2016, 06:11 AM
This should be right compared to Don's sketches and what is actually on Stan's Board.

haxar

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #31, on December 11th, 2016, 12:41 AM »Last edited on December 11th, 2016, 12:49 AM
I only see one 47k (yellow,violet,orange) and three 470 (yellow,violet,brown) ohm.

The simulator doesn't seem to do what I'm expecting the circuit to do. Undefined results.

Matt Watts

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #32, on December 11th, 2016, 04:17 AM »
Quote from haxar on December 11th, 2016, 12:41 AM
I only see one 47k (yellow,violet,orange) and three 470 (yellow,violet,brown) ohm.
Go back and look at Dom's board, those resistors sure don't look like 47K to me.

gpssonar

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #33, on December 11th, 2016, 06:23 AM »
I corrected all my drawings that has been posted to reflect what is actually on Stan's Vic card and Don's Sketches from the Estate Files.

Gunther Rattay

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #34, on December 11th, 2016, 07:30 AM »
@Matt
maybe it makes more sense to make a separate board for the transistor stage - why?
if the transistor stage is able to deliver a bias for magnetic flux it can be driven by any pulse generator input / also pulse generators that are already in operation.

an alternative could be to make a pcb layout with separate transistorstage and pulse generator so that pcb can be cut to use transistor stage stand alone.

best way to me seems to be to make a 2 parts pcb connecting them with pcb connectors


https://youtu.be/QIwaSzlXgmc

Matt Watts

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #35, on December 11th, 2016, 09:56 AM »
Quote from Gunther Rattay on December 11th, 2016, 07:30 AM
maybe it makes more sense to make a separate board for the transistor stage - why?
Yes.  Russ and I pretty much agree on a very simple driver board.  My feeling is that it should have an optically coupled signal input and a battery connection.  The output would be the two leads to each side of the VIC primary.  All the transistors and regulators would be on the board.  Just a simple module that doesn't actually produce any pulses, just passes them through Stan's circuits as described.

With such a board, you can feed it any sort of signal you like and use this board to control the power/amplitude going to the VIC.

May take me a few days to get something sketched out and several more days to arrange a decent board layout.  If you all like what you see posted here, I'll send the files off to be manufactured.  You can PM me your drop address and I'll ship them to you when they're done.  And by heck somebody better make lots of Hydroxy gas using them, because I know when I croak, my wife will throw all the stuff I've made over the years into the dumpster.

gpssonar

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #36, on December 11th, 2016, 10:39 AM »
Hey Matt, how would you like to have something like this and you was proud of it like a new born child.
Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #37, on December 11th, 2016, 10:41 AM »Last edited on December 11th, 2016, 10:47 AM
And then next time you got to see it, It looked like this, Thanks to a wife that didn't even wait until I passed away to throw it out.

haxar

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #38, on December 11th, 2016, 10:54 AM »Last edited on December 11th, 2016, 11:01 AM
My estate should be exactly in the same state as I leave it a year later. Digitizing it would last a long time.

I guess she prematurely wanted you / it gone. You know how to use a screw driver? Hope you're able to recover some.

gpssonar

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #39, on December 11th, 2016, 11:02 AM »Last edited on December 11th, 2016, 11:06 AM
Got to look on the bright side of things. If she has to pay me for damages, what Quad City had to pay for Stan's I will be in good shape for the rest of my life.

Dom

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #40, on December 11th, 2016, 11:07 AM »
Quote from Matt Watts on December 11th, 2016, 04:17 AM
Go back and look at Dom's board, those resistors sure don't look like 47K to me.
I have to chop out the 470ohm resistors and replace them with 47k...
Quote from Matt Watts on December 11th, 2016, 04:17 AM

HMS-776

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #41, on December 11th, 2016, 11:46 AM »
Quote from gpssonar on December 11th, 2016, 10:39 AM
Hey Matt, how would you like to have something like this and you was proud of it like a new born child.
Ronnie.  Very sorry to see that. I hope it's not completely ruined.

How much did it cost to have all that made?

gpssonar

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #42, on December 11th, 2016, 11:54 AM »Last edited on December 11th, 2016, 11:56 AM
I really don't know the cost, Several Thousands of dollars for sure, not including 2 years of non stop hard work. I'll get it rebuilt soon and it will be good as new.

~Russ

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #43, on December 11th, 2016, 12:13 PM »
so you finely got some of your stuff back??? This would be helpfull!!!!! 

Hope your doing well Ronnie. Say hello to the grand kids for me!!!!

Also. I wanted to understand that driver circuit. because I clearly remember it not working when I first put it together. So I thought I'd run it through a simulator just to make sure I understand how and what is supposed to happen and so far the simulator agrees to my findings years ago it didn't work right. So I don't know how it's supposed to work right but I'll be changing a fuel resistor values so that it at least works right. At the current state it didn't even put any pulses. Not sure if you saw the same thing.. Brad?

~Russ


gpssonar

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #44, on December 11th, 2016, 01:22 PM »
I got that the last time I was there, only because I had it in the garage showing it to Rav's brother the week before all this took place.

HMS-776

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #45, on December 11th, 2016, 01:43 PM »
Quote from ~Russ on December 11th, 2016, 12:13 PM
so you finely got some of your stuff back??? This would be helpfull!!!!! 

Hope your doing well Ronnie. Say hello to the grand kids for me!!!!

Also. I wanted to understand that driver circuit. because I clearly remember it not working when I first put it together. So I thought I'd run it through a simulator just to make sure I understand how and what is supposed to happen and so far the simulator agrees to my findings years ago it didn't work right. So I don't know how it's supposed to work right but I'll be changing a fuel resistor values so that it at least works right. At the current state it didn't even put any pulses. Not sure if you saw the same thing.. Brad?

~Russ
I had the same problem....tried again to stimulate it the other day at still can't get a pulse through it.

Ronnie is there any chance you can show us what the waveform across your primary coil looks like?

~Russ

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #46, on December 11th, 2016, 02:21 PM »
Quote from HMS-776 on December 11th, 2016, 01:43 PM
I had the same problem....tried again to stimulate it the other day at still can't get a pulse through it.

Ronnie is there any chance you can show us what the waveform across your primary coil looks like?
Ok did you change those resistors and test again?

~Russ

HMS-776

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #47, on December 11th, 2016, 02:30 PM »Last edited on December 11th, 2016, 02:49 PM
Quote from ~Russ on December 11th, 2016, 02:21 PM
Ok did you change those resistors and test again?

~Russ
I always had them at 470 ohms. At 47k the base current is too low.

Can't get it to work either way

Matt Watts

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #48, on December 11th, 2016, 02:32 PM »Last edited on December 11th, 2016, 02:34 PM
Quote from gpssonar on December 11th, 2016, 10:39 AM
Hey Matt, how would you like to have something like this and you was proud of it like a new born child.

And then next time you got to see it, It looked like this, Thanks to a wife that didn't even wait until I passed away to throw it out.
Probably a good thing it's you and not me.  If it were me, one of us, either her or I would not be walking this planet anymore.  Or as my ol' man would have said, "Bring a gun, because I'm going to."


The good news is, we're all going to have something like that we're proud of, "all we need is a little more time..."



~Russ

Re: Understanding SM Driver Circuit, Building A Test Driver Voltage control Board
« Reply #49, on December 11th, 2016, 03:40 PM »
Quote from HMS-776 on December 11th, 2016, 02:30 PM
I always had them at 470 ohms. At 47k the base current is too low.

Can't get it to work either way
Ok. I rember I had the same problem. I'll get mine connected and see what it brings.

~Russ