2nd  Diagram is for your comment

Positive Side
Starting with Q4E it goes back to VIC Pin 6 then VARIABLE VOLTAGE Switch at top of VIC board
 When switch is closed it connect signal to F+ on Test output pad at top center it goes left side of Diode 1N4005 and to PRI-F VIC pin 9

 and then to PR1- F pad in daughter board area and on to Primary Coil.   (That gives us both output to Coil and Test Pad at top.)

This is the PRI S- routing and traces on board look correct.  Like the new layout!

I was thing about doing this.

This the flow for PRI F+.  The traces look correct

I double checked these do go to test BNC Pad through the Anal Freq Switch.   When I looked at this there are actually 3 signals going through that switch ON - OFF- ON but there is a signal on the OFF position as well from TS-2.

The 1N4405 Diode below the 1N5408 is also in the flow to block the reverse signals (One across Primary Coil).

hi earl lots of changes i will issue a Gerber soon just  trying to read all than we have to keep checking as lot to get right
coming soon
Dan

Dan these very early in the morning and later realize while path is correct directions on arrows on F is wrong.  As signal goes out S and comes back on F.  But as we are dealing with an analog signal not sure arrows matter.

It is amazing how 4 lines can get so complicated.  Much cleaner on the schematic when you have diodes next to Primary coil.  see picture.  Should have posted this earlier I think it you have helped.  (By the Q9 in schematic is Q3 on board).

yes working hard to check gerber here
once i think got changes checked again i will send it again most likely in morning tomorrow,
after i think we should than add blocking diodes and space for optional  resister before screw terminals
 so people have less to do when connecting coil pack and it  preserves things we know

the more we get it hard wired the better for
focus on testing and repetition on other new things like power board card or gas fb card etc
less explaining to do in future and or deep reading

I like the diagram above it helps thanks
Dan

I did not do the diagram it's just a piece of the big diagram that has all the schematics with connections.  It has been one of the most useful tools.  I go back to it all the time.  It's in one of your other threads.  I am bad with names so I do not remember who did it.

As today was quite I worked on the the front panel for the VIC. Drilled holes and mounted switches, etc and labeled everything before I wire it so I know what things are.  Still waiting for a few parts for the VIC board to come but I do have all the modifications done.  They were not to hard.

Also went back to my test system again to figure out why the digital signal is only at 1-volt.  I know TIP120 failed and I replaced but still not working. I put it aside while working on traces, which was a good break for me.  Signal is getting generated ok just not amplified correctly.  Like to get working again so I can compare the outputs new VIC board.

previous i did note tips models matter
Russ mentioned that  posting gerber soon
Dan

My testing showed that it needs to 1K or input will be to low to trigger Q6.   Fix should be easy as traces are correct we just need to change silk screen for resistor to 1K.

I also have a circuit schematic for K4 section, I not sure by who but Revision history give Initial release date 2011-11-16 and revision of 2016-12-15 that show part being changed to 1K.    (Looks like it was part of a larger schematic for VIC ?)

Note:  It also says 1N4005 should be 1N4003.

Which 22 k Resistor please mark so we change to 1 k

Dan

That's the correct one.

I also did some initial testing of the Patch that was in the middle of the board on my tests system.  It puts the digital signal on the analog side of the primary.  The digital signal rides on top of the analog signal.  Still need to do some more testing as I did not have the capacitor in test setup that ties signal to ground so result was near 12V.  Signal is in sync with the digital pulses, this I expected as it generated from same source.  So it not in Gate off area.  Only thing there is the analog signal.

I will post pictures with and without  patch later so people can see what it does.  Easy for me to do on my test system as I can make change with patch cords.

Nice Work Earl

I am working through changes here

Dan

Dan, I have installed patch on test system and took 8 screen shots showing effect of patch should I post those here or would VIC or my test thread be better?  I did take scope shots both across primary input and across cell interface.

Hi Earl
post here and there  as both relevant to the changes or notes
but different version

Dan

While helping Dan document the VIC board, I learned more about one of the Patches on Stan’s VIC board.  I do not have that patch in my test systems as I build all my boards from schematics, so they are not an exact duplicated of Stan’s VIC. 

I could see where the patch was connected but I wanted to see what it does to the signals.  It turns it is pretty easy to install patch on by test setup as I used screw connectors and have easy access to multiple points on the board including the ones used in the patch.

The patch hooks up to the 4x switch position “1X” (which comes from pin 4 of the 4046 chip).  This signal is the high frequency digital signal and contains the gate.

 Patch runs from 1x to a 22K resistor connected to ground through 0.22uF capacitor, capacitor is on the same side as the input.  The output of the resistor is connected, to PRI-S on the input side of the diode 1N5408, which places it between the Primary coil and diode.

In my test system I hooked up the capacitor and resistor with a couple of patch cords to do test so I could add it and remove it easily so I could see what changes.

Test setup.  I have a baseline frequency and gate of 41.67hz which is also the baseline analog frequency.  Gate is set to 50% duty cycle.  The offset and gain is set to minimum levels that I have been using for most of testing.  Frequency to the digital signal is set to 1khz and did not change any of these value during the tests.

For initial test I have scope probe inputs set to DC offset.
CH1- Yellow it the digital side of primary F+
CH2- Bule is the analog side of primary S-

Picture 1 show the input to the primary without the patch and is what I typical see for these settings.  I have set levels to 1V for both sides so you can see the ramp on the analog channels.
Picture 2 is with the patch hooked up.  No other changes I wanted to show ramp on analog signal is still there.  (Hard to see on high scale setting on the scope).
Picture 3 is the same as picture 2 with scope scale set to 5V for both channels no other changes.
Picture 4 is the same as picture 2 but zoomed in
Picture 5 is the same as picture 2 but zoomed in even closer
Picture 6 I did not change setup but did put my differential Probe on CH2 scope probe is set to 100 but probe is 200 so reading off by a factor of 2.  I want to show what signal to cell looks like.  This is without patch.  CH1 is still hooked to primary input and provide scope sync reference.
Picture 7 same setting as picture 6 but with patch installed.  Notice that the signal across cell does not appear to change.
Picture 8 is the same as P7 but zoomed in.

One other thing I noticed is the lock light was now flickering when it was not before.

Nice work Documenting that
should we add to the doc I am adding a thread for the
sma type connections and shielded wire
Dan

working gerber

Yes we should add to document as it is not in any of the schematics and it changes the signal output to Primary.  I already have it in a word document it the format above including pictures. 

ok when ready post i merge it

Vic Merged v2

Changes

1 Grounds tied
2 new traces
3 47 pf changed
4 1 k changed
5 db 37 pins checked
6 flow checked
7 5 volt added
8 gfb extended
9 cell out extended
10 ground q3e added

Option not on yet

Add to pcb the block diode s and f ?
 11 blocking diode added  cell out
12 resistor 220 ohm across primary option added add a resistors across s and F on pcb

Earl

 Please check Gerber Above  to see that

I got all changes and traces right as there was alot to check .

Also
I have room to add the s and  f Diodes before the  primary on pcb  on s and f  traces
so not on transformer or loose wired

also if makes sense too I 
can I add the 220 ohm resistor space
like this as a option  on pcb also ? if it bridge the s and f like this if wrong and in line let me know 

of coarse it is option and if not installed on pcb space i make for it
all still runs fine out S and in F  just for arrays as mentioned prior..

"It's is also possible that 220-ohm resistor at top board was for original
10 cell system to balance primary impendence yet is not hooked up in current VIC.
 Which makes sense as these are bank boards from label on board just look at front panel."

if i have it right or we think we can do it with slight change
than i can add or if any notes welcome comment on labeling  of coarse diode direction is marked

 i add so people know faster

welcome comments or change if i have that plan wrong.
getting it included right  would further reduce assembly errors and uptake of repetitions

Dan 

I installed a smaller sized capacitor not sure of voltage but the capacitor I used above the was 100V as that is all I thought I had.  But check this morning as I had purchased a box of small ceramic caps and it had some .33uf so installed one and got this result.  Wondered about this as picture of board had a small capacitor.  You can see difference in shape in this close in view.

Dan I am not sure what you mean about blocking diodes.  The two on picture of transformer are part of K4 on VIC board.  You could put the 220 ohm resistor near the terminals that feed to primary coil.  Then is would be an option to install it or not.   I think the unused one at top of VIC board originally was used for this.

There is one more but that is between the VIC coils.

Lets get this done too,

I attached what i feel is right any change please advise and i add it

Dan you have been looking at this too long.

I did find a few things that need fixings I think it should be easy to do.  Comments below and I also marked up picture attached.  Not sure what the new traces were.  Also not sure about blocking Diodes to cell but to honest I have not really looked at the interface much.

1 Grounds tied   (still need to connect to Pin 5  GND somewhere )  Recommend doing on Matrix board will be easy there.
2 new traces  Not sure what these are
3 47 pf changed  OK
4 1 k changed    OK
5 db 37 pins checked   See comments
6 flow checked
7 5 volt added  OK
8 gfb extended  No only goes to Matrix  Line to it should go to pin 3 as the line is FD.B.S
9 cell out extended OK
10 ground q3e added OK

Option not on yet

Add to pcb the block diode s and f ?  I think these are already on VIC board
 11 blocking diode added  cell out
12 resistor 220 ohm across primary option added add a resistors across s and F on pcb

 Missing connection to 12V for Q5C and Q4C
Device            B              C                     E
Q5 TIP120   VIC 12     12V Missing         Q4-B
Q4 2n3055   Q5-E      12V Missing        VIC Pin 6
Q3 is (K4 Q9)   VIC Pin 15  VIC Pin 11        GND