SM CIRCUIT Revised, Simplified

Started by unknown · 5 February 2012 · 3 posts · last reply 6 February 2012

1. ali

   #1 · date not recorded

   PCB Express was used to create this circuit, taken from stan's vic cards and schematics, verified components, changed the IC power filtering caps to 100pf and added a selector switch to the two electrolytic caps for the scanning circuit to get different scan rates ( Unsure if the original cap was 1uf or 10 uf)
   
   so this should give us a good starting point with the custom u core VIC coil using 29 ga wire and testing on a single tube set 3 " long covered in delrin
   
   let me know what you think, ive tested many sections of this schematic in multisim, made a few simplifications like no safety circuit, no figure 2 for variable voltage pulse width and no input from figure2 for injector timing...you will need filtered 12 vdc and the schematic may need additional 5 volt regulators depending on current draw for the chips that use 5 volts.
   
   

    PCBExpress_VicCircuit_simplified.sch

2. ali

   #2 · 5 Feb 2012

   Here is a better schematic...circuits are also broken out into individual sheets like the patent circuits, but there are some modifications to make them better
   
   also the filter caps for the ICs are set at 120pf, remember to mount those very close to the chip like in the photos to reduce noise
   
   also dont forget to tie the unused inputs or outputs of these 40 series chips to the positive or negative rail to avoid noise
   
   check the datasheets for details on what ICs are affected in this way.
   
   Open file with PCB EXPRESS software ( free)

    PCBExpress_VicCircuit_simplified.sch

3. ali

   #3 · 6 Feb 2012

   OK still doing inventory on the parts and found a couple of errors based on the dynodon sketches and VIC photos...
   LM 318 should be LM 918m on the feedback circuit
   
   this is schematic version 3, even better than the last one
   
   PS I was looking at the photos of the VIC controller card and i see where pin 4 of the pll goes to point g on the cell driver circuit, but the Capacitor that ties the pin 3 of the PLL to the output of the TIP120 (Q9) in FIgure 5 vis a 22k (R59) was drawn wrong in the last two uploads of the circuit, dons sketch shows it as a .35nf cap green mylar
   
   i changed the filtring caps for the integrated circuits to 120pf because im not using a variable voltage supply, i simply want to run a cell at full output (12v)

    PCBExpress_VicCircuit_simplified_Ver3.sch