Now that we have a first version for a VIC pcb we can start working on an improved version. I think we can start with the following:

- The variable pulse generator was used for several different purposes. In the VIC it only needs to generate the gating frequency pulse signal so we could suffice with a 555 timer for that. Range should be from 1 - 1000 Hz ?

- Any ideas about how we can simplify the gating duty cycle schematic (gated pulse generator) ?

- The resonant scanning  circuit probably can be replaced by a 'sample and hold' network (filter of two resistors and a capacitor) which will save a lot of components and have the 4046 pll continuously track the resonance signal.

So everybody, hop on and lets discuss all possible improvements we could make to the vic schematics to make it as simple and small as possible!

I have many ideas, but, I suggest to use the expensive time to power up the theory, and when we reached the point where we know the exact form of resonance and we have gas production, the circuit can be simplified.
The sample hold circuit is a good idea.  
Now i`m using as gating a single 555 whit variable pwm output.  

NIce well done
 
please keep versions and differen parts, makers versions  in seperate threads.
so pepole can follow them may also learn from different versions.

please be sure to
post    gebers to this thread s   also so not lost


 parts list,
schematics
and wiring drawings.

put contact details on thread ot in industry contact direct so people can order for test beds. or practive builds if available

Dan
 

Quote from pakakezu on April 25th, 2012, 06:44 AM

I have many ideas, but, I suggest to use the expensive time to power up the theory, and when we reached the point where we know the exact form of resonance and we have gas production, the circuit can be simplified.
The sample hold circuit is a good idea.  
Now i`m using as gating a single 555 whit variable pwm output.

unfortunately that doesn´t work that way. once one has set up a working circuit he´ll see that there are many resonant patterns. whenever coils are used and pulsing there are many different resonances and the only way to find the optimum is experiment.

I also tried the theoretical approach. By calculation, by using Spice but the only way to check the operation condition is experiment ...
I also tried to set up the calculated conditions and then told the cell to "produce" but the cell didn´t understand. at least the cell didn´t raise production under the calculated conditions :P

Quote from Sharky on April 25th, 2012, 01:49 AM

Now that we have a first version for a VIC pcb we can start working on an improved version. I think we can start with the following:

- The variable pulse generator was used for several different purposes. In the VIC it only needs to generate the gating frequency pulse signal so we could suffice with a 555 timer for that. Range should be from 1 - 1000 Hz ?

- Any ideas about how we can simplify the gating duty cycle schematic (gated pulse generator) ?

- The resonant scanning  circuit probably can be replaced by a 'sample and hold' network (filter of two resistors and a capacitor) which will save a lot of components and have the 4046 pll continuously track the resonance signal.

So everybody, hop on and lets discuss all possible improvements we could make to the vic schematics to make it as simple and small as possible!

Use a µC instead of the discrete components you talk about.

I think it´s not time to optimize the overall circuit until there are some experimental results showing up some weak points in V1 configuration.
As long as operational parameter are poorly known all circuit components must be oversized in functionality and absolute maximum ratings.
as long as one doesn´t know exactly what operational conditions he´s looking for he must use some kind of laboratory equippment oversized and heavily equipped for all kind of observations. though this forum tries to set up a workload sharing approach to Meyer´s technology actual status here  is far away from line production.

when Meyer talked about KISS he didn´t talk about exchanging a complex PLL circuit by 2 resistors and a capacitor but he talked about simplification of construction design in industrial mass production and little effort to retrofit whatever kind of car at little costs. he did that AFTER he had set up a working system.

Hi,

Idea for the next VIC pcb we could add a VAC (Voltage Amplitude Control) and a simple PWM (variable duty cycle) generator for this circuit.

We don't need all the divider ICs and set a fixed frequency for the VIC coil packs.
 
Simple PWM circuit
http://www.robotroom.com/PWM.html

Br,
Webmug

Quote from Webmug on May 11th, 2012, 02:20 AM

Hi,

Idea for the next VIC pcb we could add a VAC (Voltage Amplitude Control) and a simple PWM (variable duty cycle) generator for this circuit.

We don't need all the divider ICs and set a fixed frequency for the VIC coil packs.
 
Simple PWM circuit
http://www.robotroom.com/PWM.html

Br,
Webmug

I agree that the gating control is very much more complex than actually needed. Typical example that the vic circuits where systems design versions and far from the most efficient way of doing things. Also those decade counters and stuff like that are no longer in production and getting expensive in some parts of the world.

I uploaded a first, empty version of the kicad project, .... feel free to kickstart the VIC2.0 design!