Author Topic: My pll circuit  (Read 25361 times)

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Re: My pll circuit
« Reply #88 on: October 17, 2012, 13:49:36 pm »
 :D Steve

I'm thankful to your efforts, i see your feeling good about the forum issue solved, i'm happy for that too!!! ... I get this sensation about my little box here too=) Becareful with the wife bro  8) 8) 8) 8) kkkk Mr Steve Meyer

New schematic...  new ideas... the establishment can't hold me down...

New video

this quick video show the scan and manual tuning of pll circuit at work...
« Last Edit: October 18, 2012, 03:48:52 am by sebosfato »

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Re: My pll circuit
« Reply #89 on: October 17, 2012, 21:57:31 pm »
in that schematic those 11 pins are wrong suppose to be 12...


I just found a great feature of the box i built, it has H bridge full wave square output, or two half bridge outputs 180° de-phased... thought...

Now is time to build some new cells for testing.

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Re: My pll circuit
« Reply #90 on: October 18, 2012, 18:58:56 pm »
Hi Sebosfato
Can you share schematic of your H bridge?
thank
andy

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Re: My pll circuit
« Reply #91 on: October 18, 2012, 20:45:26 pm »
here it goes...

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Re: My pll circuit
« Reply #92 on: October 19, 2012, 14:27:35 pm »
If you want you can use a positive voltage regulator just need to connect the reference floating positive to this rail.

in this schematic Q1 Q3 and one neg diode are at the same heat sink while theres same config for Q2 Q4 and the other neg diode in another heat sink, while diodes connected to positive side sits at another heat sink...all isolated from each other..

The mosfets could be all NPN but in that case each should have its own heat sink...  this way it can be made more powerful... for it to work with only npns you need to change the position of the load resistors at the optoisolators such that the signal become inverted or simply replace the ir4427 with a ir4426 at the floating circuit...

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Re: My pll circuit
« Reply #93 on: October 19, 2012, 16:27:39 pm »
Thank you Sebosfato
andy

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Re: My pll circuit
« Reply #94 on: October 19, 2012, 22:18:59 pm »
ops incomplete info..

another change needed for using only npns is that you need a fourth transformer because each side of the bridge will require isolated inputs.. so also increase a lot complexity... also being it a npns...in each side the reference will be floating and i'm not sure if this complexity is better or not than using pnps... the floating is not at the same position too so 2 regulators must be used. the references will be the outputs of the bridge for sake of clarity, instead of the positive rail.

so to increase power add many in parallel instead of using the npns only...   

My schematic should be nice enough
you welcome

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Re: My pll circuit
« Reply #95 on: October 21, 2012, 05:42:08 am »
made some nice tests today and got a pnp mosfet and a optocoupler zapped... on the H bridge...
the scanning circuit makes a nice sound at the core junction in the audible range...

all working again... pretty nice indeed...

at 25v variac it puts out a nice 50v square wave on the oscilloscope... peak to peak...
« Last Edit: October 21, 2012, 16:30:31 pm by sebosfato »