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ive had nothing but bad luck with microwave oven caps, internal resistorsOriginally posted by spark2 View PostDo not be discouraged Eng I think you are on track.
For cheap parts look at the capacitors and HV diode of old oven microwave, they are good alternatives in series and in parallel. Available and very high voltage.
regards spark2
In the beginner's mind, there are many possibilities.
In the expert's mind there are few.
-Shunryu Suzuki
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motor run caps r best!Originally posted by mr.clean View Postive had nothing but bad luck with microwave oven caps, internal resistors
also
How to remove the bleeder resistor in microwave capacitors.
rgds
z
z
z
zLast edited by zilano; 06-08-2012, 08:33 AM.
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I think I've tried that setup with SG in series and did not work. But to be sure I try it again.Originally posted by zilano View Posti see it as u have wrongly connected ur spark gap and capacitor. connect as Don bertonee way but not Tesla Way as u have Diode in built in ur Flyback.
SEE IMAGE BELOW
I see U HAVE LATEST FLYBACK WITH INBUILT DIODE CONNECT ACCORDINGLY AS SHOWN IN FIGURE.
ITS BEST TO CONNECT THE FLYBACK WITH DON WAY AS SHOWN IN BERTONEE CIRCUIT BELOW. JUST REMEMBER
THE SPARK IS BETWEEN GROUND PIN AND LC CAP COMBINATION.
U CAN USE OTHER METHOD ALSO BELOW BERTONEE FIG. WHERE HT OF FLYBACK IS CONNECTED TO CAP THEN SPARKED TO COIL.
HOPE U GET IT WOT I MEANT IF NOT SHOOT UR QUERY.

Today I hooked secondary with diodes as Avplug to MO cap and it was charging
Thanks
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maintaining resonance
Zilano would You please be so kind...
Will you give an example of how the calculation goes for maintaining resonance between primary and secondary when the natural frequency is used.
What is the natural frequency of the 12 m long wire and what of the 3 m /2x1.5 m/ long wire / this is a step down type /
I gave this parameters, if it is not god use another.
L1 parameter: L2 parameter:
12 m long 2x1.5m long
1 mm diameter wire 3 mm diameter wire
77 turns 7+7 turns
43 mm diameter of the coil former 50 mm diameter of the coil former
L1 for example measured with LCR meter gives the value 70uH and 3 pF
L2 for example measured gives 2 uH with 2.5 pF each of the two coil or let say 4 uH and 5 pF when joined
The output of the HV module /flyback transformer/ is 2000V and 25KHz
Here is a schematic :
first of all we are seeking for C1
Don't want You to feel under pressure but it will help a lot
rgds blackrobiAttached Files
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SEE FIGUREOriginally posted by Guruji View PostI think I've tried that setup with SG in series and did not work. But to be sure I try it again.
Today I hooked secondary with diodes as Avplug to MO cap and it was charging
Thanks
Attached Files
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wound using lamda/4 and 4 lamda with weights of primary= secondaryOriginally posted by blackrobi View PostZilano would You please be so kind...
Will you give an example of how the calculation goes for maintaining resonance between primary and secondary when the natural frequency is used.
What is the natural frequency of the 12 m long wire and what of the 3 m /2x1.5 m/ long wire / this is a step down type /
I gave this parameters, if it is not god use another.
L1 parameter: L2 parameter:
12 m long 2x1.5m long
1 mm diameter wire 3 mm diameter wire
77 turns 7+7 turns
43 mm diameter of the coil former 50 mm diameter of the coil former
L1 for example measured with LCR meter gives the value 70uH and 3 pF
L2 for example measured gives 2 uH with 2.5 pF each of the two coil or let say 4 uH and 5 pF when joined
The output of the HV module /flyback transformer/ is 2000V and 25KHz
Here is a schematic :
first of all we are seeking for C1
Don't want You to feel under pressure but it will help a lot
rgds blackrobi
wound the primary on plastic tube that is slideable inside the secondary which is wound on the plastic tube.
now take primary coil wound on plastic tube attach LCR meter and note down L and C
do same for secondary but not with primary inside secondary and note L and C with LCR meter and use frequency calculator to find natural resonant frequency of ur coils.
LC Resonance Frequency Calculator at WhatCircuits.com
if u follow rule lamda/4 and 4 lamda then frequency will be approximately same for L primary and L secondary. and if there comes difference
it can be adjusted by sliding primary inside secondary.
remember
to calculate lamda length for full wave half wave and quarter wave
use this
Online Conversion - Frequency Wavelength Calculator
hope this helps
ps: since u r using coil natural capacitance and external capacitor also so the frequency is changed from natural frequency. so if u use cap + coil combination then u have C= C of coil(parasitic capacitance)+ C of cap.
natural frequency works when u dont attach any caps to coil and just work with L and parasitic capacitance of coil C( capacitance that happens naturally happen to be between turns of coil.)
refer my older deleted posts and u will learn more. and read Don document and 246 thing.Last edited by zilano; 06-08-2012, 05:59 PM.
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thief circuit
hi all
today i test a half of thief circuit
it is work as you see in pic
test for half of thief circuit.jpg
IMG_0079.JPG
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Originally posted by mainsen View Post@zilano:
didnt u once say serial spark gap wont give overunity? Cause in ur newest drawings u have it serial?
Or I misunderstood u there?
Or parallel spark is only for conversion from cold to hot after charge cap?
Kind regards
yes only for cold to hot conversion. just follow the don bertonee way of connecting primary then u will have less problems in secondary side.
rgds
....
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if u can get ferrite rings say 10 ferrite rings of same diameter as thief circuit uses ferrite ring core. u will have overunity in ur circuit. the dotted lines u see r ferrite core rings in thief circuitOriginally posted by Eng.raied View Posthi all
today i test a half of thief circuit
it is work as you see in pic
[ATTACH]11376[/ATTACH]
[ATTACH]11377[/ATTACH]
experiment n explore u r right on track. Good luck and best wishes.
....Last edited by zilano; 06-08-2012, 07:55 PM.
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hi zilanoOriginally posted by zilano View Postif u can get ferrite rings say 10 ferrite rings of same diameter as thief circuit uses ferrite ring core. u will have overunity in ur circuit.
....
i have but not same size .
i rewinding my device according to rules of length
but step down not as don smith step up is same rules
my cables length is 16 m and 4 m
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different ferite ringsOriginally posted by Eng.raied View Posthi zilano
i have but not same size .
i rewinding my device according to rules of length
but step down not as don smith step up is same rules
my cables length is 16 m and 4 m
stick em togather and use them. listen solve step down later try to get overunity first. if u have less power fed than output its the best thing. step down can be done later in stage of plauson convertor. just experiment how to get more amps of the circuit using plauson.
more bright and hot bulbs means more amps out.
HINT: THERE IS A RESONANCE RELATION BETWEEN HV SPARK CIRCUIT AND THE LOCAL OSCILLATOR OF THE TWO TRANSISTOR CIRCUIT IN THIEF CIRCUIT. IF U CATCH THAT U WILL HAVE OVER UNITY.
....Last edited by zilano; 06-08-2012, 08:13 PM.
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Today I've did this and works well. I did a vid to the toroid and bulb which ends in an arcing on my toroidOriginally posted by zilano View PostSEE FIGURE

Don Smith primary driver to toroid - YouTube
My secondary is charging the MO caps as I've said before with the avramenko diodes to an SG.
I've tried to light the bulb on the secondary SG but invain maybe I need more HV caps.
Thanks.
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ok i will work on step up nowOriginally posted by zilano View Postdifferent ferite rings
stick em togather and use them. listen solve step down later try to get overunity first. if u have less power fed than output its the best thing. step down can be done later in stage of plauson convertor. just experiment how to get more amps of the circuit using plauson.
more bright and hot bulbs means more amps out.
....
concern to thief circuit what value of capacitors and what do the second half of circuit?Last edited by Eng.raied; 06-08-2012, 08:26 PM.
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