### Author Topic: Restrict Amps with Source Voltage Amplitude  (Read 5328 times)

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• let the voltage do the work
##### Re: Restrict Amps with Source Voltage Amplitude
« Reply #8 on: January 05, 2013, 09:22:54 am »

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##### Re: Restrict Amps with Source Voltage Amplitude
« Reply #9 on: January 05, 2013, 11:41:04 am »
from Alex's circuit,he use gate freq=50 hz,pulse freq=10 khz.

-80mH and 20nF,from calculate resonant=3978.87 hz
-40mH and 20nF,from calculate resonant=5626.98 hz

he said 40kv but no use correct resonant frequency.why??---->harmonic frequency.from 50 hz and 10 khz to hit resonant frequency!! i think.

thanks
geenee
« Last Edit: January 05, 2013, 12:06:45 pm by geenee »

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##### Re: Restrict Amps with Source Voltage Amplitude
« Reply #10 on: January 06, 2013, 00:23:41 am »

-80mH and 20nF,from calculate resonant=3978.87 hz
-40mH and 20nF,from calculate resonant=5626.98 hz

You're a little off with your numbers there...they should be:

80mH & 20nF = 2814 Hz
40mH & 20nF = 3979 Hz

*rounded to nearest whole number*

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##### Re: Restrict Amps with Source Voltage Amplitude
« Reply #11 on: January 06, 2013, 07:08:57 am »
what equation do you calculate(LC)? Tonywoodside.

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geenee

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##### Re: Restrict Amps with Source Voltage Amplitude
« Reply #12 on: January 06, 2013, 07:21:52 am »
(http://sub.allaboutcircuits.com/images/12091.png)

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##### Re: Restrict Amps with Source Voltage Amplitude
« Reply #13 on: January 06, 2013, 08:43:09 am »
To Tonywoodside.
about basic voltage control circuit.if use tip120 with 3055 then impedance will be high(Z=15Mohms).if impedance matching,Z primary=Z secondary.impedance of secondary =15Mohms --->very big coil???i am not good in electronic. Is impedance matching importance??

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geenee

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##### Re: Restrict Amps with Source Voltage Amplitude
« Reply #14 on: January 06, 2013, 18:35:39 pm »
Yes, impedance matching is very important in electronics. It allows the most efficient power transfer and a perfect signal.

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##### Re: Restrict Amps with Source Voltage Amplitude
« Reply #15 on: January 06, 2013, 23:01:19 pm »
That's right TS! The way the power supply is configured, it will keep the transformer from becoming saturated.

Here's a simple way of making the Voltage Control for testing purposes.

Just added this inline with the coil.  I am FINALLY getting a gated wave form I have been looking for!

The voltage control is a definite must have to make this work.

TS