10-1 gain amp

105

00:46:58

Hey everyone!
I am working on a PWM teslacoil driver based on an nte1729. This controller modulates the output by using audio into the dead time controller input. That circuit can be found here http://www.hvlabs.com/plasmasonic.html .

So all in all it makes a singing teslacoil.

This circuit is a preamp to get headphone level output (measured at 200mv p-p, full vol) from my old phone to be about one volt p-p.

Any suggestions to get the best possible audio out of this would be fantastically appreciated! I am an audiophile after all ;)

published 9 years ago

WTFCircuit

9 years ago

Just change method, controlling a tesla coil with a pwm signal can be a lot inefficient and counterproductive, especially if the duty cicle exceed 50%. Also in the article you provide do NOT talk about tesla coils, but a normal high voltage transformer, two completely different thing when comes the driver circuit. A regular transformer is much, much easier to drive compared to a tesla coil.

afinchum

9 years ago

Thanks for reading the article! And Very true, im actually going to use the main modulation frequency to drive a push pull power transformer at its resonant frequency, then using the two wire output of that go to a modest NST so it can oscillate a HV tank circuit at its resonant frequency. I plan to operate around or slightly under 50% so i can make 'smooth' signwaves on the initial tank circuit.. Sorry for the rough explanation, i will make another circuit showing what i mean and link it here later today. I am very interested in getting as high of quality sound out of the class D amplifier. Thank you much for your time!

WTFCircuit

9 years ago

Stil not a tesla coil though 😂

afinchum

9 years ago

Okay well EC crashes whenever i put two square wave generators on a "center tapped" transformer with a ground... And i cant save it..

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