Joule Thief

[jeanna]

Jeanna . Good Nite here is something you might find interesting on the balun used for tuning in series with a resistor choke coil \ May have been posted before . in my archives


gadget

What is a ballun?

In this the writer describes the results in decibels.
You were away for a while, and I have a possibility to see dB on my scope, but I do not know what it means in terms of things like volts and amps or why it would be used.
Can you explain why it is used for testing?

thanks,

jeanna

[jeanna]

Thanks gadget.
If it says 400 it is 40picoF if it says 100 it is 10 picoF either way it is very small and exactly what Tesla described needing for very fast frequency.
It looks more like 100 than 400, but the bump has a shadow, and it is a bit hard to read for sure.
Either way Thanks for that info.

jeanna

[TheNOP]

@jeanna
in a voltage multiplyer circuit, the bigger the caps values, the more amps you will get at the output.
if your supply can provide it that is.


a balun is a type of transformer that can convert signals that are balanced(relative to the "ground") to signals that are unbalanced.

They are also often used to change impedance.
ex: high impedance to 8 Ohms impedence audio transformer.

A balun's function is generally to achieve compatibility between systems, and as such, finds extensive application in modern communications, particularly in realising frequency conversion mixers to make cellular phone and data transmission networks possible.

An RF choke can be used in place of a balun.

[jeanna]

hmmm theNOP,
can you put that into layman's terms?

balanced relative to ground?? ??

in a voltage multiplyer circuit, the bigger the caps values, the more amps you will get at the output.

Tesla wasn't looking for amps. He wanted to get frequency of spikes instead of dc amps.

thanks,

jeanna

[Mk1]

@all

The question is when does ac star working looking like dc , at a real high freq would it look like a constant .

@gadget

I will send it to you this week !

Mark