I have heard that there should be a particular ratio of leakage
inductance and inter winding capacitance in an output transformer,
only then maximum high frequency response is achieved in OPT.
If there is such a thing then what should be ratio?

Thanks

Jeff Kapp wrote:

I have heard that there should be a particular ratio of leakage
inductance and inter winding capacitance in an output transformer,
only then maximum high frequency response is achieved in OPT.
If there is such a thing then what should be ratio?

Thanks

That's a good question, and first the leakage inductance
should be a value at least 20,000 times less than the primary
inductance,
and this small value of inductance and the shunt capacitance should
form a resonant circuit at a frequency above 80 kHz.

But this is a terribly simplistic answer, and to really understand
what is required, you should read and study RDH4 on the subject,
and then perhaps move on to
http://www.turneraudio.com.au/htmlwe...utputtrans.htm
where a few things are further explained about building a practical
OPT.

Patrick Turner.

"Patrick Turner" wrote in message
...


Jeff Kapp wrote:

I have heard that there should be a particular ratio of leakage
inductance and inter winding capacitance in an output transformer,
only then maximum high frequency response is achieved in OPT.
If there is such a thing then what should be ratio?

Thanks

That's a good question, and first the leakage inductance
should be a value at least 20,000 times less than the primary
inductance,
and this small value of inductance and the shunt capacitance should
form a resonant circuit at a frequency above 80 kHz.

But this is a terribly simplistic answer, and to really understand
what is required, you should read and study RDH4 on the subject,
and then perhaps move on to
http://www.turneraudio.com.au/htmlwe...utputtrans.htm
where a few things are further explained about building a practical
OPT.
Interlayer insulation had to be thick to minimise capacitance, and thin to
minimize
leak.
Wich insulating material have the lowest dielectric K ?
The more interleaving value, the less the leak, the higher the parasitic
capacitance.
Here is the challenge.(IMHO !)

Yves

Patrick Turner.