Royer Inverter Circuits

[barry wilkins]

I have been working on some inverter designs, a coulple of things have made me think a little bit .
In the supply of the current to the transformer there is a choke ,am I right in thinking this is a desaturation choke to prevent the transformer saturating or "walking".
I am having a slight problem with the coupling between the primary and secondary windings ,it seems that I have to adjust this somewhat to reduce the coupling factor other wise the circuit starts to draw excessive current.

Barry Wilkins

[japlytic]

Re: Royer Inverter Circuits

An example of a Royer inverter circuit is in the Linear Technology LT1184/LT1184F datasheet.
Also see http://en.wikipedia.org/wiki/Royer_oscillator .

[redwire]

Re: Royer Inverter Circuits

Take a look at some of the Zetex app notes using Royer converters, mostly for CCFL. Not much is out there about their design. Google "zetex royer"
Zetex appnote an14.pdf

[barry wilkins]

Re: Royer Inverter Circuits

Thanks guys

Barry Wilkins