Re: LF: Pout vs V for class D amp?

[Andy Talbot <andy.g4jnt@gmail.com>]

Take a look at http://www.g4jnt.com/137tx.pdf

All the equations you need are in there

and "single ended" in that context refers to class A / B   not E

Class E is a special (quasi resonant) type of switching transmitter

Andy

On 29 March 2018 at 23:18, N1BUG <paul@n1bug.com> wrote:

Some months back, Andy gave me this formula for calculating power
out of a single ended (class E) PA. It has been very helpful.

Pout max = Vdd ^2 / 2 / RL

Is there a similar formula to calculate power out of a class D
voltage mode PA (such as the W1VD design)?

I'm almost finished building my W1VD PA and I am wondering what
power output I can expect at different power supply voltages. I need
to make some sensible decisions about power supplies...

Thanks,
Paul N1BUG