Tom Rauch wrote:
> Peter wrote:
> That´s the efficiency I always wanted to obtain!>>
>
> Someone else wrote:
> Input power is 500WDC, Output is 470W PEP, not key down CW.
> >>
>
> DC input power is power indicated on plate voltage and
> current meters. It is an average power. it would indicate
> the sum of the two tones in respect to input power.
>
> RF output power is PEP, which would be four times the single
> tone or two times the average power in a two-tone test.
>
> So we have:
>
> 1000W PEP input, and 470W PEP output. 47% efficiency
>
> or we could view it:
>
> 500W average input and 235W average output 47% efficiency
>
> Technology to build a very good PEP meter was available as
> soon as man invented and learned how to work with the
> capacitor, diode, resistor, and meter. My assumption is most
> people working in electronics knew all four important things
> long before 1960.
I was surprised to learn that the silicon point contact diode was
patented in 1906.
Steve
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