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Re: Supply current question


"Yannick"
 

Hi.

Thanks for the references you gave.
I measure my DC consumption and it is around 137mA at 5,5V with 100mW RF out.
That confirm my 2N7000 could draw more than expected and why it is hotter than I'd like it to be...

73,
Yan.

--- In QRPLabs@..., "g4ilo" <julian.g4ilo@...> wrote:

Mine draws 65 - 70mA at 5V for 50mW out. When I increased the power to just below 100mW (which was the peak in my case) it increased to 120mA. Increasing the bias voltage beyond that it was more current for less power out. I settled for 50mW output to get better battery life.

Julian, G4ILO

--- In QRPLabs@..., "Neil" <g7aqk.uk@> wrote:

I have now managed to complete my 30m QRSS kit and was wondering how much current they should draw from the supply. Mine pulls roughly 100mA from 4 x AA batteries in series. Does that sound about right?

Neil

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