开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

Final amplifier Bias


"Yannick (XV4TUJ)"
 

Hi.

Having few spare time in october I just finished assembling the beacon kit.
Everything seems running ok but I am not happy with the 2N7000 bias setting.
Running the beacon at 5-6V, even with the potentiometer fully clockwise turned, I have more than 6V peak-to-peak on a 50r load.
Nothing bad but the FET is running too hot for me. The documentation states that it should not get noticeably warm...

What can I check / do ?

Thanks by advance for your help.
73,
Yan.
---
Yannick DEVOS - XV4TUJ
(Blog in french)
(web page in english)

Join [email protected] to automatically receive all group messages.