LDMOS Power Supply Security Circuit (Part-2, English) 

( German language version: • Sicherheitsschalter fü... )
handles various issues when connecting a power supply to an RF power amplifier. On/Off, Pre-charging, overcurrect protection.
This second part shows the functions in practise.
I use this board in all my LDMOS amps to switch the 50V supply and to secure the expensive transistors in case of errors or short custs.
My homepage: www.dj0abr.de
Boards are available here: www.helitron.de...