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GU50 Screen Driven, DC Coupled

My new idea with GU50. Screen driven and DC coupled. Is that possible?

Very first schematic:
 

Attachments

  • GU50 SCREEN DRIVEN.png
    GU50 SCREEN DRIVEN.png
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artosalo

Member
2010-02-16 9:00 am
It is possible, but screen drive is not very linear and high driving level is required.
With 100 Vpp the output power is some 3,3 W (2k5 OPT), THD = 6 %
With 240 Vpp, 13 W, THD = 14 %. Distortion is mainly 2nd harmonic.
All the above values are from LT Spice simulation.