Drawing Load Line for Parallel Output Tube

blue andry · 2nd September 2010, 10:40 AM

Hi ,

can somebody advise me how to draw a load line for parallel output tube ?

any help or link to recommended reading will be appreciated ,

Thanks

DF96 · 2nd September 2010, 11:27 AM

Just like one output valve. Then double current/halve resistance.

Yvesm · 2nd September 2010, 01:05 PM

Or "relabel" the current axis (vertical) doubling the printed values and do as usual

Yves.

blue andry · 4th September 2010, 05:12 AM

Hi ,
thanks for all your guys help .

i assume we just have to multiply n output tube per current axis or
divide transformer impedance per n output tube , is is right ?

how do we recalculate our grid voltage swing on parallel load line to determine
our drive stage output voltage ?

is it we have to multiply n output tube per initial grid voltage swing ?

planning to build parallel single ended by the end of this year ...

regards

torrence · 4th September 2010, 05:58 AM

The control grid should draw almost no current, so there is essentially no difference in the input drive voltage needed. The output voltage swing is also the same, but you get twice the current through half the resistance.

2nd September 2010, 10:40 AM	#1
blue andry diyAudio Member Join Date: Nov 2009	Drawing Load Line for Parallel Output Tube Hi , can somebody advise me how to draw a load line for parallel output tube ? any help or link to recommended reading will be appreciated , Thanks

4th September 2010, 05:12 AM	#4
blue andry diyAudio Member Join Date: Nov 2009	drive stage for parallel output tube Hi , thanks for all your guys help . i assume we just have to multiply n output tube per current axis or divide transformer impedance per n output tube , is is right ? how do we recalculate our grid voltage swing on parallel load line to determine our drive stage output voltage ? is it we have to multiply n output tube per initial grid voltage swing ? planning to build parallel single ended by the end of this year ... regards

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2nd September 2010, 11:27 AM	#2
DF96 diyAudio Member Join Date: May 2007	Just like one output valve. Then double current/halve resistance.

2nd September 2010, 01:05 PM	#3
Yvesm diyAudio Member Join Date: Jul 2004 Location: Ardeche	Or "relabel" the current axis (vertical) doubling the printed values and do as usual Yves.

4th September 2010, 05:58 AM	#5
torrence diyAudio Member Join Date: Feb 2008 Location: Oregon	The control grid should draw almost no current, so there is essentially no difference in the input drive voltage needed. The output voltage swing is also the same, but you get twice the current through half the resistance.

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