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30th May 2010, 04:22 PM
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#1 |
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diyAudio Member
Join Date: May 2009
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6V6 PP load line
Hi,
I'm just wondering that how the load line to a push-pull 6V6 pair should be drawn. The datasheet ( http://boozhoundlabs.com/howto/pdf/6V6GT.pdf ) has an example bias point with 70mA idle current, grid voltage -19V and B+ of 285V. When looking at the plate curves, it would appear that at 285V B+ and -19V grid, the idle current would be around 25mA. So, what I'm doing wrong? 
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31st May 2010, 02:28 AM
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#2 |
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diyAudio Member
Join Date: Oct 2004
Location: Maui, Hawai'i, USA
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They'll be quoting current for the pair, a common convention in PP output stages. In my experience, 35mA/device is about right for 285v and -19v, depending on the particular tubes; the current production Russian stuff takes about 3 volts more bias for the same OP.
Poinz AudioTropic |
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