Hi,
I'm wanting to build with 6V6 driver and need to swing 180vp-p across the inductive plate load, assume voltage gain of 9 from the 6V6, I need 20vp-p at the grid.
I was looking at 6SN7, maybe without the bypass capacitor, seems that with an input voltage of 5vp-p max, a voltage gain of 10 should be okay. I found this Komuro design, it seems there are some irregularities with the circuit; the 47k on the input tube looks like it should be 33k, assuming 4.8mA, and 10V bias on the 6V6 seems marginal (would have suspected close to twice that). Yet, it seems to be very well received and I'd use it as a starting point.
Has anyone built this circuit and okay to comment, I wonder how correct the schematic is to the 'original', and also if 100V across 6SN7 is a considerable compromise?.
Thanks,
Jacob
I'm wanting to build with 6V6 driver and need to swing 180vp-p across the inductive plate load, assume voltage gain of 9 from the 6V6, I need 20vp-p at the grid.
I was looking at 6SN7, maybe without the bypass capacitor, seems that with an input voltage of 5vp-p max, a voltage gain of 10 should be okay. I found this Komuro design, it seems there are some irregularities with the circuit; the 47k on the input tube looks like it should be 33k, assuming 4.8mA, and 10V bias on the 6V6 seems marginal (would have suspected close to twice that). Yet, it seems to be very well received and I'd use it as a starting point.
Has anyone built this circuit and okay to comment, I wonder how correct the schematic is to the 'original', and also if 100V across 6SN7 is a considerable compromise?.
Thanks,
Jacob
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