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Old 18th June 2017, 05:50 PM   #221
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They are all fine. Being SITs, you can easily adjust the 2nd harmonic
amplitude and phase on all of them to get much the same effects.

One thing you might want to try is bridging two of these, one with the 2SJ
and the other with the 2SK.
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Old 18th June 2017, 07:22 PM   #222
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For lower distortion? I'm surprised you don't get better cancellation with two of the same sex.

I did try bridging two same sex on LtSpice, and it suggests that the THD is better, but I am doing something silly: I mirrored the circuit leaving two independent CCS's to enable independent adjustment of the idle current. But of course the circuit clips at the same point as with a single device. I assume whats happening is that as the current goes back and forth through the load, the maximum current limit is hit on `one side' and then the other and is limited by the CCS in either case. So it doesn't help dissipation or max power. I either need to get smarter or failing that I'm trying a circlotron

Last edited by BeardyWan; 18th June 2017 at 07:35 PM.
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Old 18th June 2017, 07:30 PM   #223
plasnu is offline plasnu  United States
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Quote:
Originally Posted by Nelson Pass View Post
One thing you might want to try is bridging two of these, one with the 2SJ
and the other with the 2SK.
I'm interested in the outcome.
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Old 19th June 2017, 05:27 PM   #224
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Quote:
Originally Posted by BeardyWan View Post
For lower distortion?
No, rather for the entertainment of having a 2nd harmonic character.
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