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Old 10th July 2012, 05:09 PM   #221
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Helps with gain too, correct, which is a valuable commodity in this particular arrangement, from what I have learned. I have a computer based distortion rig that i will haev to hookup and figure out, so that all this can be tested and made official whwn all is said and done. I have orignal layout ready, and will probably try to throw together this weekend.
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Old 10th July 2012, 05:14 PM   #222
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And you don't need an oven (your wife may force you to clean it afterwards), you need a good size heatsink for measurements.
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Old 10th July 2012, 05:22 PM   #223
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Quote:
Originally Posted by StevenOH View Post
And you don't need an oven (your wife may force you to clean it afterwards), you need a good size heatsink for measurements.
Got two 10" x 12" sinks for old fashioned testing method. Trying to do the quick route with curve tracer, but this part pushes the envelope a little bit.
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Old 11th July 2012, 12:48 AM   #224
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How bout this?
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Old 11th July 2012, 11:47 AM   #225
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Very nice buzzforb
Higher voltage I guess would be a little interesting but, it looks like you could get good results operating in the range you tested.
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Old 11th July 2012, 11:53 AM   #226
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I am going to push it a little further. Just thought it was an interesting set of curves. I think tha max i can push the tracer is 32V and about 2.5A. I can pussh the current again by bypassing the limiter, and see what that brings. Looks a lot like the ZenV8 article graph for the LU, difference being that this thing can take the heat.
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Old 11th July 2012, 02:12 PM   #227
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Hey Buzz
What curve tracer do you use?
I have been thinking of getting one for a while. The one I was looking at was from China. I think a member designed it
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Old 11th July 2012, 02:18 PM   #228
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THats it. It has its limitations in terms of high current/voltage testing, as you can see with the R085 Jfet. I think it is possible to make changes and beef things up a bit, but i dont plan on trying until after i finish batch testing the GB. Exellent buy and ha matched the old method in terms of accuracy. Gives you the advantage of matching an entire curve vs a single point...big advantage.
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Old 11th July 2012, 03:12 PM   #229
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Ok I am gonna buy one. I no longer need high current or high voltage for that matter.
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Old 11th July 2012, 10:25 PM   #230
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Here is the most I can get out of the curve tracer for now.

Here is layout i someone would give it a once over.
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File Type: jpg R085 layout.jpg (203.8 KB, 272 views)
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File Type: doc R085.doc (100.5 KB, 38 views)
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