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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: what triode/pentode ? That's interesting! posted by grhughes on January 31, 2006 at 14:47:19:
Hi, Ray -Yes. It's been a while and I only built a prototype, so I won't be able to recall precisely which one without digging into some old notes. A really interesting feature about this circuit is that it let me hear (over headphones) exactly how microphonic the long tailed pair input tube was by tapping on the bulb. A good 12AX7 would return hardly any input as compared to 12at7's grid wires obviously vibrating while all the 6DJ8's I tried tapping made sounds similar to glass breaking, this all correlating strongly with transconductance.
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- Re: what triode/pentode ? That's interesting! - Tom Dawson 15:11:25 01/31/06 (0)
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