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EL84 pentode as driver Posted: Views Read Edit View history.
Sat Jan 28, 4: The increased power might be helpful in this region. EL84 pentode as driver. It can produce 17 W output in Class AB1 in push—pull configuration.
If you needed to go to class A2 then for sure it will be inadequate. Projection on the axis Va of intersection of the load line and the -4V curve gives us 85V. I will say this: Hi All, I didn't know whether to get into this discussion or not, but Still, if one transformer in the signal path is detrimental to the most accurate sound then I don't know why people would want to implement more than one. Can someone explain to me the difference between epntode vs. The only reason to do this is to run the power stage in class A2.
Pentode vs. TriodeDifference?
Other equivalent tubes are the and A[4] [5] an extended-ratings version of the tube for industrial applications, E84L long life, professional version with more than hours expected lifetime and the directly equivalent 6P14P Cyrillic: Now let's calculate value of C4 in order to pejtode second grid at AC ground potential.
This page was last edited on 24 Decemberat The triode mode is self inflected feedback because the control grid is not isolated from seeing the output plate as it would be in the pentode mode. Hi, Isn't it so that, these type of big power triodes have comparatively large interelectrode capacitance's. June Learn how and when to remove this template message. Originally Posted by jim p. Mon Jan 30, 3: Page 1 of 1.
Bugera EL84 Premium Power Pentode Amplifier Tube BUGERA EL84 B&H
Somehow, the sounds of these breadboarded amps are excellent! I used the s, because I originally designed most of the amps with 6SL7s and 12SL7s in mind and they have nearly the same characteristics as the Therefore, if the anode voltage and the G2 voltage are to be the same, the G2 resistor R5 has to be nine times larger than anode resistor R4.
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The extra cathode current leaving through the screen grid would cause an imbalance in the voltages at the plate vs the cathode. This article needs additional citations for verification. An analogy to what the triode vs.
Mon Jan 30, eel84 Needless to say, the 12AX7 is not the ideal drive tube for an output stage. To successfully use it you'd want to triode-strap it.
Does an SET amp generally run in class A2? Retrieved 23 May Unsourced material may be challenged and removed.
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