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1. [AMPS] Tetrodes vs Pentodes (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Wed, 11 Jun 1997 09:03:00 EDT; What are the realistic differences betwen the two....besides the obvious extra grid? I remember the original Penta Company always claimed ~ 10% higher output with their PL-175 vs the 4-400A. Hallicra; /archives//html/Amps/1997-06/msg00177.html (6,870 bytes)
2. [AMPS] Tetrodes vs Pentodes (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 11 Jun 97 10:22:30 -0700; Pentodes have more headroom for the anode voltage to move around in than tetrodes, so that makes pentodes more efficient. For example, in a 5CX1500A, the anode V can move down to about 250v before n; /archives//html/Amps/1997-06/msg00185.html (8,361 bytes)

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