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1. [AMPS] AC on the plates??? (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Thu, 2 Nov 2000 09:58:28 -0800; For a distinctive cw sound, try putting ac directly on the plates of the 813's, similar to designs of the 30's. It saves having to install rectifiers and generally clears a path similar to Norm's gat; /archives//html/Amps/2000-11/msg00025.html (8,701 bytes)
2. [AMPS] AC on the plates??? (score: 1): Author: ccc@space.mit.edu (Chuck Counselman); Date: Thu, 2 Nov 2000 13:08:45 -0500; If you have single-phase AC service as I have, I suggest using two 813's back-to-back, each conducting on one-half cycle. The resulting 120-Hz note will sound smoother than a 60-Hz note. Hams with th; /archives//html/Amps/2000-11/msg00026.html (8,479 bytes)

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