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Total 9 documents matching your query.

1. [AMPS] 3-500z going dead? (score: 1): Author: kpevin@mediaone.net (Kevin Polchan); Date: Sun, 20 Feb 2000 12:16:15 -0600; Hi All, I have a little Henry 1KD5 (single 3-500z) amp and I think the tube is going dead. I dont have a lot of experience with 3-500Zs so bear with me here.. The tube has a 1982 date code so its an; /archives//html/Amps/2000-02/msg00396.html (8,434 bytes)
2. [AMPS] 3-500z going dead? (score: 1): Author: kpevin@mediaone.net (Kevin Polchan); Date: Sun, 20 Feb 2000 13:17:10 -0600; Hi Rich, When I first bought the amp you were nice enough to send me a schematic for it and I did check the filament voltage at that time - it was 4.97 volts with no load on 230VAC. I just checked ag; /archives//html/Amps/2000-02/msg00398.html (8,735 bytes)
3. [AMPS] 3-500z going dead? (score: 1): Author: measures@vcnet.com (measures); Date: Sun, 20 Feb 2000 11:03:59 -0700; going Emissive life = (e1/e2)^23.4. The stock filament potential in the 1kd5 is approx. 5.8V. This reduces emissive life by approx 98.7%. . 4.8V on the filament is agout right. . . ... good luck, Ke; /archives//html/Amps/2000-02/msg00399.html (7,728 bytes)
4. [AMPS] 3-500z going dead? (score: 1): Author: measures@vcnet.com (measures); Date: Sun, 20 Feb 2000 11:52:34 -0700; volts. amazing. perhaps someone already lowered it. yes. a I have an 8163/3-400Z that was mfg in 1967 and it still gives full output. The best way to test emission is to temporarily increase filamen; /archives//html/Amps/2000-02/msg00400.html (9,765 bytes)
5. [AMPS] 3-500z going dead? (score: 1): Author: phil@vaxxine.com (Phil T. (VA3UX)); Date: Sun, 20 Feb 2000 21:42:52 -0500; Kevin, the same symptoms would occur if a component in the input matching network(s) was failing. I don't know the 1K5D so I don't know what is in it. But failing input components that change value w; /archives//html/Amps/2000-02/msg00403.html (9,756 bytes)
6. [AMPS] 3-500z going dead? (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Mon, 21 Feb 2000 11:06:43 -0000; it >>could be dying a normal death, hi hi. I have a 6L6G mfd in 1935, and it still has full output. But in Kevin's case, it could well be the tube is dying. Rich's idea will show if the emission is g; /archives//html/Amps/2000-02/msg00413.html (8,820 bytes)
7. [AMPS] 3-500z going dead? (score: 1): Author: kpevin@mediaone.net (Kevin Polchan); Date: Mon, 21 Feb 2000 09:40:13 -0600; Hi Pete, I'll pick up a new tube then I'll play with the bringing the old one back to life :-) On another note I borrowed another VOM to make sure the filament voltage wasnt too high. The brand new f; /archives//html/Amps/2000-02/msg00417.html (10,472 bytes)
8. [AMPS] 3-500z going dead? (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Mon, 21 Feb 2000 15:57:18 -0000; 4.5-4.6 4.9-5.0 same >voltage (117.5) so whats up with that? Dunno! But is the AC neutral tied to ground at all in the amp? If so, it's possible that you could have equal line to neutral voltages, bu; /archives//html/Amps/2000-02/msg00418.html (8,588 bytes)
9. [AMPS] 3-500z going dead? (score: 1): Author: kpevin@mediaone.net (Kevin Polchan); Date: Mon, 21 Feb 2000 10:33:24 -0600; hi Pete, Well now things are getting interesting. The 220 outlet has the white (nuetral) lead on the ground pin and a red and white on the other two. i remember reading someplace that the neutral sho; /archives//html/Amps/2000-02/msg00420.html (10,707 bytes)

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