Mail Archive Search: <+from:willy@global2000.net>

Results:

References: [ +from:willy@global2000.net: 11 ]

Total 11 documents matching your query.

1. [Amps] Thunderbolt questions (score: 1): Author: willy@global2000.net (Bill Russell); Date: Sun, 07 Apr 2002 08:09:14 -0400; I have a Johnson Thunderbolt hf amp and need to replace the doorknob caps in the output stage. It uses 2 500 mmf at 20kv in parallel. Can I use 2 640mmf as replacements without causing problems. The; /archives//html/Amps/2002-04/msg00222.html (6,590 bytes)
2. [Amps] Loading Caps needed (score: 1): Author: willy@global2000.net (Bill Russell); Date: Mon, 15 Apr 2002 18:55:22 -0400; My Valiant uses a multi section silver mica cap for loading. They all do.......not just mine!!! I have to replace the dadgum thing and I am going to replace it with 4 individual caps. The values are; /archives//html/Amps/2002-04/msg00370.html (6,844 bytes)
3. [Amps] equalizing resistors (score: 1): Author: willy@global2000.net (Bill Russell); Date: Fri, 01 Mar 2002 05:24:44 -0500; I am replacing the filter cap in the hv section of my Thunderbolt. I will be using 2 caps in series. The power supply filter is the choke input type using a swinging choke. It supplies 2200 volts. Do; /archives//html/Amps/2002-03/msg00006.html (6,686 bytes)
4. [Amps] Equalizing Restistors (score: 1): Author: willy@global2000.net (Bill Russell); Date: Sat, 02 Mar 2002 11:10:43 -0500; Thanks for the replies folks. I should have figured the power rating of the resistors myself......i use ohms law, must have been a "senior moment"!!! As for the swinging choke input filter, Im stuck; /archives//html/Amps/2002-03/msg00014.html (7,367 bytes)
5. [Amps] Equalizing Restistors (score: 1): Author: willy@global2000.net (Bill Russell); Date: Sat, 02 Mar 2002 18:59:58 -0500; Richard, If I understand you, I can remove the swinging choke leaving just the 25mfd cap as the hv filter. If the high voltage then rises to about 3kv instead of the normal 2.2 kv, I would have to ch; /archives//html/Amps/2002-03/msg00022.html (9,139 bytes)
6. [Amps] Equalizing resistors (score: 1): Author: willy@global2000.net (Bill Russell); Date: Sat, 02 Mar 2002 20:00:27 -0500; This is the second time I tried posting this message. Richard, If I understand you, I can remove the swinging choke leaving just the 25mfd cap as the hv filter. If the high voltage then rises to abou; /archives//html/Amps/2002-03/msg00023.html (7,131 bytes)
7. [Amps] Equalizing Restistors (score: 1): Author: willy@global2000.net (Bill Russell); Date: Sun, 03 Mar 2002 12:10:05 -0500; Just a note about the HV power transformer in the thunderbolt. It is 4800V center tapped at about 500 mills. I have the solid state replacement for the HV rectifiers. Bill KC2IFR Bill Russell; /archives//html/Amps/2002-03/msg00026.html (13,508 bytes)
8. [Amps] Terminology Question (score: 1): Author: willy@global2000.net (Bill Russell); Date: Wed, 20 Mar 2002 21:12:24 -0500; When radios used batteries for power, the high voltage battery was called the "B" battery. Hense the term B+. I think the "A" battery was for filament power and the "C" battery was for bias voltages.; /archives//html/Amps/2002-03/msg00448.html (8,562 bytes)
9. [AMPS] Thunderbolt questions (score: 1): Author: willy@global2000.net (Bill Russell); Date: Tue, 06 Nov 2001 06:28:18 -0500; This is my first post to this group and I hope it works! I have a Johnson T'bolt, the hf version and have a few questions. Have not powered it up as yet as it needs a little work. Nothing serious I h; /archives//html/Amps/2001-11/msg00066.html (8,491 bytes)
10. [AMPS] More t'bolt questions (score: 1): Author: willy@global2000.net (Bill Russell); Date: Tue, 06 Nov 2001 20:39:16 -0500; Many thanks for the relays to my first post. A couple of points I left out. The t'bolt is tuned qrid input with one exception. It has a RES input position which is used for any exciter that will load; /archives//html/Amps/2001-11/msg00105.html (9,492 bytes)
11. [AMPS] More T'bolt stuff (score: 1): Author: willy@global2000.net (Bill Russell); Date: Sun, 11 Nov 2001 19:06:31 -0500; Again thanks to all for their help and opinions about my questions. After reading all of your info, I have decided to stick with the power supply as designed except to replace the original 8mfd oil w; /archives//html/Amps/2001-11/msg00174.html (8,323 bytes)

Current List: 1 - 11
Page: [1]