https://30s1.tigerfire.ca/mediawiki/index.php?action=history&feed=atom&title=Primary_AC_Wiring
Primary AC Wiring - Revision history
2026-05-17T07:48:55Z
Revision history for this page on the wiki
MediaWiki 1.43.8
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=505&oldid=prev
Gordonp at 23:47, 13 August 2020
2020-08-13T23:47:16Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:47, 13 August 2020</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><b><u>AC Primary Connection Change Revealed</b></u></div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><b><u>AC Primary Connection Change Revealed</b></u></div></td>
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<td class="diff-marker" data-marker="−"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serves to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this transformer-induced cabinet hum, so I'll leave terminal 2 <del style="font-weight: bold; text-decoration: none;">disconnected</del> (which I believe is more-sound, electrically).</p></div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serves to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this transformer-induced cabinet hum, so I'll leave terminal 2 <ins style="font-weight: bold; text-decoration: none;">separate from 3&4</ins> (which I believe is more-sound, electrically).</p></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>PDF: [[Media:30S1_paper_figures06062020.pdf|Collins Bulletin 1015, July 30, 1965]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>PDF: [[Media:30S1_paper_figures06062020.pdf|Collins Bulletin 1015, July 30, 1965]]</div></td>
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Gordonp
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=504&oldid=prev
Gordonp at 22:11, 13 August 2020
2020-08-13T22:11:50Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:11, 13 August 2020</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><b><u>AC Primary Connection Change Revealed</b></u></div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><b><u>AC Primary Connection Change Revealed</b></u></div></td>
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<td class="diff-marker" data-marker="−"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 <del style="font-weight: bold; text-decoration: none;">serve</del> to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 <ins style="font-weight: bold; text-decoration: none;">serves</ins> to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this<ins style="font-weight: bold; text-decoration: none;"> transformer-induced</ins> cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>PDF: [[Media:30S1_paper_figures06062020.pdf|Collins Bulletin 1015, July 30, 1965]]</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>PDF: [[Media:30S1_paper_figures06062020.pdf|Collins Bulletin 1015, July 30, 1965]]</div></td>
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Gordonp
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=503&oldid=prev
Gordonp at 22:11, 13 August 2020
2020-08-13T22:11:10Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:11, 13 August 2020</td>
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<td colspan="2" class="diff-lineno">Line 32:</td>
<td colspan="2" class="diff-lineno">Line 32:</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
</tr>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>PDF:[[Media:30S1_paper_figures06062020.pdf|Collins Bulletin 1015, July 30, 1965]]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>PDF:<ins style="font-weight: bold; text-decoration: none;"> </ins>[[Media:30S1_paper_figures06062020.pdf|Collins Bulletin 1015, July 30, 1965]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Repair|Back to Repair]]</div></td>
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Gordonp
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=502&oldid=prev
Gordonp at 22:10, 13 August 2020
2020-08-13T22:10:48Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:10, 13 August 2020</td>
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<td colspan="2" class="diff-lineno">Line 32:</td>
<td colspan="2" class="diff-lineno">Line 32:</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
</tr>
<tr>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[<del style="font-weight: bold; text-decoration: none;">File</del>:30S1_paper_figures06062020.pdf|Collins Bulletin 1015, July 30, 1965]]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">PDF:</ins>[[<ins style="font-weight: bold; text-decoration: none;">Media</ins>:30S1_paper_figures06062020.pdf|Collins Bulletin 1015, July 30, 1965]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Repair|Back to Repair]]</div></td>
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Gordonp
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=501&oldid=prev
Gordonp at 22:09, 13 August 2020
2020-08-13T22:09:28Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:09, 13 August 2020</td>
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<td colspan="2" class="diff-lineno">Line 32:</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
</tr>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[File:30S1_paper_figures06062020.pdf|<del style="font-weight: bold; text-decoration: none;">500px|thumb|right</del>]]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[File:30S1_paper_figures06062020.pdf|<ins style="font-weight: bold; text-decoration: none;">Collins Bulletin 1015, July 30, 1965</ins>]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Repair|Back to Repair]]</div></td>
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Gordonp
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=500&oldid=prev
Gordonp at 22:07, 13 August 2020
2020-08-13T22:07:50Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:07, 13 August 2020</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Repair|Back to Repair]]</div></td>
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Gordonp
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=499&oldid=prev
Gordonp at 22:06, 13 August 2020
2020-08-13T22:06:50Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:06, 13 August 2020</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</p></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Repair|Back to Repair]]</div></td>
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Gordonp
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=498&oldid=prev
Gordonp at 22:04, 13 August 2020
2020-08-13T22:04:56Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:04, 13 August 2020</td>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><b><u>AC Primary Connection Change Revealed</b></u></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).</div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><p>This Collins Radio memo explains the rationale for the AC Primary Wiring Change, and my confusion: Jumpering 2 to 3&4 serve to reduce cabinet-hum, for some 30s-1 amplifiers. Mine doesn't appear to suffer from this cabinet hum, so I'll leave terminal 2 disconnected (which I believe is more-sound, electrically).<ins style="font-weight: bold; text-decoration: none;"></p></ins></div></td>
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Gordonp
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=497&oldid=prev
Gordonp at 22:04, 13 August 2020
2020-08-13T22:04:35Z
<p></p>
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Gordonp
https://30s1.tigerfire.ca/mediawiki/index.php?title=Primary_AC_Wiring&diff=490&oldid=prev
Gordonp at 18:12, 12 August 2020
2020-08-12T18:12:09Z
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