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Audio and Video Talk
Valves / Vacuum Tubes
SCC88/PCC88 heaters in series?
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<blockquote data-quote="Moonraker" data-source="post: 1096374" data-attributes="member: 24248"><p>Voltage spec priority for E tubes, current for P tubes.</p><p></p><p>Why worry so much? </p><p></p><p>Maybe running production changes necessitated an increase in current (increase in wire thickness) to ensure a given cathode temperature at 6.3V. </p><p></p><p>No damage done if your power transformer can accommodate - and if you do not have this heater in series with a different one. </p><p>Hence the whole point : better to apply E tubes as they were intended. Parallel heaters...</p></blockquote><p></p>
[QUOTE="Moonraker, post: 1096374, member: 24248"] Voltage spec priority for E tubes, current for P tubes. Why worry so much? Maybe running production changes necessitated an increase in current (increase in wire thickness) to ensure a given cathode temperature at 6.3V. No damage done if your power transformer can accommodate - and if you do not have this heater in series with a different one. Hence the whole point : better to apply E tubes as they were intended. Parallel heaters... [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
SCC88/PCC88 heaters in series?
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