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Audio and Video Talk
Valves / Vacuum Tubes
Having tube preamp Transformer wound questions
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<blockquote data-quote="Family_Dog" data-source="post: 946280" data-attributes="member: 82"><p>If using only for a pre then my specs above may be halved in respect of amperage. You could save some money by only having one 6.3v winding instead of two and dump the centre-tap but total amperage rating would depend on the type and quantity of valves used. Such data is easily obtained online. The HT winding could also be lower, 300v is probably an overkill for a pre, anywhere between 200 & 250v at 100 - 150mA should suffice. All depends on what you actually want to do, and whether using a valve rectifier or solid-state rectification. SS is cheaper, valve looks better and is more gentle to the electronics <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>-F_D</p></blockquote><p></p>
[QUOTE="Family_Dog, post: 946280, member: 82"] If using only for a pre then my specs above may be halved in respect of amperage. You could save some money by only having one 6.3v winding instead of two and dump the centre-tap but total amperage rating would depend on the type and quantity of valves used. Such data is easily obtained online. The HT winding could also be lower, 300v is probably an overkill for a pre, anywhere between 200 & 250v at 100 - 150mA should suffice. All depends on what you actually want to do, and whether using a valve rectifier or solid-state rectification. SS is cheaper, valve looks better and is more gentle to the electronics :) -F_D [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Having tube preamp Transformer wound questions
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