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DIY & Tutorials
DIY For Audio
Tetra phono amp kit, no powersupply help needed
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<blockquote data-quote="Steerpike" data-source="post: 684475" data-attributes="member: 807"><p>450V is probably excessive; for a typical triode circuit, B+ much above 210V is unusual. 350V caps should be OK, and they are easier to get than 450V.</p><p></p><p>A 100uF charged at full B+ can give you a really nasty shock! Be afraid.</p><p>AND if you charge them with the valves removed they will hold their charge for several days - so you pick up a board you think is cold, it having sat for 3 days since power up - and it bites!</p></blockquote><p></p>
[QUOTE="Steerpike, post: 684475, member: 807"] 450V is probably excessive; for a typical triode circuit, B+ much above 210V is unusual. 350V caps should be OK, and they are easier to get than 450V. A 100uF charged at full B+ can give you a really nasty shock! Be afraid. AND if you charge them with the valves removed they will hold their charge for several days - so you pick up a board you think is cold, it having sat for 3 days since power up - and it bites! [/QUOTE]
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DIY & Tutorials
DIY For Audio
Tetra phono amp kit, no powersupply help needed
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