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DIY & Tutorials
DIY For Audio
Old Suitcase Turntable Amp Rescue
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<blockquote data-quote="marantz123" data-source="post: 1064063" data-attributes="member: 16849"><p>The reason for the resistors in the plate supply is to prevent exceeding the max instantaneous 1Amp plate current (per plate). According to the Sylvania rating charts, this is a function of supply voltage vs resistance with a boundary condition of 1 Amp of current. (Read points 1-3 on page 2 and look at rating chart three) Whether this is a risk due to a larger first capacitor or hot-switching is irrelevant...both are valid reasons. IMO (according to the datasheet), hot-switching is more the primary concern especially if running a first capacitor larger than the recommended 10uF. With a highly portable device, hot switching is a real possibility.</p></blockquote><p></p>
[QUOTE="marantz123, post: 1064063, member: 16849"] The reason for the resistors in the plate supply is to prevent exceeding the max instantaneous 1Amp plate current (per plate). According to the Sylvania rating charts, this is a function of supply voltage vs resistance with a boundary condition of 1 Amp of current. (Read points 1-3 on page 2 and look at rating chart three) Whether this is a risk due to a larger first capacitor or hot-switching is irrelevant...both are valid reasons. IMO (according to the datasheet), hot-switching is more the primary concern especially if running a first capacitor larger than the recommended 10uF. With a highly portable device, hot switching is a real possibility. [/QUOTE]
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DIY & Tutorials
DIY For Audio
Old Suitcase Turntable Amp Rescue
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