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Audio and Video Talk
Valves / Vacuum Tubes
Simple PP circuit using KT88s
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<blockquote data-quote="Den123" data-source="post: 966967" data-attributes="member: 13454"><p>Good Afternoon Mr Dog.</p><p>Thank you for your interest and for sharing.</p><p>My comments:</p><p>Items 1,3&5, totally agree.</p><p>Item 2: I'm not that knowledgeable in this regard - I'll take your word.</p><p>Item 4: Totally agree. I have worked on 10GHz circuits that don't need to resort to this.</p><p>Non-pol motor starting caps? Yeah, I see it, but I have no problem with Electrolytics. I have 1000uF 400V caps in stock. Two in series will be fine. I also use 220k split-balance resistors. I will try the "e-choke" one day. When I have the power transformers wound, I may compensate for the loss by winding slightly higher taps (Eg 350 and 360V) to compensate for the drop, to be implemented if and when.</p><p>That amp Sy liked, the Williamson KT88 look-alike - would you recommend it? I read the long thread. There seems to be great concern regarding stability and oscillations. Also, the gain/sensitivity seems quite low, but that can be dealt with elsewhere. I will pose a diagram of an amp called the "HK-10" and would love your comments on this.</p><p>Thank you again.</p></blockquote><p></p>
[QUOTE="Den123, post: 966967, member: 13454"] Good Afternoon Mr Dog. Thank you for your interest and for sharing. My comments: Items 1,3&5, totally agree. Item 2: I'm not that knowledgeable in this regard - I'll take your word. Item 4: Totally agree. I have worked on 10GHz circuits that don't need to resort to this. Non-pol motor starting caps? Yeah, I see it, but I have no problem with Electrolytics. I have 1000uF 400V caps in stock. Two in series will be fine. I also use 220k split-balance resistors. I will try the "e-choke" one day. When I have the power transformers wound, I may compensate for the loss by winding slightly higher taps (Eg 350 and 360V) to compensate for the drop, to be implemented if and when. That amp Sy liked, the Williamson KT88 look-alike - would you recommend it? I read the long thread. There seems to be great concern regarding stability and oscillations. Also, the gain/sensitivity seems quite low, but that can be dealt with elsewhere. I will pose a diagram of an amp called the "HK-10" and would love your comments on this. Thank you again. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Simple PP circuit using KT88s
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