Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Audio and Video Talk
Valves / Vacuum Tubes
Sansui 1000A Transformers on chassis
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support AVForums:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Ampdog" data-source="post: 763149" data-attributes="member: 144"><p>Man asketh leadin' questions ....</p><p></p><p>In-rush current to a large electrolytic cap: True, particularly regarding a filter input cap or the only cap. S.S. diodes in series with the transformer winding resistance should limit it; a rectifier valve hopefully heats up slow enough to avoid a short circuit effect.</p><p></p><p>PMPO as defined - but better pay no further attention to it. It was a pure 'foefie', misuded to the extent that your Quad IIs would probably have been classed as 200W PMPO amplifiers or some such. It has (had hopefully) no other purpose than to mislead the custoners. There is a lame kind of mathematical definition of it somewhere, total electrical tripe. (It is <strong>not</strong> instantaneous power.)</p><p></p><p>In basic electricity "watts r.m.s." is also a misnomer. All power is calculated from "r.m.s. <strong>volts</strong>", it is neither "r.m.s." nor "not r.m.s." It is a misnomer for continously available power etc. Going OT, I can furnish some basics if you want me to but an explanation should be available on the internet. It has to do with (real) instantaneous or short-term power, or continuously available power, as in over at least several tens of seconds and longer.</p></blockquote><p></p>
[QUOTE="Ampdog, post: 763149, member: 144"] Man asketh leadin' questions .... In-rush current to a large electrolytic cap: True, particularly regarding a filter input cap or the only cap. S.S. diodes in series with the transformer winding resistance should limit it; a rectifier valve hopefully heats up slow enough to avoid a short circuit effect. PMPO as defined - but better pay no further attention to it. It was a pure 'foefie', misuded to the extent that your Quad IIs would probably have been classed as 200W PMPO amplifiers or some such. It has (had hopefully) no other purpose than to mislead the custoners. There is a lame kind of mathematical definition of it somewhere, total electrical tripe. (It is [b]not[/b] instantaneous power.) In basic electricity "watts r.m.s." is also a misnomer. All power is calculated from "r.m.s. [b]volts[/b]", it is neither "r.m.s." nor "not r.m.s." It is a misnomer for continously available power etc. Going OT, I can furnish some basics if you want me to but an explanation should be available on the internet. It has to do with (real) instantaneous or short-term power, or continuously available power, as in over at least several tens of seconds and longer. [/QUOTE]
Insert quotes…
Verification
Post reply
Audio and Video Talk
Valves / Vacuum Tubes
Sansui 1000A Transformers on chassis
Top