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
Having tube preamp Transformer wound questions
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: 946302" data-attributes="member: 144"><p>Fredeb,</p><p></p><p>Preliminary reply until I have more time: </p><p>A rather engineers' solution I have used more than once (though frowned upon by elitists and the old-wives-brigade): Depending on the requirements I have on several occasions used two low-voltage custom designed transformers back-to-back. Certainly economical using some of e.g. the Chinese transformers on offer these days. Having had as much experience in designing/building valve pre-amps as the next person, I fail to see why such an arrangement cannot give the same results as a custom-made power transformer, and one will have to have some funny requirements not to be able to apply such a topology. </p><p></p><p>Further just briefly, I also think these days valve rectification is out of fashion for any amplification, unless one has a burning desire for museum-appearance instruments (I have already stopped using that >40 years ago). The disadvantage of immediate application of h.t. is easily taken care of, etc.</p><p></p><p>This for now for other reaction - as promised further reaction from me later. ('Hitting-the-bed' now after having been night shift controller for our 24/7 neighbourhood watch or CPF.)</p></blockquote><p></p>
[QUOTE="Ampdog, post: 946302, member: 144"] Fredeb, Preliminary reply until I have more time: A rather engineers' solution I have used more than once (though frowned upon by elitists and the old-wives-brigade): Depending on the requirements I have on several occasions used two low-voltage custom designed transformers back-to-back. Certainly economical using some of e.g. the Chinese transformers on offer these days. Having had as much experience in designing/building valve pre-amps as the next person, I fail to see why such an arrangement cannot give the same results as a custom-made power transformer, and one will have to have some funny requirements not to be able to apply such a topology. Further just briefly, I also think these days valve rectification is out of fashion for any amplification, unless one has a burning desire for museum-appearance instruments (I have already stopped using that >40 years ago). The disadvantage of immediate application of h.t. is easily taken care of, etc. This for now for other reaction - as promised further reaction from me later. ('Hitting-the-bed' now after having been night shift controller for our 24/7 neighbourhood watch or CPF.) [/QUOTE]
Insert quotes…
Verification
Post reply
Audio and Video Talk
Valves / Vacuum Tubes
Having tube preamp Transformer wound questions
Top