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
Vinyl
rectifiers and their heaters....help please
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="handsome" data-source="post: 50916" data-attributes="member: 772"><p>i have a psu using svetlana 6D22S rectifiers in a graetz-bridge arrangement feeding a choke input supply. (6D22S is a single indirectly heated TV damper diode with a cathode top cap) transformer is 500V output after input choke is 460V. the 6D22S have a separate 12V non-centre tapped filament transformer that is floating. the heaters are connected in series. circuit current draw is approximately 70mA the tubes are rated at 300mA continuous. I had a problem with the solid state diodes regularly blowing on one 'leg'. eventually the problem was traced to a 6D22S that was arcing. i replaced the tube and all seems well so far but i worry. the 6D22S is apparently a very robust tube but i wonder if not having the heater connected to the cathode was part of the problem. i would like to connect the cathodes to the heaters. how do i do this with a non-CT heater transformer and a series heater connection?</p></blockquote><p></p>
[QUOTE="handsome, post: 50916, member: 772"] i have a psu using svetlana 6D22S rectifiers in a graetz-bridge arrangement feeding a choke input supply. (6D22S is a single indirectly heated TV damper diode with a cathode top cap) transformer is 500V output after input choke is 460V. the 6D22S have a separate 12V non-centre tapped filament transformer that is floating. the heaters are connected in series. circuit current draw is approximately 70mA the tubes are rated at 300mA continuous. I had a problem with the solid state diodes regularly blowing on one 'leg'. eventually the problem was traced to a 6D22S that was arcing. i replaced the tube and all seems well so far but i worry. the 6D22S is apparently a very robust tube but i wonder if not having the heater connected to the cathode was part of the problem. i would like to connect the cathodes to the heaters. how do i do this with a non-CT heater transformer and a series heater connection? [/QUOTE]
Insert quotes…
Verification
Post reply
Audio and Video Talk
Vinyl
rectifiers and their heaters....help please
Top