plate load OPT vs Circlotron load OPT

Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

Folk,

I have found an post in AA quoting:

"To decide how a tube operates you need to identify the ground reference for the input signal. In an ordinary common cathode amp the cathode is grounded. In a cathode follower the plate is at AC ground (B+.) In the Circlotron the reference is the grounded center tap of the output transformer. So is it common cathode or cathode follower?"

With my limited knowledge the Cicrlotron is similar to cathode follower in which I always find the typical CF having mid-range compression sonic signature, I always try to avoid having it

It happens that I have just found out that my BAT VK75se in fact is Circlotron structure. I enclose the topology diagram found in Mr. Turner website. Can someone describe if the aforementioned description indicate whether the Circlotron being the plate load or cathode?

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Topic - plate load OPT vs Circlotron load OPT - Eric Chan 23:47:59 02/11/17 (3)

RE: Circlotron Cathode Follower - 6AS7_6SN7 01:05:48 02/12/17 (2)

RE: Circlotron Cathode Follower - Eric Chan 01:29:29 02/12/17 (1)

RE: Circlotron Cathode Follower - 6AS7_6SN7 01:41:13 02/12/17 (0)

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