Revision as of 17:10, 28 July 2024 edit Chetvorno (talk \| contribs) Extended confirmed users 66,715 edits →Digital circuits: Clarified description of operation a little ← Previous edit		Latest revision as of 00:25, 16 August 2025 edit undo 98.38.82.170 (talk) No edit summary Tags: Mobile edit Mobile web edit
Line 83: The transformer-less circuit with two tetrode tubes dates back to 1933: "THE USE OF A VACUUM TUBE AS A PLATE-FEED IMPEDANCE." by J.W.Horton in the Journal of the Franklin Institute 1933 volume 216 Issue 6 The '''White Cathode Follower''' (Patent 2,358,428, Sep. 1944 by E. L. C. White) is similar to the SEPP design above, but the signal input is to the ''top'' tube, acting as a cathode follower, but one where the bottom tube (in common cathode configuration) ifis fed (usually via a step-up transformer) from the current in the plate (anode) of the top device. It essentially reverses the roles of the two devices in SEPP. The bottom tube acts part way between a constant current sink and an equal partner in the push–pull workload. Again, the drive to each tube therefore might not be equal. Transistor versions of the SEPP and White follower do exist, but are rare.

Push–pull output: Difference between revisions