|
It puts a small capacitance, typically 100 pf or so, between cathode and plate of the damper, to increase sweep width. Old techies used to do this, starting with 68pf, 82, 100, or 120pf. But with each step up, the HV drops proportionately. So there's "no free lunch". Above 120pf, the HV loss is too much.
The caps used were disc ceramic, 4KV rated for BW sets, 6KV for color.
[EDIT.] Hor output cathode current also drops proportionately with each step up, contributing to "no free lunch".
Last edited by old_coot88; 03-09-2024 at 08:47 AM.
|
03-09-2024, 08:41 AM
Threaded Mode