Note that the cathode to cathode winding "center tap" is grounded and anode to anode winding "center tap" is fed from B+.
Edit: see schematic of similar MC240. Mike measured from "yel to yel/wht" and from "blu to blu/wht".
99.102.231.25
This Post Has Been Edited by the Author
In Reply to: RE: Can you elaborate on how you arrive at the 9,600 ohm figure?.. posted by Tre' on August 31, 2013 at 19:25:17
...while the bifilar wound unity coupled scheme utilizes four separate physical primary windings, schematically they're drawn as two center tapped primary windings: cathode to cathode and anode to anode. IOW there are two 600 ohm composite windings, each built up from two physical windings of 150 ohms each. What Mike measured @ 600 ohms was the value of two physical windings in series: From cathode to cathode Mike measured ~ 600 ohms and from anode to anode he also measured ~ 600 ohms. So ... There are either 4 x 150 ohm primary windings or 2 x 600 primary windings depending on how you choose to look at the situation. Mike measured from the 2 x 600 ohm perspective and I'm in agreement with his numbers. From this I arrive at the 2,400 ohm figure for the equivalent, single end to end primary impedance.Note that the cathode to cathode winding "center tap" is grounded and anode to anode winding "center tap" is fed from B+.
Edit: see schematic of similar MC240. Mike measured from "yel to yel/wht" and from "blu to blu/wht".
Edits: 08/31/13 08/31/13Follow Ups:
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