In Reply to: How do you represent your tubes in PSUD2? posted by DAK on May 28, 2017 at 12:24:13:
Set the current tap to the idle current draw of the circuit.There is no way to test for power supply impedance in PSUD2.
You can do a stepped response (stepped load) with the current tap.
That will tell you 2 things,
1. if the supply filter will ring.
2. the DCR of the PS, but it will not tell you the impedance.
If the supply is feeding a Class A circuit then the average current draw over time (the longest time being the length of the lowest frequency in the music) will be equal to the idle current draw (assuming linear tubes).
If the final cap is large enough then the voltage should be largely sustained through the cycle even at the lowest frequency of interest.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Edits: 05/28/17
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Follow Ups
- RE: How do you represent your tubes in PSUD2? - Tre' 16:36:29 05/28/17 (11)
- what do you look for in the graphs? - DAK 18:17:44 05/28/17 (10)
- RE: what do you look for in the graphs? - Tre' 19:29:14 05/28/17 (9)
- RE: what do you look for in the graphs? - PakProtector 03:53:32 05/29/17 (5)
- RE: what do you look for in the graphs? - Triode_Kingdom 12:32:22 05/29/17 (4)
- RE: what do you look for in the graphs? - cpotl 07:36:15 05/30/17 (0)
- RE: what do you look for in the graphs? - cpotl 02:04:52 05/30/17 (1)
- RE: What i like is it give a good approximation of voltages - DAK 11:52:15 05/30/17 (0)
- RE: what do you look for in the graphs? - PakProtector 14:46:24 05/29/17 (0)
- Please see edits to my post above. (nt) - Tre' 21:01:01 05/28/17 (2)
- RE: Thank you for that info. - DAK 22:32:50 05/28/17 (1)
- RE: Thank you for that info. - Tre' 07:50:04 05/29/17 (0)