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Old 8th October 2017, 10:54 AM   #1
JeffYoung is offline JeffYoung  Ireland
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Quasimodo results (ONLY)
Default Quasimodo results (ONLY)

This thread is for Quasimodo results ONLY.

Please NO COMMENTARY HERE. (For comments, please use the Simple, no-math transformer snubber using Quasimodo test-jig thread.)

[Note: it might be nice to highlight any non-standard Cx/Cs values in red.]

.

Last edited by JeffYoung; 8th October 2017 at 11:40 AM.
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Old 8th October 2017, 11:07 AM   #2
JeffYoung is offline JeffYoung  Ireland
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Block RKD 160/2X15

Cx 10nF
Cs 150nF
Rs 26Ω


[Data supplied by SGK, Simple, no-math transformer snubber using Quasimodo test-jig post #253]


Hammond 229C40

Cx 10nF
Cs 150nF
Rs 577Ω

[Data supplied by luvdunhill, post #527]


Hammond 160H12

Cx 10nF
Cs 150nF
Rs 11.5Ω

[Data supplied by luvdunhill, post #528]


Nuvotem 120VA, dual 15V secondaries

Cx 10nF
Cs 150nF
Rs 42.5Ω

Nuvotem 80VA, dual 15V secondaries

Cx 10nF
Cs 150nF
Rs 39Ω

Nuvotem 50VA, dual 15V secondaries

Cx 10nF
Cs 150nF
Rs 38.6Ω

[Data supplied by B&W_arthur, post #351]
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Old 8th October 2017, 11:27 AM   #3
JeffYoung is offline JeffYoung  Ireland
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Triad Magnetics VPT30-5330, dual 15V secondaries

Cx 10nF
Cs 150nF
Rs 22.6Ω

[Data supplied by Mark Johnson, Simple, no-math transformer snubber using Quasimodo test-jig post #255]


Antek 400VA, 18v

Cx 10nF
Cs 150nF
Rs 18.3Ω

[Data supplied by rickmcinnis, post #978]


R-Core 120VA, dual centre-tapped 18-0-18 secondaries

Cx 10nF
Cs 150nF
Rs 54Ω/54Ω, 69Ω/69Ω

[Data supplied by alexkosha, post #1219]
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Old 8th October 2017, 11:38 AM   #4
JeffYoung is offline JeffYoung  Ireland
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Edcor #XPWR274 (Torpedo and Torpedo III), 200V B+ and 6.3V filament

B+ Cx: 6.8nF
B+ Cs: 68nF
B+ Rs: 760Ω

filament Cx: 10nF
filament Cs: 150nF
filament Rs: 12Ω


Bottlehead PT-10 (SEX), 160V B+ and 6.3V filament

filament Cx: 10nF
filament Cs: 100nF
filament Rs: 9Ω

B+ Cx: 10nF
B+ Cs: 100nF
B+ Rs: 400Ω


Torroidy 300VA, 240V primary, dual 36V secondaries

Cx: 10nF
Cs: 150nF
Rs: 12Ω / 14Ω


Torroidy 500VA, 240V primary, dual 18V secondaries

Cx: 10nF
Cs: 150nF
Rs: 7Ω / 7Ω
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Old 8th October 2017, 03:01 PM   #5
EUVL is offline EUVL  Europe
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Talema 70064K 25VA 2x18V
Cx 10nF
Cs 150nF
Rs 12Ω

Talema 70061K 25VA 2x9V
Cx 10nF
Cs 150nF
Rs 7.8Ω

Talema 70043K 10VA 2x15V
Cx 10nF
Cs 150nF
Rs 12Ω
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Old 8th October 2017, 04:24 PM   #6
paulebappie is offline paulebappie  Netherlands
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R-Core Selectronic 30VA 2x9V
Cx 10nF
Cs 150nF
Rs 47Ω
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Old 8th October 2017, 07:59 PM   #7
fabrice63 is offline fabrice63  France
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Toroidal Selectronic 220 va 2 x 18 v

Cx 10 nf
Cs 150 nf
Rs 140 Ω

.
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Old 14th October 2017, 04:40 AM   #8
Mark Johnson is offline Mark Johnson  United States
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Theoretically it would be possible to write a software "bot" which uses the data contained within these posts, to calculate the transformer secondary's effective leakage inductance. Cx makes it both impossible, and irrelevant, to calculate the secondary's effective self capacitance.
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Old 16th October 2017, 02:08 AM   #9
KevinHeem is offline KevinHeem  United States
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Quote:
Originally Posted by JeffYoung View Post

Antek 400VA, 18v

Cx 10nF
Cs 150nF
Rs 18.3Ω
Jeff,
I've tested two Antek AS-4218, and one AN-4218 using the same Cx=10nf, and Cs=150nf. I'm coming up with a way different Rs values than you have posted, but consistent between the three transformers tested. How confident can we be that the values posted in this thread are accurate? I get what you're trying to do here, but I'm encouraging others to build their own Quasimodo/Cheapomodo and verify for themselves.
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Old 16th October 2017, 02:12 PM   #10
JeffYoung is offline JeffYoung  Ireland
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The reports are all attributed, so I guess it comes down to how much you trust the skill of the reporter.

But by all means build your own: I did.
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