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Model:
PCF-150 ==> 1.50" dia. power cooler
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Fits
the following types: 6550, 6L6, 5881, EL509/19, 6LF6, etc.
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Working
Clearances
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Convective
Cooling - Normal Operation
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| Equipment: |
Test rig |
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Power - Fil: |
10.0 W |
| Serial No: |
N/A |
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Power - Anode: |
50 W |
| Tube type: |
KT-90A |
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Power - Total: |
60 W |
| Mfg. by: |
Ei - Yugoslavia |
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Cooler type: |
PCF-150 power |
| Bulb dia.: |
1.50" |
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Cooler height: |
2.62" |
| Bulb area:: |
14.6 sq. in. |
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Cooler area: |
102 sq. in. |
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| Notes: |
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| While the picture above shows an EL-509,
the original work was done using KT-90s at the time when we were consulting to VTL
in the USA on the final revisions to the screen grid/anode spacing and dimensioning,
a very important parameter in a beam tetrode. |
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Forced
Air, Fan Cooling - Custom Operation
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| Equipment: |
Test rig |
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Power - Fil: |
10 W |
| Serial No: |
N/A |
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Power - Anode: |
See notes |
| Tube type: |
KT-90A |
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Power - Total: |
See notes |
| Mfg. by: |
Ei - Yugoslavia |
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Cooler type: |
PCF-150 power |
| Bulb dia.: |
1.50" |
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Cooler height: |
2.62" |
| Bulb area:: |
14.6 sq. in. |
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Cooler area: |
102 sq. in. |
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| Notes: |
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The KT-90A is shown operating at two
anode dissipations. The broken curves show bulb temperatures at 30W total dissipation
while the solid curves show bulb temperatures at 60W total dissipation.
PEARL SC150 cooling system test rig. Air flow = 50 ft/min. through 2.5" ID clear
acrylic plastic chimney. |
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