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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+knock\s+a\s+3\-500z\s+short\s+loose\.\.\?\s*$/: 5 ]

Total 5 documents matching your query.

1. [AMPS] knock a 3-500z short loose..? (score: 1): Author: nospam4me@juno.com (nospam4me@juno.com); Date: Fri, 31 Dec 1999 10:57:02 -0800; I've got the source of much trouble here in my hand... a 3-500z with a cathode to grid short. Anyone care to suggest a method to possibly open the short. I won't trust the tube in an amplifier again,; /archives//html/Amps/1999-12/msg00433.html (7,691 bytes)
2. [AMPS] knock a 3-500z short loose..? (score: 1): Author: RFpower@radiodan.com (Radiodan W7RF); Date: Fri, 31 Dec 1999 11:18:06 -0800; Hi Skipp, My method is to provide a low voltage high current source (I have used 35+ amp power supplies or even a car battery) and put one lead on the grid and one on the filament. It will burn throu; /archives//html/Amps/1999-12/msg00435.html (9,929 bytes)
3. [AMPS] knock a 3-500z short loose..? (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Fri, 31 Dec 1999 16:14:46 EST; I have fixed that by discharging about a 1000 ufd cap charged to about 15-20 volts between the filament/grid. No promises! Mark WB8JKR -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submission; /archives//html/Amps/1999-12/msg00439.html (8,449 bytes)
4. [AMPS] knock a 3-500z short loose..? (score: 1): Author: w1nr@eecorp.com (Michael McCarthy, W1NR); Date: Fri, 31 Dec 1999 17:20:08 -0500; Let me add a few comments: Find the side of the filament with the lowest resistance reading to the grid. That will give you the most direct path. Keep the tube upright when applying power. A car batt; /archives//html/Amps/1999-12/msg00442.html (11,357 bytes)
5. [AMPS] knock a 3-500z short loose..? (score: 1): Author: measures@vcnet.com (measures); Date: Fri, 31 Dec 1999 14:29:38 -0700; The hat trick is to fix it so that the tube does not short when at normal operating temp. To do this, you need a tube that exhibits a cold g/f withstanding potential of 6 to 9 kV. To straighten bent; /archives//html/Amps/1999-12/msg00444.html (8,069 bytes)

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