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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: 5687 & OB2 as an excellent HT regulator posted by NAQTEN8 on February 25, 2015 at 09:02:14:
Putting a capacitor directly across a Zener diode, which shows a very low resistance when conducting, is not very efficient as a filter. A series resistor between the Zener and the capacitor improves the filtration dramatically (so long as the rest of the circuit allows the series resistance). Gas VR tubes have a maximum capacitance specification, typically 0.1 uF, above which they are liable to relaxation oscillation (cool flashing light, but otherwise useless).
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- RE: 5687 & OB2 as an excellent HT regulator - TimFox 14:25:04 02/25/15 (0)
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