Supercapacitors - Possible anti-surge device to protect filaments/ heaters
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I have been reading about them for electric vehicles (boost and regen braking etc.) so I thought of using them to take the switch-on surge and divert the surge from the filaments.
You would need a high current silicon rectifier, but check that spec for surge current.
I have not put this through tests yet, to montoir the current profile over time to the filaments - just an idea at this stage.
They have a 2.7 volt rating, so 3 in series (8.1V) at 3F each gives you a very small 1F (one Farad) capacitor at 8.1V.?
I bought a 1F 16V electrolytic from a car audio (boom boom) shop for ?10 several years ago. ? I also put a 0.5 ohm resistor in series to limit the current. ? I thought it would stiffen my PS7, but the PS7 was plenty stiff enough.
Nigel Patterson
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