welp ... learned another thing about PC lights
I know anything that uses electricty radiates it in some manner and to some degree, but ionized plasma probably is one of the better radiators
I had my 96 watters over my 29 gal today, taking some pictures ... for a reflector I used a sheet of aluminum foil, which was just laying over most of the two bulbs (but not covering either end)
I was feeding my fish through a space between the aluminum and the edge of the tank, and brushed the aluminum with my thumb ... WOWZERS got a nice poke
timidly touching the aluminum with my whole hand, I felt only a slight tingle ...
this would seem to indicate the presence of either RF energy or high frequency ac voltage, since the amount of contact is inverse to the sensation felt
so I get out my old voltmeter, and measure 140 volts to ground on the sheet of aluminum ... this voltage must have gotten there somehow, either from electromagnetic induction (from the ac field in the plasma), or the aluminum is acting as an RF radiator and absorbing rf from the bulbs
I have a 60 mHz oscope at the shop, I'll have to bring it in and check to see if it's AC or RF ... voltage seems too high to be rf, so my guess is ac
I also measured 35 volts to ground from the tank itself
I don't have an ammeter, but my guess is there is very little if any current, since I obvisouly didn't get electrocuted ... time to ground my aluminum foil
any thoughts?
I know anything that uses electricty radiates it in some manner and to some degree, but ionized plasma probably is one of the better radiators
I had my 96 watters over my 29 gal today, taking some pictures ... for a reflector I used a sheet of aluminum foil, which was just laying over most of the two bulbs (but not covering either end)
I was feeding my fish through a space between the aluminum and the edge of the tank, and brushed the aluminum with my thumb ... WOWZERS got a nice poke
timidly touching the aluminum with my whole hand, I felt only a slight tingle ...
this would seem to indicate the presence of either RF energy or high frequency ac voltage, since the amount of contact is inverse to the sensation felt
so I get out my old voltmeter, and measure 140 volts to ground on the sheet of aluminum ... this voltage must have gotten there somehow, either from electromagnetic induction (from the ac field in the plasma), or the aluminum is acting as an RF radiator and absorbing rf from the bulbs
I have a 60 mHz oscope at the shop, I'll have to bring it in and check to see if it's AC or RF ... voltage seems too high to be rf, so my guess is ac
I also measured 35 volts to ground from the tank itself
I don't have an ammeter, but my guess is there is very little if any current, since I obvisouly didn't get electrocuted ... time to ground my aluminum foil
any thoughts?