gastonanthony
New Member
hey, we have that book in the school library, I'll check it out tomorrow, thanks ![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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get yourself a copy of The ARRL Handbook
solidhelix said:OT:i try to charged an INDUCTOR (air core) with a 9Vdc and try to remove the 9Vdc source, this will generate a huge amount of voltage right? When i try to hold the terminals of the inductor i feel nothing...
The inductor's values is around 600uH based on the air core computation posted here...If the inductor will generate huge amounts of voltage i will something, right :?:
Nigel Goodwin said:solidhelix said:OT:i try to charged an INDUCTOR (air core) with a 9Vdc and try to remove the 9Vdc source, this will generate a huge amount of voltage right? When i try to hold the terminals of the inductor i feel nothing...
The inductor's values is around 600uH based on the air core computation posted here...If the inductor will generate huge amounts of voltage i will something, right :?:
It's rather a low inductance value, and presumably has a REALLY low DC resistance - I suspect it will short the battery out to the extent there will be hardly any voltage across it.
Try using a MUCH higher inductance, with a MUCH higher DC resistance.
A 1mH RF choke and a 6V battery easily light a neon bulb!.
solidhelix said:You are saying that i should use a higher inductance value? presumbably 1mh?
gastonanthony said:I think what he needs is a capacitor, or capacitor banks to store the charge and discharge it at a higher voltage level. Try a transformer, hold the 220 V and ground side with one hand and then on the other side, connect and disconnect the 9V battery, that would make you feel more than just something![]()
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Nigel Goodwin said:I'm presuming you're just playing with a coil and a battery?, and not trying to make a switchmode PSU?.
solidhelix said:I think using a transformer will send me to the graveyard![]()
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williB said:just a little side note on the Topic ..
i took apart a ferrite core inductor recently..
and i found that they had made the main wire out of a bunch of little strands and wrapped them with silk for insulation..
it was a pretty smart way to do it..because with just one wire i am sure they would have needed many more turns to get the same inductance ..
but by breaking the wire into smaller strands i am sure the electromagnetic effects were increased..