I've been looking at some diy radio tutorials, and I'm curious about why they all suggest hand-winding your own huge inductor. Wouldn't a smaller inductor from radioshack work just as well?
Small inductors will give you large ripple voltages, which will affect the signal.
Large inductors are expensive.
>>7962178
What causes the ripple?
>>7962265
The small induction.
>>7962265
muh dick
>>7962161
Shouldn't there be some kind of detector in OP's image, like a diode at least? That thing looks like it'd put out garbled modulated signal.
>>7962276
Diodes are for queers.
>>7962265
Has nothing to do with ripple (not a low pass filter), it's about loss of energy in the coil. Larger coils have a higher Q (quality) factor. Do you still have AM stations and the necessary space for a long wire antenna? There are many tutorials on the net, look for crystal radio.
Well, in the pic, your inductor has a sliding tap, it might be cheaper to make your own sliding tap inductor than to buy one.
