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Reviews (85)
29 Nov, 2017
Excellent small radial inductor
Excellent small radial inductor (both leads out of the bottom).
Resistance only 1.9 ohms,
Size 8 x 5mm.
Parallel resonant freq. about 3.1MHz.
Q in the region of 600 around this freq..
Use as RF choke in DC psu, RF amplifier, or filter inductor, etc. etc...
17 Jul, 2017
Good quality but rather slow
Tests and works OK but not fast. Pay a little more if you want to write and read a lot of data.
25 Mar, 2020
Very good.
Very good. Definitely much better than my previous cheap headband that kept on slipping down my head with awkward adjustment and poor lenses. There is a selection of 5 lenses from x1 to x3.5 and two slots in the top lens carrier so they can be combined to give a magnification up to x6, and they seem to be good quality plastic giving a sharp enough image for the magnification.
The only criticism is the light direction. It always seems a little high for optimum work - particularly for close work when using the higher magnifications.