Electronics > Beginners

NFC field generator

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Ammar:
Only 10W??

This would really get things going: https://au.mouser.com/pdfdocs/IXYS_PRF-1150.pdf

Really depends what the op is after. By distance do they mean a cm or like 10 m?

Ammar:

--- Quote from: PA0PBZ on December 16, 2019, 08:21:03 pm ---This should get you going: https://www.aliexpress.com/item/32959673490.html
Looks like they use an IRF530N

--- End quote ---

T3sl4co1l:
Switching times are limited by device capacitances alone -- RF amplifiers' bandwidth is subject to the same limit, but the center frequency is subject to more detailed characteristics (in this case, limited by the dropping gain / rising losses of the MOSFET with increasing frequency, and stray inductance affecting stability).

An oscillator with something like IRF530, at 13MHz, is pretty typical. :)  Get out some wire, some smaller capacitors, and you're good to go.  (Would recommend a Colpitts type.)

Tim

t1d:

--- Quote from: Ammar on December 16, 2019, 10:42:42 pm ---Only 10W??

This would really get things going: https://au.mouser.com/pdfdocs/IXYS_PRF-1150.pdf

Really depends what the op is after. By distance do they mean a cm or like 10 m?

--- End quote ---
Obsolete item. No stock. No price. Doh!

t1d:
I'm asking, here... Could a directional antenna be built?

If the airport scanner would make them blink, that could be fun...

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