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Filters - OpenRadioMiniconf
Building HF transmitter filters using air-cored coils, wound on a pencil. This is surprisingly effective!
to amateur coil electronics filter hf inductor lpf radio transmitter ...
on 14 March 2015
Espressif ESP8266 WiFi-serial interface : weekend die-shot : ZeptoBars
I really like the inductors -- old-fashioned pancake coils in miniature!
to chip coil die electronics inductor photography reverse-engineering ...
on 13 March 2015
by Adam Sampson.