there is still a lot of necessary system level info that could be useful - is there air clearance requirement or just 30KV isolation - transformers can be built with high isolation
is the connection rigid or have to permit relative motion? - how much - # axis, degrees of freedom, motion range - magnetic coupling with rotorary cores?
motion while operating or just for assembly?
is there max electrical impedance - bigger C with smaller separation across a good dielectric?
limited area for the interface? - 30 uW could be provided with lamp/LEDs shining on a stack of solar cells but 1 cm^2 could be a little hot on the source side [edit; acutually no too bad - less than 1 W into IR LED array matched to Si photovoltaiacs should do fine]
how much bandwidth does the information channel require - what reliability/dropout rate? bidirectiona/full duplex?
is the connection rigid or have to permit relative motion? - how much - # axis, degrees of freedom, motion range - magnetic coupling with rotorary cores?
motion while operating or just for assembly?
is there max electrical impedance - bigger C with smaller separation across a good dielectric?
limited area for the interface? - 30 uW could be provided with lamp/LEDs shining on a stack of solar cells but 1 cm^2 could be a little hot on the source side [edit; acutually no too bad - less than 1 W into IR LED array matched to Si photovoltaiacs should do fine]
how much bandwidth does the information channel require - what reliability/dropout rate? bidirectiona/full duplex?
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I take it the purpose is to transmit a small amount of power accross a 1cm gap, The object being to power some device.
This looks like RFID
I missed the referance to 13.56mhz - RFID territory it is, Hmm the usual mini arial provides enough power for active tags from a local (close transmitter) why go for capacitive coupling. the tags seem to work unless encased in tin foil to keep readers out of passports
would a capactive reader work through tin foil?
This looks like RFID
I missed the referance to 13.56mhz - RFID territory it is, Hmm the usual mini arial provides enough power for active tags from a local (close transmitter) why go for capacitive coupling. the tags seem to work unless encased in tin foil to keep readers out of passports would a capactive reader work through tin foil? - Status
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