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John Smith wrote:
flashdrive wrote: ... Has anyone ever successfully reverse engineered the pre-amp of a Wellbrook loop? It might be possible to dissolve the encapsulating material (epoxy?) to reveal the PCB and componants. Otherwise a medical scanner (seriously) might reveal some useful information. My question would be, "Why go to the trouble?" Indeed, grab a DC - 1Ghz MMIC device (make sure you don't get an SMC component, unless you like soldering under a microscope), stick a proper filter for the freqs/bands in front of it, and feed its' input with a well designed loop ... if you need EXTREME gain, you can cascade a couple of MMICs. Regards, JS I do SMD rework occasionally, with MagEyes. You'd use a power amplifier for a pre-amp? |
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