sonda w.cz do V640 |
UHF i mikrofale: http://www.mikrofale.iq24.pl/default.asp?grupa=160341&temat=112019 na kf jest prościej: http://www.sp5jnw.sem.pl/technika/pommocyhtm/pommoc.pdf Germanowe kontra Schottky: http://www.cliftonlaboratories.com/diodes_for_rf_probes.htm "In any particular operation, the sensitivity differences amongst these three diode types may or may not be important. Operated into a sensitive digital voltmeter, all three diode types would likely be usable. Operating into a 50 microampere moving coil meter, when measuring lower level signals, in contrast, a germanium diode may be the only usable alternative. If I were designing a diode-based wattmeter, however, intended for reasonably power levels and voltages, where flat frequency response is essential, a Schottky diode is the best choice." ciekawe porównanie http://www.bentongue.com/xtalset/27MeaXSD/27MeaXSD.html |