Bruce Griffiths wrote: >> I was only thinking that maybe there ought to be a buffer from the input >> to the rectifier, or else higher frequency energy will escape out >> towards the >> source. At least some isolation should be there. >> >> >> If one uses a common base stage to drive the diode frequency doubler transformer primary, then the high impedance drive minimises the effect of diode thresholds and mismatches, however it is necessary to connect a resistor in parallel with the shunt inductor in the diode doubler to provide a well defined relatively low load impedance at the 10MHz output frequency. Reverse isolation of 40dB or so is possible when using a common base stage at frequencies of around 10MHz or so.
Bruce _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
