wiwi
Junior Member level 2
plz take a look at the following link :
**broken link removed**
the last 3 lines in the first paragragh say :
"however the input signal levels at RF are tiny, typically 50uV appearing across the coil being amplified by Q2 and being about 5mV RF across the 2k2 load resistor ".
my question is a 5 mV signal is too low to forward bias the b-e junction of Q3 , so how would Q3 demodulate such a too low signal ? plz explain . thanks alot .
**broken link removed**
the last 3 lines in the first paragragh say :
"however the input signal levels at RF are tiny, typically 50uV appearing across the coil being amplified by Q2 and being about 5mV RF across the 2k2 load resistor ".
my question is a 5 mV signal is too low to forward bias the b-e junction of Q3 , so how would Q3 demodulate such a too low signal ? plz explain . thanks alot .