Germanium, rectifier
Silicon, rectifier
Germanium, signal detector
Silicon, signal detector
Avalanche effect
Hall effect
Breakdown effect
Seeback effect
is minimum when load current is zero
is maximum when load current is zero
is always zero
remains constant irrespective of load current variations
passes low frequency signals
passes high frequency signals
passes signals between two frequency limits
rejects signals between two frequency limits
low-pass filter
high-pass filter
band-pass filter
band-stop filter