Posted by GarMan [ 216.13.136.38 ] on April 08, 2005 at 11:57:51:
Hi Wayne,
Can you explain to me the differences between the two types of L-Pad configurations.
Type I: "Traditional" type with R-series followed by R-paral and driver.
Type II: "PI" type with R-paral followed by R-series and driver.
From what I see, Type I is much more sensitive to resistor values when high levels of attenuation is required and also requires very low values for R-paral, which are hard to find.
Type II seems to be more "stable" and tolerant of resistance variations and uses easier to find values.
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