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.
Wayne Parham Messages: 18695 Registered: January 2001
Illuminati (33rd Degree)
There are several things that resistance in the circuit can be made to do. It can be used to provide attenuation and it can also be used to set the Q of the circuit. So the differences in values and configuration are what set those things. In some cases, all that is needed is a voltage divider, but in other cases the Q of the circuit is modified to tailor response.
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