220-A1.2

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  • Activity: Simulating simple RLC circuits
  • At the end of this activity, the student should be able to:
  1. Run DC, AC, and transient simulations using ngspice.

A Wideband RC Voltage Divider

One way to build high-speed circuits with relatively large input impedances and capacitances is to use a simple RC voltage divider, as shown in the figure below. This RC divider is commonly found in oscilloscope 10X probes.

Let and similarly . Thus, the output voltage can be expressed as:

 

 

 

 

(1)

A Lossy LC Tank

A Simple Switched-Capacitor Circuit