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RC Circuit w/ Function Generator
Purpose:A square wave charges and discharges a capacitor and the charging time is observed on the oscilloscope. To demonstrate the time constant of an RC circuit and its dependence on R and C.
Procedure:Connect R and C in series and use the PASCO generator's square waves as a signal source. Start with 100 Ω resistor and 0.47 μF capacitor and display the voltage across the capacitor (see 2nd picture). Vary the values of C and R (provided) to show the change of the time constant. Show the voltage across the resistor to demonstrate the current dependence in the circuit (see 3rd picture). A schematic of the set up is shown below (4th picture).
Hints:New Tektronix DPO 3014 Scope Setup: