In the circuit of Figure 1, the switch is initially at position 1, and the capacitor is uncharged. R i(t) + C Ve 5 V Fig

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In The Circuit Of Figure 1 The Switch Is Initially At Position 1 And The Capacitor Is Uncharged R I T C Ve 5 V Fig 1 (55.26 KiB) Viewed 31 times

In The Circuit Of Figure 1 The Switch Is Initially At Position 1 And The Capacitor Is Uncharged R I T C Ve 5 V Fig 2 (60.72 KiB) Viewed 31 times

In the circuit of Figure 1, the switch is initially at position 1, and the capacitor is uncharged. R i(t) + C Ve 5 V Figure 1 At t = 0, the switch is flipped to position 2 which connects V, to the RC circuit. The capacitor charges up, and its voltage increases exponentially towards V₁, with a time constant, + (= RC). After one millisecond, the switch is put back into position 1. The capacitor now discharges, and its voltage decreases exponentially towards OV. The switch is toggled at this rate between the two pole positions. EEE20002 & EEE20006- Lab 3 Page 1 For the charging interval, at t=r (assuming at t=0, vc(0) = OV), vc(t) = 0.632 V₁ = 3.16V (for V₁ = 5V). For the discharging interval, at t-t (assuming at t=0, vc(0) = Vs). Vc(t) = 0.368 V₁ = 1.84V (for V₂ = 5V). Required Equipment Prototyping board Digital Multimeter (DMM) Signal Generator Oscilloscope (CRO) R= 10k resistor C = 15nF capacitor +
Swap the positions of the resistor and capacitor to realise the circuit shown in Figure 2. HH C signal source Figure 2 Set the signal generator to square wave mode and amplitude swings of 0 to 5V. The period (T) of the square wave should be chosen so that T >>. Again, a suitable value for T is around 2ms. Connect one channel of the CRO to display the voltage Vxy, and the other channel to monitor the voltage VR across the resistor. (a) From the waveforms, measure the actual : of the circuit. T= 0.152 ms (b) Sketch Vxy over one period, and on it, superimpose the waveform across the resistor. The waveforms should be clearly labelled to include information on 1 and ve(s). Label the axes. input Im ams tcms) Su 2 -5 t www +51 R 3m VR (V)