121.2d MJ16 P42 Q8 Saturated Sawtooth Output | A2 Electronics: Op-Amps | Cambridge A Level Physics

Example 1 - 9702/42/M/J/16: An ideal operational amplifier (op-amp) has infinite voltage gain and infinite slew rate. #9702s16p42 #Lv2 #A2opAmpP4

(a) State what is meant by (i) the voltage gain, (ii) infinite slew rate.

(b) A non-inverting amplifier circuit incorporating an ideal op-amp is shown in Fig. 8.1. The supply to the op-amp is +9 V / −9 V. The voltage gain of the amplifier circuit is 12. Determine the resistance of resistor R.

(c) For the circuit of Fig. 8.1, the variation with time t of the input potential VIN to the amplifier is shown in Fig. 8.2. On Fig. 8.3, show the variation with time t of the output potential VOUT for time t = 0 to time t = t2.
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[ganhuilin]

Hi, for this question part c, there is also voltage in the V- right? So why do we not consider that? When do we draw the square wave and when do we draw the wave in part c?

[mahazain]

Do we have to draw a vertical line at t1 from +9V to -9V?