1. Which of these is incorrect for an operational amplifier? a) It has a high voltage gain b) It is a direct coupled amplifier c) It is only useful for amplifying AC signals d) It was originally designed to perform mathematical operations

Ex. 1915. An Arduino analog input voltage is 3.160 volts. Arduino PWM output pin drives a low-pass filter, as shown in Figure 1915. The low-pass filter converts the PWM signal back to an average-DC voltage. Arduino specifications include: I/0 voltage range of e to 5VDC; 10-bit A/D input; and an 8-bit D/A PWM output. an analog output DC volage at the low-pass filter. Determine (Vout - Vin). The analog input DC voltage results in

What does the PWM duty cycle control in relation to the analogue output generated? The overall noise level in the analogue signal The PWM period The average amplitude of the analogue signal The PWM timebase