1. What is the threshold voltage, VTH and minimum current that will turn ON the LEDS? CC LAB MANLIAI 17Dec2018 VO2 Page 9 of 47
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- 4a) This question is about half wave rectifier Half wave rectifier with a reservoir capacitor -> connected -> AC mains supply (220Vrms, 50Hz) by 20:1 transformer. What is the value of capacitor for the ripple voltage of X% of the peak input voltage? The load's maximum current is 170mA. Show the full working!In a full-wave rectifier _______________. a) the output is apure DC voltage. b) only the negative half of the input cycle is used. c) only the positive half of the input used. d) the complee input cycle is used.1. For the ADC0804 used in section 1. the step size can be adjusted by setting the reference voltage on pin 9. When this pin is not connected (as shown in the figure 1 schematic), the reference voltage is the operating voltage Vcc. a) What is the step size for this default setting? b) How can we set the reference voltage on pin 9. to 4 V? c) What would be the step size after changing the reference voltage to 4 V? 2. Determine the analog input that will result in an output code of "10001110". Assume 5 V reference. Show your calculations. 3. What value of the analog input voltage would result in a digital output is 6F (hex)? Assume 4V reference. Show calculations. 4. In section, you used a 8-bit D/A converter. With a reference voltage of 5 V, what voltage does each bit represent in terms of the analog output? Show calculations. 5. For the D/A converter, if the output is 3.62 V, what is the value of the digital input? Show calculations. 6. For the D/A converter circuit shown in Figure 2,…
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