Q11. What is LED?
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- 2. In the previous diagram for an LED circuit, the power supply is a 9V battery and we are using a Red LED whose voltage drop is 2V. The specification sheet for the LED recommends that the "ON" current should be 10 milliamps. a. What series resistor will give the specified LED current? 7737-1 C. b. What is the power dissipated by the resistor you selected in part a? A 70 2 What is the power dissipated in the LED?A 2 Volt signal travels from 50 Ohms to 75 Ohms, find the voltage at the interface. If the 2 Voltsignal travels the other way, from 75 Ohms to 50 Ohms. Find the voltage at the interface inboth cases and if it is different explain whyGive a brief introduction about the topic of generation and measurement of direct current voltage...(if possible for 2 pg or 1 pg) high voltage engineering subject..
- a) Graphically show the differences between alternating current voltage (A.C) and direct current voltage (D.C). What are the advantages of A.C compared to D.C?The voltage regulation can be equal to zero when: OThe t and current is not too high. OThe p.f. is leading p.f. for any possible current. OThe p.f. is lagging p.f. for rated current.M.C.Q Q.Why the switches used in weighted resistor DAC are of single pole double throw (SPDT) type? To connect the resistance to either reference voltage or ground To connect the resistance to reference voltage To connect the resistance to output To connect the resistance to ground
- Given the zener voltage at 9V and the zener power at 1W, what is the range of allowable values of Iz (operating values). a) 0.11A b) 22mA to 89mA c) 9A d) 0.11A to 9AQ10. Determine maximum and minimum value of Zener current if value of series resistance is 1 K, load resistance is 2KN and input varies from 10V to 30V. Zener voltage is 5 V. Q11. What is LED? Q12. Which materials are used in manufacturing of LEDS?Q11. What is LED? Plz Write like a summary
- if i want building power supply out 9v. full wave rectifier ,Consists of resistor and 2 capacitor and 4 dimes and transformer .what is the Equations and circuit diagram for itDescribe the purpose of a PV and PQ curves. Draw the curves and explain its position (stability & unstable areas) Describe the difference between each curve by reference to the curves and explain when each one would be usedPlease consider written value of resistors..