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Q. Explain Telephone hand set and it’s working ?
A standard telephone set is comprised of a transmitter, a receiver and electrical network for equalization, associated circuitry to control side tone levels and to regulate signal power, and necessary signalling circuitry. Essentially a telephone setis an apparatus which creates an exact likeness of sound waves with an electric current. Figure demonstrates functional block diagram of a telephone set. Essential components of a telephone set are ringer circuit, on/off hook circuit, equalizer circuit, hybrid circuit, speaker, microphone and a dialling circuit.
DC Motor Starting When voltage is applied to the armature of a dcmotorwith the rotor stationary, no emf is generated and the armature current is limited only by the internal ar
You are asked to design a circuit that indicates if a 12 V battery has been connected the correct way around to two terminals, A and B. To do this, you have chosen to use a special
Memory Address The memory address is of 16 bits. It ranges from 0000?H to FFFH 16bits address lines of 8085 microprocessor are capable of addressing 216 i e 65, 536, ( or
Need help on Final exam with duration 2hrs30min
(a) Average rainfall during the month of January is found to be R mm. A Class A pan evaporation recorded an average of [7 + ( R /100)] mm/day near an irrigation reservoir. The av
what is the difference between latch and flipflop
explain about led
Q. The block diagram of Figure represents a multi loop control system. (a) Determine the transfer function C(s)/R(s). (b) For G 2 G 3 H 2 = 1, evaluate C(s)/R(s).
PRINCIPLE OF LED
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