Q.1 A simple transistor buffer is required to drive a length of coaxial cable having a...

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Q.1 A simple transistor buffer is required to drive a length of coaxial cable having a capacitance of 100 pF m¯¹ of cable. The total steady-state power dissapation of the buffer must not exceed 250 mW and the propagation delay (defined as the time taken for the output to go from Vcc to Vcc/2 for a length of cable) must not exceed 100 ns. The buffer is to be driven by a TTL logic gate. If a transistor is available which has a minimum F of 50 and V≈ 0.8 V, determine the maximum length of cable that can be driven. Q.2 A buffer circuit is required to drive the piezo-electric buzzer in a door alarm system. The door mechanism generates a TTL logic compatible output signal and can provide 10 mA of output current where Vo = 2.4V. The output signal is HI when the alarm should be activated. The buzzer operates from 12 V supply and has an equivalent load resistance of R = 80 and a negligible inductance. A transistor is available which has a nominal 3 = 100 and VBE = 0.8 V. Design an appropriate buffer circuit, explaining the rationale of your design and determining the values of all components used. Q.1 A simple transistor buffer is required to drive a length of coaxial cable having a capacitance of 100 pF m¯¹ of cable. The total steady-state power dissapation of the buffer must not exceed 250 mW and the propagation delay (defined as the time taken for the output to go from Vcc to Vcc/2 for a length of cable) must not exceed 100 ns. The buffer is to be driven by a TTL logic gate. If a transistor is available which has a minimum F of 50 and V≈ 0.8 V, determine the maximum length of cable that can be driven. Q.2 A buffer circuit is required to drive the piezo-electric buzzer in a door alarm system. The door mechanism generates a TTL logic compatible output signal and can provide 10 mA of output current where Vo = 2.4V. The output signal is HI when the alarm should be activated. The buzzer operates from 12 V supply and has an equivalent load resistance of R = 80 and a negligible inductance. A transistor is available which has a nominal 3 = 100 and VBE = 0.8 V. Design an appropriate buffer circuit, explaining the rationale of your design and determining the values of all components used.

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Q1 Transistor Buffer Design Transistor buffer is an electronic circuit that is used to amplify the input signal without any significant change in the waveform of the signal It can also be used to driv... View the full answer