The reason for using a precision OPAMP based rectifier diode for detecting weak AM signals is that
A. the demodulation is easy
B. the signal is amplified and power is less
C. the noise is less and easy to filter
D. the cut-in voltage of the diode is reduced
Answer: Option D
This Question Belongs to Electronics And Communications Engineering >> Analog Electronics
The action of JFET in its equivalent circuit can best be represented as a
A. Current controlled Current source
B. Current controlled voltage source
C. Voltage controlled voltage source
D. Voltage controlled current source
In a p+n junction diode under reverse bias, the magnitude of electric field is maximum at
A. The edge of the depletion region on the p-side
B. The edge of the depletion region on the n-side
C. The p+n junction
D. The center of the depletion region on the n-side
To prevent a DC return between source and load, it is necessary to use
A. Resistor between source and load
B. Inductor between source and load
C. Capacitor between source and load
D. Either A or B
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