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Higher Study | Analog Electronics | Power Amplifiers and 555 Timer and Voltage Regulators

The voltage across a zener diode
Most commonly used control element in voltage regulators is
Pulsating output of a rectifier is converted into a steady DC level by 
Which amplifier whose output current flows for the entire cycle?
Class C is an amplifier whose output current flows for
Transistor when used as a power amplifier is generally mounted on a metallic plate so as to
Statement (I) : A monostable multi-vibrator, when switched on remains in a quasi stable state. Statement (II) : Quasi stable state duration is decided by charging time of capacitor. 
In any function where microphone, amplifier and speakers are used often one would hear a humming sound, which increases in volume gradually. This is due to:
For an N bit F – V converter, to ensure less than ½ LSB output ripple, the time constant T of simple RC low pass filter must be at least (Where T0 is the output period of the n bit converter):
For an Astable multivibrator shown here, the frequency can be calculated as:
What is the name of the circuit shown above?
What is the most popular IC used in timing circuits?
What is the minimum power rating required for a transistor used in class A amplifier with a single transistor if the amplifier delivers 50 W to a transformer-coupled load? Assume that the transformer is ideal?
The power amplifiers in which the operating point is so adjusted that the collector current flows only during the positive half-cycle of the input signal are known as
Consider the following statements regarding 555 timer: 1. It operates on -5 V to +18 V supply voltage in both free running and one-shot modes. 2. It has a high current output and it can source or sink 500 mA. 3. The output can drive TTL and has a temperature stability of 80 parts per million (ppm) per degree celsius change in temperature or equivalently 0.008 %/°C. Which of the above statements are not correct?
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