40 Questions
What is a characteristic of linear integrated circuits (ICs) that distinguishes them from other types of ICs?
Their output is directly proportional to the input
Which of the following applications is NOT typically associated with instrumentation amplifiers?
Power supplies
What is the primary function of the 78XX series of voltage regulators?
To regulate the output voltage in power supply circuits
What is the primary function of a comparator?
To compare two input voltages and produce a high or low output
What is the typical dropout voltage for the 78XX series of voltage regulators?
2V
Which of the following is a characteristic of operational amplifiers (Op-Amps)?
They have a high voltage gain
What is the primary function of a current sense amplifier?
To measure current flow through a shunt resistor
What is the primary limitation of linear voltage regulators like the 78XX series?
All of the above
What is the primary advantage of SMPS over traditional linear power supplies?
Higher efficiency and minimized power dissipation
What is the purpose of the switching transistor/MOSFET in an SMPS?
To switch the DC voltage on and off at high frequency
What is the formula to calculate the output voltage of a 78XX series voltage regulator?
Vout = Vin - Vdropout
What is the function of the feedback circuit in an SMPS?
To monitor the output voltage and adjust the duty cycle
Why is a heat sink required in some applications of the 78XX series voltage regulators?
To dissipate excess heat generated by the regulator
What is the purpose of the transformer in an SMPS?
To transform the voltage to a higher or lower level and provide galvanic isolation
In which of the following applications is SMPS not commonly used?
Aerospace systems
What is the primary function of a Voltage-Controlled Oscillator (VCO)?
To produce an oscillating output whose frequency can be controlled by an input voltage
What is the primary advantage of Switched Mode Power Supplies (SMPS) over traditional linear power supplies?
Efficiency and compact size
Which of the following is NOT a functional block of the LM723 voltage regulator?
Analog-to-Digital Converter
What is the main function of the Comparator component in the 555 timer IC?
To monitor the voltage at the Trigger and Threshold inputs
What is the primary function of a Pulse Width Modulation (PWM) generator?
To produce a PWM signal for applications like motor speed control and LED dimming
In what mode can the 555 timer IC be used to generate a single, precise pulse in response to an external trigger?
Monostable Multivibrator
What is the primary application of a Phase-Locked Loop (PLL)?
Frequency synthesis
Which of the following is a common application of the LM723 voltage regulator?
Power supply regulation
In a monostable multivibrator, what determines the pulse width?
The external RC circuit
What is the purpose of the Voltage Divider component in the 555 timer IC?
To provide a reference voltage for the internal comparator
What is the functionality of the 555 timer IC when configured as a Frequency Divider?
Divides the input frequency by 2
What is the primary function of an Analog Multiplier/Divider?
To multiply or divide two analog signals
What is the primary function of a Phase-Locked Loop (PLL) system?
To generate an output signal that is phase-locked to the input reference signal
What is the purpose of the low-pass filter (LPF) in a PLL system?
To remove high-frequency components and leave only the DC component
What is the IC 565 commonly used as?
A phase-locked loop (PLL) integrated circuit
Which component of the IC 565 is voltage-controlled?
VCO
What is the function of the internal filter in the IC 565 PLL?
To process the phase detector output
In which type of circuits can the IC 565 PLL be used for motor speed control?
Motor control circuits
What is a specified feature of the lock range and capture range of the IC 565 PLL?
It indicates the frequency range for locking and acquiring lock
How is frequency multiplication achieved using the 565 PLL?
By using a phase-locked loop
For which purpose is the PLL often utilized in digital communication systems?
Clock recovery
What role does the phase detector play in the IC 565 PLL?
Utilizes phase/frequency detection
In what application can the 565 PLL be used for audio tone decoding?
Communication systems
Which function does the IC 565 PLL serve in data synchronization applications?
Synchronization of data signals
What distinguishes the lock range from the capture range in the IC 565 PLL?
Lock range specifies maintaining lock, capture range specifies acquiring lock
Explore the various types of linear integrated circuits (ICs) with a focus on voltage regulators. Learn how voltage regulators provide a stable output voltage in electronic circuits regardless of input voltage or load changes. Discover their applications in power supplies, battery chargers, and electronic devices.
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