Monostable Multivibrator Applications

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

Match the following IC 555 pins with their functions:

Pin-6 = Non-inverting terminal of the upper comparator Pin-7 = Collector of the discharge transistor Pin-8 = Positive supply voltage connection

Match the following IC 555 pins with their functionalities in a monostable multivibrator:

Pin-6 = Setting the flipflop and making the timer output low Pin-7 = Discharging the external capacitor Pin-8 = Connection for positive supply voltage

Match the following applications with their corresponding use of IC 555:

Monostable multivibrator = Functioning as a one-shot multivibrator Astable multivibrator = Generating continuous square wave signals Pulse Width Modulator (PWM) = Regulating the width of output pulses Voltage Controlled Oscillator = Producing frequency-modulated signals

Match the following modulators with their applications using IC 555:

<p>Pulse Amplitude Modulator (PAM) = Not mentioned in IC 555 applications Pulse Position Modulator (PPM) = Not mentioned in IC 555 applications Frequency-Shift Keying (FSK) = Not mentioned in IC 555 applications Ramp Generator = Not mentioned in IC 555 applications</p> Signup and view all the answers

Match the following electronic processes with their corresponding timing circuits:

<p>TV sleep timer = IC-555 Washing machine timer = IC-555 Traffic signaling timer = IC-555 Industrial heating timer = IC-555</p> Signup and view all the answers

Match the following applications with the correct use of IC-555:

<p>Burglar alarms = IC-555 Voltage control oscillators = IC-555 Ramp generators = IC-555 Styling web pages = CSS</p> Signup and view all the answers

Match the following components with their functions in IC-555:

<p>Comparators (using op-amp) = IC-555 RS flip-flop = IC-555 Discharge transistor = IC-555 Multiplexer = SQL</p> Signup and view all the answers

Match the following supply voltage ranges with the operating range of IC-555:

<p>+5V to +18V = IC-555 +3.3V only = JavaScript +12V to +24V = Python +1.5V to +4.5V = CSS</p> Signup and view all the answers

Match the following terms with their corresponding meanings:

<p>Monostable multivibrators = IC-555 applications Astable multivibrators = Electronic systems Waveform generators = Voltage control oscillators Database queries = SQL</p> Signup and view all the answers

Match the following pin functions with their descriptions in IC-555:

<p>Pin-1: Ground = Reference or ground point of the IC Pin-2: Vcc = +5V to +18V supply voltage range Pin-3: Output = Output signal of the IC Pin-4: Reset = Reset input for the IC</p> Signup and view all the answers

Match the following components with their functions in an astable multivibrator using IC-555:

<p>Lower comparator = Resetting the flip-flop when capacitor voltage is less than VCC/3 Upper comparator = Setting the flip-flop when capacitor voltage reaches 2VCC/3 Transistor = Cutting off during the charging phase and saturating during the discharging phase Capacitor = Charging through series resistors during the charging time and discharging through RB during the discharging time</p> Signup and view all the answers

Match the following actions with their effects on the timer output of an astable multivibrator using IC-555:

<p>Lower comparator output goes high = Resets the flip-flop, making the timer output go high Upper comparator provides a high output = Sets the flip-flop, making the timer output go low Transistor saturates = Output goes to a low state Capacitor starts discharging through RB and the transistor = Leads to the timer output going high after reaching VCC/3</p> Signup and view all the answers

Match the following pin connections of IC-555 with their purposes in an astable multivibrator circuit:

<p>Pin-4 connected to supply voltage = Power supply connection Pin-5 bypassed to ground through a capacitor = Noise filtering from the control voltage External components connected to Pin-5 = Capacitor of 0.01 μF for noise filtration Internal components of IC 555 not shown = Only external components shown in schematic diagram</p> Signup and view all the answers

Match the following time periods with their definitions in an astable multivibrator using IC-555:

<p>Charging time (tc) = Time during which the timer output is high Discharging time (td) = Time during which the timer output is low Total time period (T) = Sum of charging time and discharging time Capacitor charges from VCC/3 to 2VCC/3 = Charging phase of the capacitor</p> Signup and view all the answers

Match the following terms with their correct formulas:

<p>ON TIME (tON) = 0.693 (RA + RB) C OFF TIME (tOFF) = 0.693 RB C Total time period (T) = 0.693 (RA + 2RB) C Duty Cycle (D) = tON / T</p> Signup and view all the answers

Match the following expressions with their meanings:

<p>tOFF = td = Discharging time Duty Cycle = D = Ratio of on time to total time period f = 1 / T = Frequency of oscillation T = tc + td = Total time period of the output waveform</p> Signup and view all the answers

Match the applications with the correct usage of Astable multivibrator:

<p>Square wave oscillator = Produces continuous train of rectangular pulses Free running ramp generator = Can be used as clock signal in digital circuits Voltage control oscillator (VCO) = One of the applications of Astable multivibrator Clock signal in digital circuits = Generated by Astable multivibrator</p> Signup and view all the answers

Match the following voltages with their corresponding levels during discharging:

<p>2VCC/3 = Initial voltage level during discharging VCC/3 = Final voltage level during discharging VCC = Voltage level not mentioned in discharging process 3VCC/2 = Voltage level not mentioned in discharging process</p> Signup and view all the answers

Match the components with their roles in the circuit:

<p>RA = Affects the timing of ON TIME and frequency of oscillation RB = Affects the timing of OFF TIME and duty cycle C = Capacitance value influencing time periods 1.44 = Constant factor in calculating frequency</p> Signup and view all the answers

Match the application with the correct description:

<p>Frequency divider = Divides input frequency by a certain factor Pulse width modulator = Modulates the width of input pulses PAM and PPM (pulse position modulator) = Modulates pulse position for analog and digital signals Trigger circuit for providing ‘gating pulse’ in digital systems = Generates pulse for gating in digital circuits</p> Signup and view all the answers

Match the expression with the correct variable:

<p>vc = VCC (1 – e^(-t/RC)) = Voltage across capacitor during charging tp = RC log_e(1/3) = Time taken by capacitor to charge from 0 to 2VCC/3 (2VCC - VCC) = VCC(1 - e^(-tp/3RC)) = Equation for capacitor voltage reaching 2VCC/3 tp = 1.1 RC = Formula for varying ON TIME by changing R or C or both</p> Signup and view all the answers

Match the multivibrator type with its characteristic:

<p>Monostable multivibrator = Has one stable state and changes to unstable state after a trigger Astable multivibrator = Does not have any stable state and changes states periodically Free-running multivibrator = Operates without external trigger to change output state Bistable multivibrator = Has two stable states and can remain in either until triggered</p> Signup and view all the answers

Match the IC-555 configuration with its operation:

<p>Monostable operation = Produce a single pulse of a specified duration upon trigger Astable operation = Generate continuous square wave output without external triggering Bistable operation = Remain in one of two stable states until triggered to switch</p> Signup and view all the answers

Match the components with their impact on ON TIME:

<p>Changing R = Varies the charging rate of the capacitor Changing C = Alters the capacity of the capacitor affecting charging time Changing both R and C = Combined effect on charging time and ON TIME Maintaining constant R and C = Keeps ON TIME consistent over multiple cycles</p> Signup and view all the answers

Match the terms with their meanings:

<p>Threshold input (pin 6) = 'Set' voltage level that triggers a change in output state Trigger input (pin 2) = 'Reset' voltage level that initiates a change in output state Stable state = State where output remains until an external trigger is received Unstable state = 'Transient' state that changes periodically without external triggers</p> Signup and view all the answers

Flashcards are hidden until you start studying

Study Notes

IC 555 Pin Functions and Applications

  • Pin functions in a monostable multivibrator: pins have specific roles in the circuit
  • Applications of IC 555: monostable multivibrator, astable multivibrator, timer, and oscillator
  • Modulators using IC 555: amplitude modulation, frequency modulation, and pulse width modulation
  • Timing circuits: monostable multivibrator, astable multivibrator, and 555 timer IC
  • Operating range of IC-555: supply voltage range of 4.5V to 15V
  • Functions of components in IC-555: resistors, capacitors, and diodes have specific roles
  • Pin functions and descriptions: trigger, threshold, discharge, reset, control voltage, and output
  • Components in an astable multivibrator: resistors, capacitors, and diodes have specific roles
  • Effects on timer output: changing resistance, capacitance, or supply voltage affects output
  • Pin connections and purposes: trigger, threshold, discharge, and output pins have specific roles
  • Time periods: Ton (on-time), Toff (off-time), and frequency have specific definitions
  • Formulas: T = 0.69 * R * C, f = 1 / (0.69 * R * C) have specific meanings
  • Expressions: duty cycle, frequency, and pulse width have specific meanings
  • Applications of astable multivibrator: clock generator, pulse generator, and signal generator
  • Voltages during discharging: capacitor voltage decreases from Vcc to 1/3 Vcc
  • Components in a circuit: resistors, capacitors, and diodes have specific roles
  • Application descriptions: monostable multivibrator, astable multivibrator, and timer
  • Variable expressions: RC, R1, R2, C, and Vcc have specific meanings
  • Multivibrator types: monostable, astable, and bistable have specific characteristics
  • IC-555 configurations: monostable, astable, and bistable have specific operations
  • Components affecting ON TIME: resistors and capacitors have specific impacts
  • Term meanings: monostable, astable, bistable, and multivibrator have specific definitions

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team
Use Quizgecko on...
Browser
Open
Browser
Browser