What is IC 555?

1 Answer

Answer :

Ic 555 is timer used for indicating time intervals which is settled in ic 

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Description : What is the full form of IC?

Last Answer : Instrument circuit

Description : Why is it called a 555 timer?

Last Answer : Because it have three 5k Ohm resistances.

Description : What is the use of 555 timer?

Last Answer : 555 IC timer is use in timers and oscillators.

Description : Give different types of IC.

Last Answer : 1. Analog IC 2. Digital IC 3. Thin and thick film ICs 4. Monolithic ICs 5. Hybrid or multichip ICs

Description : Describe the functional pin diagram of regulator IC 78XX and 79XX.

Last Answer : IC 78XX: Explanation: 78XX series of IC regulators is representative of three terminal devices that are available with several fixed positive output voltages. It has three terminals labeled ... can also use 25μF aluminum electrolytic capacitor. Values given may be increased without limit. 

Description : Write important features of IC 723.

Last Answer : Important features of IC 723: i) It can be connected to function as a positive or negative voltage regulator with an output voltage ranging from 2V to 37V. ii) Output current can be up to 150 ... . v) Built-in short circuit protection. vi) Very low temperature drift. vii) High ripple rejection.

Description : The IC chips, used in computers, is made of  (1) Iron oxide (2) Silicon (3) Graphite (4) Silica

Last Answer : 2 These are made on silicon wafers which is aa semi conductor. ...

Description : what is integrated circuit ?

Last Answer : The integrated circuit is the semiconductor chip which has lots of small size resistors, capacitors, and transistors. There are so many applications of the integrated circuit. The different Integrated circuit ... are two types of integrated circuit one is analog or linear and second is digital.

Description : Draw a labelled pin diagram of IC-555 and state function of each pin

Last Answer : Pin Name Purpose 1 GND Ground reference voltage, low level (0 V)  2 TRIG The OUT pin goes high and a timing interval starts when this input falls below 1/2 of ... 8 Vcc Positive supply voltage, which is usually between 3 and 15 V depending on the variation.

Description : Draw circuit diagram of Bistable multivibrator using IC-555 and explain its working.

Last Answer : Definition – A multivibrator which has two stable states, one can be change to other when trigger pulse is applied, known as bistable multivibrator. Circuit diagram of Bistable multivibrator using IC555

Description : Which of the following are the basic elements in a 555 timer IC? (a) Two comparators (b) A flip-flop (c) A discharge transistor (d) A resistive voltage divider  A) (a), (b) and (d) B) only (a), (b) and (c) C) only (b), (c) and (d) D) only (a), (b), (c) and (d)

Last Answer : Which of the following are the basic elements in a 555 timer IC? (a) Two comparators (b) A flip-flop (c) A discharge transistor (d) A resistive voltage divider  A) (a), (b) and (d) B) only (a), (b) and (c) C) only (b), (c) and (d) D) only (a), (b), (c) and (d)

Description : IC 555 is used for

Last Answer : IC 555 is used for Making oscillator

Description : Timer IC 555 has no pin for  A) Threshold B) Set C) Trigger D) Control

Description : Complete the following sequence: 9 × 111 = 999 9 × 222 = 1998 9 × 333 = 2997 9 × 444 = ______ 9 × 555 = ______ 9 × 666 = ______

Description : Why GRAB 555 the most trusted agent MalaysiaTRUSTED ONLINE CASINO MALAYSIAONLINE CASINO MALAYSIA TRUSTEDTRUSTED PAYOUT CASINO MALAYSIAOfficial By: GRAB 555?

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Description : How do you round 555.55 to the nearest tenth?

Last Answer : 555.6

Description : He sent 555 players back to the pavilion just 281 innings of 147 test matches and proved himself No. 1 wicket keeper: A. Boucher (SA) B. Gilchrist (Aus) C. Healy (Aus) D. Stewart (Eng)

Last Answer : ANSWER: A

Description : He sent 555 players back to the pavilion just 281 innings of 147 test matches and proved himself No. 1 wicket keeper: A. Boucher (SA) B. Gilchrist (Aus) C. Healy (Aus) D. Stewart (Eng)

Last Answer : ANSWER: A

Description : He sent 555 players back to the pavilion just 281 innings of 147 test matches and proved himself No. 1 wicket keeper: A. Boucher (SA) B. Gilchrist (Aus) C. Healy (Aus) D. Stewart (Eng)

Last Answer : ANSWER: A

Description : He sent 555 players back to the pavilion just 281 innings of 147 test matches and proved himself No. 1 wicket keeper: A. Boucher (SA) B. Gilchrist (Aus) C. Healy (Aus) D. Stewart (Eng)

Last Answer : ANSWER: A

Description : He sent 555 players back to the pavilion just 281 innings of 147 test matches and proved himself No. 1 wicket keeper: A. Boucher (SA) B. Gilchrist (Aus) C. Healy (Aus) D. Stewart (Eng)

Last Answer : ANSWER: A

Description : He sent 555 players back to the pavilion just 281 innings of 147 test matches and proved himself No. 1 wicket keeper: A. Boucher (SA) B. Gilchrist (Aus) C. Healy (Aus) D. Stewart (Eng)

Last Answer : ANSWER: A

Description : When a voltage of 124 VDC is applied to the illustrated circuit with a resistance of 17.8 ohms the current will be ________. EL-0018 A. 0.143 amps B. 2.555 amps C. 6.966 amps D. 141.8 milliamps

Last Answer : Answer: C

Description : 355. A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m3 and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 ... to cool to 60°C is (A) 555 (B) 55.5 (C) 0.55 (D) 0.15

Description : List the applications of 555 timer in Astable mode of operation

Last Answer : *FSK generator  *Pulse-position modulator

Description : List the applications of 555 timer in monostable mode of operation

Last Answer : *missing pulse detector *Linear ramp generator *Frequency divider *Pulse width modulation.

Description : Mention some applications of 555 timer

Last Answer : *Oscillator *pulse generator *ramp and square wave generator *mono-shot multivibrator *burglar alarm *traffic light control.

Description : The following are true about spectral sensitivity of the retina: a. in scotopic conditions, the peak sensitivity of the eye is near 500 nm b. under photopic conditions the peak sensitivity is near 555 nm c ... light the retina has a peak sensitivity near 440 nm to a 25-Hz stimulus d. all above

Last Answer : all above

Description : The following are true about spectral sensitivity of the retina: a. in scotopic conditions, the peak sensitivity of the eye is near 500 nm b. under photopic conditions the peak sensitivity is near 555 nm c ... light the retina has a peak sensitivity near 440 nm to a 25-Hz stimulus d. all above

Description : The following are true about spectral sensitivity of the retina: a. in scotopic conditions, the peak sensitivity of the eye is near 500 nm b. under photopic conditions the peak sensitivity is near 555 nm c ... light the retina has a peak sensitivity near 440 nm to a 25-Hz stimulus d. all above

Description : True statement about dark adaptation include: a. there is a shift in peak spectral sensitivity from 555 nm to 505 nm with dark adaptation b. rods are more sensitive than cone during dark adaptation c. biphasic changes only occur in retina which processes both rods and cones d. all above

Last Answer : all above

Description : 3√7469 x √668 = ? a) 450 b) 300 c) 505 d) 465 e) 555

Last Answer : 3√7469 × √668 = ? = 19.5 × 25.9 = 505.05 = 505 (approx) Answer: c)

Description : Amit sold an article for Rs 630 and earned a profit of 20%. Find the cost price for Amit. 1. Rs 555 2. Rs 535 3. Rs 552 4. Rs 525

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Description : The Octal number to be given alogn with chmod command to make a file readable, writable and executable to the owner, readable and executable to group and others is: A. 000 B. 755 C. 744 D. 555 E. None of the above

Last Answer : B. 755

Description : The average of the 3 digit number, which remain the same when the digits interchange their positions is. A) 444 B) 555 C) 666 D) 777 

Last Answer : B) Average = (111+222+333+444+555+666+ 777+888+999)/9 =(111+999)+(222+888)+ (333+777)+(444+666)+ 555/9 =(4*1110)+555/9 =4440 + 555/9 =4995/9 =555.

Description : The output waveform of a 555 Timer is: (1) Sinusoidal (2) Triangular (3) Rectangular (4) Elliptical 

Last Answer : The output waveform of a 555 Timer is: Rectangular

Description : The 555 timer can be used in which of the following configurations ?  a) astable, monostable b) monostable, bistable c) astable, toggled d) bistable, tristable

Last Answer : The 555 timer can be used in astable, monostable configurations.