A. 555 Timer as an Astable Multivibrator 1. Compute the duty cycle and frequency for a 555 astable multivibrator if RI = 1 kQ, R2 = 180 kQ, and C1 = 0.01 µF. 2. For the 555 astable multivibrator, determine R1 and R2 necessary for a period of 12s if Cl=10 µF and the required duty cycle is 0,60.
A. 555 Timer as an Astable Multivibrator 1. Compute the duty cycle and frequency for a 555 astable multivibrator if RI = 1 kQ, R2 = 180 kQ, and C1 = 0.01 µF. 2. For the 555 astable multivibrator, determine R1 and R2 necessary for a period of 12s if Cl=10 µF and the required duty cycle is 0,60.
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Requirements:
Frequency = 7.1656×10^-5 sec
Duty Cycle = 59.48%
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![A. 555 Timer as an Astable Multivibrator
1. Compute the duty cycle and frequency for a 555 astable multivibrator if RI = 1 kQ, R2 = 180 kQ, and
C1 = 0.01 µF.
2. For the 555 astable multivibrator, determine R1 and R2 necessary for a period of 12s if Cl=10 µF and
the required duty cycle is 0,60.
3. Assume the 555 astable multivibrator in Figure 6 is operating from +15 V. What voltage range do you
expect to see across capacitor C1?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc3f860e3-d8e0-470e-8c56-f7cd9b5d9599%2Fe06d5b64-0b4d-40fc-bb34-2d0b70e269a0%2Fy2qtw0k_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A. 555 Timer as an Astable Multivibrator
1. Compute the duty cycle and frequency for a 555 astable multivibrator if RI = 1 kQ, R2 = 180 kQ, and
C1 = 0.01 µF.
2. For the 555 astable multivibrator, determine R1 and R2 necessary for a period of 12s if Cl=10 µF and
the required duty cycle is 0,60.
3. Assume the 555 astable multivibrator in Figure 6 is operating from +15 V. What voltage range do you
expect to see across capacitor C1?
![A.
555 Timer as an Astable Multivibrator
+5.0 V
555
8
R1
7.5 k
Ve
RESET
DIS
10 k
THRESH
OUT
Output
TRIG
CONT
GND
0.01 F
Figure -6
1. Construct the astable multivibrator circuit shown in Figure 6.
2.
Using an oscilloscope, measure the frequency and duty cycle of the circuit and record it in following table.
Frequency
Duty Cycle
3. With the oscilloscope, observe the waveforms across capacitor C; and the output waveform at the same time. Sketch
the observed waveforms.
Capacitor waveform:
Output waveform:](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc3f860e3-d8e0-470e-8c56-f7cd9b5d9599%2Fe06d5b64-0b4d-40fc-bb34-2d0b70e269a0%2Fxp2bros_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A.
555 Timer as an Astable Multivibrator
+5.0 V
555
8
R1
7.5 k
Ve
RESET
DIS
10 k
THRESH
OUT
Output
TRIG
CONT
GND
0.01 F
Figure -6
1. Construct the astable multivibrator circuit shown in Figure 6.
2.
Using an oscilloscope, measure the frequency and duty cycle of the circuit and record it in following table.
Frequency
Duty Cycle
3. With the oscilloscope, observe the waveforms across capacitor C; and the output waveform at the same time. Sketch
the observed waveforms.
Capacitor waveform:
Output waveform:
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