Design a 555 astable multivibrator using 2 resistors – Ra and Rb and a capacitor C, as shown in the circuit shown below. The specifications are: C = 680pF, one of the resistors is 10kΩ, and a duty cycle of 65%. Calculate all the values in the table, show

| January 11, 2016

Electronics II and Lab

Oscillators

Design a 555 astable multivibrator using 2 resistors – Ra and Rb and a capacitor C, as shown in the circuit shown below. The specifications are: C = 680pF, one of the resistors is 10kΩ, and a duty cycle of 65%. Calculate all the values in the table, show ALL work.

INTRODUCTION

State the theory behind the lab

Answer the pre-lab question(s), and perform calculations if necessary.

EQUIPMENT

List of devices and meters used to conduct the experiment

PROCEDURE

Steps you took to carry out the lab.

RESULTS

What did you discover/confirm?

Screen shots of the meter readings.

Use tables and diagrams to record results.

Compare calculations with the measured values.

  Calculate/Given Measure
Ra    
Rb    
tH    
tL    
period    
frequency    

 

CONCLUSION

What did you learn?

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