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Design a 555 astable multivibrator using 2 resistors - ra


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 10k?, and a duty cycle of 65%. Calculate all the values in the table, show ALL work.

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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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