activity 1.2.6
Introduction
The 555 Timer oscillator is one of the most common circuits used in introductory electronics. It is a favorite among beginners because of its low cost and ease of design. These are precisely the same reasons the 555 Timer is used in the Board Game Counter design.
In this activity you will simulate and build a 555 Timer oscillator. You will observe the effect that varying the value of its resistor and capacitor values has on the oscillation frequency and duty cycle.
The 555 Timer oscillator is one of the most common circuits used in introductory electronics. It is a favorite among beginners because of its low cost and ease of design. These are precisely the same reasons the 555 Timer is used in the Board Game Counter design.
In this activity you will simulate and build a 555 Timer oscillator. You will observe the effect that varying the value of its resistor and capacitor values has on the oscillation frequency and duty cycle.
Conclusion
1. Review the results of the data collected in step (3) of the procedure.
· What effect did varying the RA have on the frequency and duty cycle?
For frequency when RA went up frequency went lower and the lower the RA went the higher the Frequency. For Duty Cycle the RA had no effect.
·What effect did varying the RB have on the frequency and duty cycle?
For frequency when RB went higher frequency went lower and when it was lower the frequency was higher. RB had no effect on Duty Cycle.
· What effect did varying the C have on the frequency and duty cycle?
Varying the C made the frequency increase when it went lower and decrease when it went higher. Varying the C had little effect on duty cycle when C went higher duty cycle went higher.
1. Review the results of the data collected in step (3) of the procedure.
· What effect did varying the RA have on the frequency and duty cycle?
For frequency when RA went up frequency went lower and the lower the RA went the higher the Frequency. For Duty Cycle the RA had no effect.
·What effect did varying the RB have on the frequency and duty cycle?
For frequency when RB went higher frequency went lower and when it was lower the frequency was higher. RB had no effect on Duty Cycle.
· What effect did varying the C have on the frequency and duty cycle?
Varying the C made the frequency increase when it went lower and decrease when it went higher. Varying the C had little effect on duty cycle when C went higher duty cycle went higher.