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Basic Operation of a 555 Timer

Basic Operation of a 555 Timer. Threshold Control Voltage Trigger Discharge Reset Output. Functional Diagram of 555 Timer. The 555 Timer Connected as a One-shot. Figure 8--49. One-shot Operation of the 555 timer. Figure 8--50. 555 Timer as a One Shot.

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Basic Operation of a 555 Timer

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  1. Basic Operation of a 555 Timer • Threshold • Control Voltage • Trigger • Discharge • Reset • Output

  2. Functional Diagram of 555 Timer

  3. The 555 Timer Connected as a One-shot. Figure 8--49

  4. One-shot Operationof the 555 timer. Figure 8--50

  5. 555 Timer as a One Shot tw = 1.1R1C1 = 1.1(2000)(1F) = 2.2ms

  6. 555 Timer as a One Shot waveform

  7. Astable operation of 555 Timer tH = .7 (R1+R2)C1 =2.1ms tL = .7R2C1 = 0.7ms

  8. Astable operation of 555 Timer

  9. Astable operation of 555 Timer

  10. Astable operation of 555 Timer

  11. Less Than 50% Duty Cycle. Figure 8--54

  12. Example 8-14. Figure 8--55

  13. Astable operation of 555 Timer waveform

  14. 555 Timer Datasheet

  15. 555 Timer Datasheet

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