Basic Operation of a 555 Timer Threshold Control Voltage Trigger Discharge Reset Output.
Basic Operation of a 555 Timer
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Basic Operation of a 555 Timer • Threshold • Control Voltage • Trigger • Discharge • Reset • Output
description
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. - PowerPoint PPT Presentation
Transcript of 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 Operationof the 555 timer. Figure 8--50
555 Timer as a One Shot
tw = 1.1R1C1 = 1.1(2000)(1F) = 2.2ms
555 Timer as a One Shot waveform
Astable operation of 555 Timer
tH = .7 (R1+R2)C1 =2.1ms tL = .7R2C1 = 0.7ms
Astable operation of 555 Timer
Astable operation of 555 Timer
Astable operation of 555 Timer
%1002
2
44.1
21
21
121
RR
RRDutyCycle
CRRf
Less Than 50% Duty Cycle. Figure 8--54
Example 8-14. Figure 8--55
%5.59%1004.92.2
7.42.2%100
2
64.5022.04.92.2
44.1
2
44.1
21
21
121
kk
kk
RR
RRDutyCycle
kHzFkkCRR
f
Astable operation of 555 Timer waveform
555 Timer Datasheet
555 Timer Datasheet
