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555 Astable Oscillator Frequency and Duty Cycle Diagram for

2016-08-14 02:09  
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555 Astable Oscillator Frequency and Duty Cycle Diagram for Quick Search
The circuit diagram and waveform of the astable multi-vibrator have been shown in picture 3-1.THey can be calculated according to the following formula: f=1.433/(Ra+2Rb)C D=t1/t=(Ra+Rb)/(Ra+2Rb) In order to simplify, speed up, and convenience the procedure of debugging and designing the circuit, the relationship curve series between multi-vibrator’s oscillation and frequency f(Hz), capacitance C(μF) and (RA+2Rb)(Ω)has been illustrated in picture 3-2(a); The relationship curve series between time resistance, Ra, Rb and duty cycle has been shown in picture 3-2(b).