Astable Multivibrator Using 555
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Circuit Description
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Design of Square wave of frequency 1 kHz with duty cycle 75%
T = 1/f = 1ms
Ton = 0.75 ms
Toff = 0.25 ms
Toff = 0.693*RB*C
Let C = 0.1 microFarad, Then
RB = 3607.5 Ohm = 3.61 kOhm
Ton = 0.693*(RA + RB)*C
Then
RA = 7215.01 Ohm = 7.215 kOhm
Creator
TonyAbyVarkey
235 Circuits
Date Created
4 years, 11 months ago
Last Modified
3 years, 11 months ago
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