Sunday, 20 November 2011

PULSE WIDTH MODULATOR


When the timer is connected in the monostable mode and triggered  with  a  continuous  pulse  train,  the  output  pulse width can be modulated by a signal applied to pin 5. Figure 1  shows  the  circuit,  and  in  Figure  2  are  some  waveform
examples.
VCC  = 5V
TIME = 0.2 ms/DIV.
RA  = 9.1kΩ
C = 0.01µF



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