Frequency Divider Circuit Diagram
This is a
frequency divider circuit, or a circuit whose output frequency is a
fraction of the
frequency of its input. The main
component of this circuit is the 555, a versatile timer IC. In
this circuit, it is
configured as a monostable multivibrator, i.e., it will output a single
pulse at pin 3 every time its pin 2 is 'triggered' by a pulse.
The width of
the output pulse at pin 3 of the circuit above is defined by the product
of R1 and C1, i.e., increasing the value of R1C1 will increase the
output pulse width. Once the circuit above is triggered by a pulse at
pin 2, the pin 3 output pulse cycle defined by R1C1 will first have to
be completed before any subsequent pulses at pin 2 can trigger the
circuit again. R1C1 of the circuit above can therefore be adjusted to
define the number of input pulses equivalent to a single output pulse.
Thus, this circuit is in effect dividing the input frequency by an
integer.
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