-Pulse-width-multiplier


Posted on Apr 3, 2012

This circuit for multiplying the width of incoming pulses by a factor greater or less than unity is simple to build and has the feature that the multiplying factor can be selected IYJ adjusting one potentiometer only. The multiplying factor is determined by setting the potentiometer in the feedback of the 741 amplifier. The input pulses e1, width T and repetition period Tis used to trigger a sawtooth generator at its rising edges to produce the waveform e2 having a peak value of E volts.


-Pulse-width-multiplier
Click here to download the full size of the above Circuit.

This peak value is then sampled by the input pulses~to generate the pulse train e3 having an average value of e4 ( = E rln which is proportional to T and independent on T. The de voltage e4 is amplified by a factor k and compared with sawtooth waveform e2 giving output pulses of duration kr. The circuit is capable of operating over the frequency range 10 kHz-100kHz. Note that k should be chosen less than TIT to ensure accurate pulse-width multiplication.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Two sirens sound with ic 555
how to make simple active low pass
Servo Driver
tv transmitter circuit
monitor splitter
Module Project Template
Mains voltage bidirectional limit alarm protection circuit diagram
Chase circuit loop type lights
Hall IC element DN6839 dividing circuit diagram



Top