Multiplying pulse widths circuit


Posted on Mar 27, 2013

A 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 by adjusting one potentiometer only. The multiplying factor is determined by setting the potentiometer in the feedback of a 741 amplifier. The input pulses of width r and repetition period is used to trigger a sawtooth generator at its rising edges to produce the waveform e2 having a peak value of (E) volt.


Multiplying pulse widths circuit
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(= t/) which is proportional to t and independent on T. The dc voltage e4 is amplified by a factor k and compared with sawtooth waveform e2 giving output pulses of duration k t. The circuit is capable of operating over the frequency range 10 kHz - 100 kHz.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Parametric SubWoofer Equaliser
Remote controlled LED
Low voltage flasher
Battery Level Monitor Circuit
switch mode power supply What does frequency foldback do in a switching regulator
simple water level buzzer circuit
Electronic Lamp Dimmer Circuit
High-Voltage Regulator With Short Circuit Protection
Mini Guitar/Bass Amplifier
An Audible Field Strength Indicator for Radio Direction Finding
HELIUM NEON LASER PS WITH HV PULSE IGNITION
A combination of common-source grounded base amplifier formed by cascaded amplifier



Top