Simple Pulse Generator

Posted on Feb 5, 2014

A Pulse generator usually allows control of the pulse repetition rate, pulse width, pulse delay and pulse amplitude. More sophisticated pulse generators may allow control over the rise time and fall time of the pulses. A pulse generator`s delay is measured with respect to an internal or external trigger. The pulse generator`s rate may be determine

Simple Pulse Generator
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d by a frequency or period adjust (rep rate). Pulse generators may use digital techniques, analog techniques, or a combination of both techniques to form the output pulses. For example, the pulse repetition rate and duration may be digitally controlled but the pulse amplitude and rise and fall times may be determined by analog circuitry in the output stage of the pulse generator. With correct adjustment, a pulse generator can also produce a 50% duty cycle square wave. Pulse generators are generally single-channel providing one frequency, delay, width and output. To produce multiple pulses, these simple pulse generators would have to be ganged in series or in parallel. Some Pulse Generators like the BNC Model DB-2 Random pulse generator simulate actual operating conditions without requiring a live source and detector combination. Such parameters as frequency response, linearity, and discrimination levels may easily be measured without the inconvenience of dim oscilloscope display or long accumulation times by a pulse generator. Proper operation of baseline restorer circuits may be quickly verified. Scalers and ratemeters may be checked for satisfactory pulse recognition under random pulse (each pulse generator may be equipped with different capabilities and features). The negligible amplitude shift with frequency of the pulser (pulse generator) makes the standard frequency test using a live source and a low rate precision...

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