Square-wave relaxation oscillators are used to provide the clock signal for sequential logic circuits such as timers and dual slope analog to digital converters ( ADCs ), and in function generators to generate square and triangle waves for testing equipment.
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The FHN Model is an example of a relaxation oscillator because, if the external stimulus I _ { \ text { ext } } exceeds a certain threshold value, the system will exhibit a characteristic excursion in phase space, before the variables v and w relax back to their rest values.
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This means that the capacitance equals the current divided by the rate of change of voltage across the capacitor . ) The capacitance can be calculated by measuring the charging time required to reach the threshold voltage ( of the relaxation oscillator ), or equivalently, by measuring the oscillator's frequency.
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Piro is known for work including his studies of forced relaxation oscillators such as the exactly-solvable PiroGon oscillator, the dynamics of passive scalars in fluid flows, bailout embeddings, the influence of fluid mechanics on the development of vertebrate left-right asymmetry, and the self-tuned critical network model
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Otherwise, some sort of relaxation oscillator would be useful so you can have repetitive events . ( In some old'scopes, the horizontal trace signal was externally available and could be used ! ) Given an impulse, I guess you could evaluate the self-resonant frequency based on provoking ringing of the inductor; we used to test " flyback " transformers ( television Horizontal output transformers ) in that way.
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:: : : : The igniter on a residential gas stove ( cooker ) "'isn't "'piezoelectric . ( Outdoor barbecues where you push the red button and it clicks are the peizo ones . ) Instead, the igniter takes mains electricity, runs it through a series if switches ( one per gas tap / valve, with all the switches arranged in SCR-based relaxation oscillator.
