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Student & Learning Zone - City & Guilds
hertz how to calculate
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 17734" data-attributes="member: 250"><p>Perhaps to explain a bit more in "long hand" if anyone trying get to grips with what all these bits mean....</p><p></p><p>Frequency: is the number of occurrences of a repeating event for a standard duration of time</p><p></p><p>Time: The standard SI unit of time is the second.</p><p></p><p>Period: This is the duration for one cycle of a repeating event.</p><p></p><p>so a frequency 500Hz is 500 cycles per second.</p><p></p><p>i.e. If you drew a graph for an ac voltage.. one cycle would:-</p><p></p><p>start at 0v to a positive peak then back to 0v then to a negative peak then back to 0v!</p><p></p><p>that is <strong>one duration of the event</strong>.. {the period}</p><p></p><p>if you get 500 of them per second then the duration of that one period is</p><p></p><p>1/500 = <strong>0.002 of a second</strong>.</p><p></p><p>or working backward if it takes 0.002 of a second for one period...</p><p></p><p>how many can you cram into 1 second?</p><p></p><p>1/0.002 = 500cycles per second {Hz}! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big grin :D" loading="lazy" data-shortname=":D" /> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 17734, member: 250"] Perhaps to explain a bit more in "long hand" if anyone trying get to grips with what all these bits mean.... Frequency: is the number of occurrences of a repeating event for a standard duration of time Time: The standard SI unit of time is the second. Period: This is the duration for one cycle of a repeating event. so a frequency 500Hz is 500 cycles per second. i.e. If you drew a graph for an ac voltage.. one cycle would:- start at 0v to a positive peak then back to 0v then to a negative peak then back to 0v! that is [B]one duration of the event[/B].. {the period} if you get 500 of them per second then the duration of that one period is 1/500 = [B]0.002 of a second[/B]. or working backward if it takes 0.002 of a second for one period... how many can you cram into 1 second? 1/0.002 = 500cycles per second {Hz}! ;) :D :D [/QUOTE]
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