{"id":9667,"date":"2021-01-18T19:55:19","date_gmt":"2021-01-18T19:55:19","guid":{"rendered":"https:\/\/stevepedwards.today\/ElectronicsStuff\/?p=9667"},"modified":"2021-01-22T00:20:59","modified_gmt":"2021-01-22T00:20:59","slug":"sine-gens-total-harmonic-distortion-on-dso5102p","status":"publish","type":"post","link":"https:\/\/stevepedwards.today\/ElectronicsStuff\/sine-gens-total-harmonic-distortion-on-dso5102p\/","title":{"rendered":"Home Built Sine Gens Total Harmonic Distortion on DSO5102P"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-9664\" src=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/MCLgen-1024x576.jpg\" alt=\"\" width=\"840\" height=\"473\" srcset=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/MCLgen-1024x576.jpg 1024w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/MCLgen-300x169.jpg 300w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/MCLgen-768x432.jpg 768w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/MCLgen.jpg 1040w\" sizes=\"auto, (max-width: 840px) 100vw, 840px\" \/><\/p>\n<p>With a small Realistic tweeter replacing the failed bulb (that supplies a Positive Temp Coefficient resistance for amplitude stability normally), it still gives a very pure sine of 878Hz or so with a no 2nd order harmonic at 928mV pp, but a fraction off distortion and lost signal at +\/-10.6V DC:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-9671\" src=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/IMG_20210118_200757196-1024x576.jpg\" alt=\"\" width=\"840\" height=\"473\" srcset=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/IMG_20210118_200757196-1024x576.jpg 1024w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/IMG_20210118_200757196-300x169.jpg 300w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/IMG_20210118_200757196-768x432.jpg 768w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/IMG_20210118_200757196.jpg 1040w\" sizes=\"auto, (max-width: 840px) 100vw, 840px\" \/><\/p>\n<p>Depending on voltage and resistor setting, THD is:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-9672\" src=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/2ndorder-1024x576.jpg\" alt=\"\" width=\"840\" height=\"473\" srcset=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/2ndorder-1024x576.jpg 1024w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/2ndorder-300x169.jpg 300w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/2ndorder-768x432.jpg 768w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/2ndorder.jpg 1040w\" sizes=\"auto, (max-width: 840px) 100vw, 840px\" \/><\/p>\n<p><iframe loading=\"lazy\" title=\"Wien bridge @ 880 Hz sine gen\" width=\"1333\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/Z0dws-pIk6M?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>The next build is about the most basic you can get, but works great!:<\/p>\n<p><iframe loading=\"lazy\" title=\"Easy sine wave generator that did not always work (why? basics + remedies in the description)\" width=\"1333\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/3ih2y4TloNg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-9659\" src=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/1kHzGen-1024x576.jpg\" alt=\"\" width=\"840\" height=\"473\" srcset=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/1kHzGen-1024x576.jpg 1024w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/1kHzGen-300x169.jpg 300w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/1kHzGen-768x432.jpg 768w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/1kHzGen.jpg 1040w\" sizes=\"auto, (max-width: 840px) 100vw, 840px\" \/><\/p>\n<p><iframe loading=\"lazy\" title=\"1kHz Sine Oscillator\" width=\"1333\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/cEb-_pMrSAk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>is this build (I used a 15k not 12k):<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9635\" src=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/sine.png\" alt=\"\" width=\"675\" height=\"423\" srcset=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/sine.png 675w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/sine-300x188.png 300w\" sizes=\"auto, (max-width: 675px) 100vw, 675px\" \/><\/p>\n<p>gives a nice sine at 1000 Hz, but with 3rd order harmonics at 2Vpp - still good!:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-9676\" src=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/3rdOrder-1024x576.jpg\" alt=\"\" width=\"840\" height=\"473\" srcset=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/3rdOrder-1024x576.jpg 1024w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/3rdOrder-300x169.jpg 300w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/3rdOrder-768x432.jpg 768w, https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-content\/uploads\/2021\/01\/3rdOrder.jpg 1040w\" sizes=\"auto, (max-width: 840px) 100vw, 840px\" \/><\/p>\n<p>F = 1\/ 2 Pi RC<\/p>\n<p>100nF = 0.1uF = 0.0000001F<\/p>\n<p>1\/2 Pi x 1000 Ohms x 0.0000001F = 1 \/-\u00a0 6.28 x 0.0001 = 1591.5 Hz<\/p>\n","protected":false},"excerpt":{"rendered":"<p>With a small Realistic tweeter replacing the failed bulb (that supplies a Positive Temp Coefficient resistance for amplitude stability normally), it still gives a very pure sine of 878Hz or so with a no 2nd order harmonic at 928mV pp, but a fraction off distortion and lost signal at +\/-10.6V DC: Depending on voltage and <a href=\"https:\/\/stevepedwards.today\/ElectronicsStuff\/sine-gens-total-harmonic-distortion-on-dso5102p\/\" class=\"more-link\">...<span class=\"screen-reader-text\">  Home Built Sine Gens Total Harmonic Distortion on DSO5102P<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9667","post","type-post","status-publish","format-standard","hentry","category-uncategorised"],"_links":{"self":[{"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/posts\/9667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/comments?post=9667"}],"version-history":[{"count":8,"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/posts\/9667\/revisions"}],"predecessor-version":[{"id":9688,"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/posts\/9667\/revisions\/9688"}],"wp:attachment":[{"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/media?parent=9667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/categories?post=9667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stevepedwards.today\/ElectronicsStuff\/wp-json\/wp\/v2\/tags?post=9667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}