{"id":573,"date":"2026-10-03T14:43:33","date_gmt":"2026-10-03T13:43:33","guid":{"rendered":"https:\/\/wpcalc.com\/tr\/ne555-astable-devre\/"},"modified":"2026-10-03T14:43:33","modified_gmt":"2026-10-03T13:43:33","slug":"ne555-astable-devre","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/tr\/muhendislik\/ne555-astable-devre\/","title":{"rendered":"NE555 Zamanlay\u0131c\u0131 Astable Devre Hesaplay\u0131c\u0131"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">NE555 i\u00e7in Astable Osilat\u00f6r Zamanlama De\u011ferleri<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"573\" data-favorite-title=\"NE555 Zamanlay\u0131c\u0131 Astable Devresi\" data-favorite-url=\"https:\/\/wpcalc.com\/tr\/muhendislik\/ne555-astable-devre\/\" data-favorite-excerpt=\"NE555 astable devresinin frekans\u0131n\u0131, periyodunu, y\u00fcksek\/d\u00fc\u015f\u00fck s\u00fcresini ve g\u00f6rev d\u00f6ng\u00fcs\u00fcn\u00fc hesaplay\u0131n. LED fla\u015f\u00f6rler, ses \u00fcrete\u00e7leri ve saat osilat\u00f6rleri tasarlamak i\u00e7in R1, R2 ve zamanlama kondansat\u00f6r\u00fcn\u00fc girin.\" aria-label=\"Favorilere ekle\" data-favorite-icon=\"icon icon-electrical\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/tr\/muhendislik\/ne555-astable-devre\/\" method=\"POST\" class=\"calculator\" id=\"calculator-573\" data-post=\"573\"><fieldset class=\"fieldset-input\"><legend class=\"sr-only\">Giri\u015f alanlar\u0131<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">Diren\u00e7 1<\/label><div class=\"term\">R\u2081<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"diren_1\" id=\"field-1\" aria-describedby=\"calc-unit-1 calc-info-1\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0.1\" value=\"1000\"\/><div class=\"unit\" id=\"calc-unit-1\">\u03a9<\/div><small id=\"calc-info-1\">Vcc ile bo\u015faltma (discharge) pini aras\u0131ndaki diren\u00e7<\/small><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-2\">Diren\u00e7 2<\/label><div class=\"term\">R\u2082<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"diren_2\" id=\"field-2\" aria-describedby=\"calc-unit-2 calc-info-2\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"0.1\" value=\"1000\"\/><div class=\"unit\" id=\"calc-unit-2\">\u03a9<\/div><small id=\"calc-info-2\">Bo\u015faltma (discharge) ile e\u015fik (threshold) pini aras\u0131ndaki diren\u00e7<\/small><\/div><div class=\"field has-term\" id=\"input-3\"><label for=\"field-3\">Kondansat\u00f6r C<\/label><div class=\"term\">C<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"text\" name=\"kondansatr_c\" id=\"field-3\" aria-describedby=\"calc-unit-3 calc-info-3\" data-number inputmode=\"decimal\" autocomplete=\"off\" spellcheck=\"false\" min=\"1.0E-6\" value=\"1\"\/><div class=\"unit\" id=\"calc-unit-3\">\u00b5F<\/div><small id=\"calc-info-3\">E\u015fik (threshold) pini ile toprak aras\u0131na ba\u011flanan kondansat\u00f6r<\/small><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Yeniden hesapla\" id=\"calculate-button\" data-post=\"573\">Hesapla<\/button><button type=\"reset\">S\u0131f\u0131rla<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Otomatik hesapla<\/label><small>Etkinle\u015ftirilirse, herhangi bir de\u011feri de\u011fi\u015ftirdi\u011finizde sonu\u00e7 otomatik olarak g\u00fcncellenir.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Sonu\u00e7lar\u0131n\u0131z<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>Y\u00fcksek S\u00fcre<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"ms\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Sonucu kopyala\" aria-label=\"Sonucu kopyala\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-2\"><span class=\"field-title\"><span>D\u00fc\u015f\u00fck S\u00fcre<\/span><\/span><span class=\"field-value\" id=\"result-2\" data-unit=\"ms\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Sonucu kopyala\" aria-label=\"Sonucu kopyala\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-3\"><span class=\"field-title\"><span>Toplam Periyot<\/span><\/span><span class=\"field-value\" id=\"result-3\" data-unit=\"ms\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Sonucu kopyala\" aria-label=\"Sonucu kopyala\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-4\"><span class=\"field-title\"><span>Frekans<\/span><\/span><span class=\"field-value\" id=\"result-4\" data-unit=\"Hz\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Sonucu kopyala\" aria-label=\"Sonucu kopyala\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-5\"><span class=\"field-title\"><span>G\u00f6rev D\u00f6ng\u00fcs\u00fc<\/span><\/span><span class=\"field-value\" id=\"result-5\" data-unit=\"%\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Sonucu kopyala\" aria-label=\"Sonucu kopyala\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Bu hesaplaman\u0131n ba\u011flant\u0131s\u0131n\u0131 kopyala<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Yorum b\u0131rak<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"573\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">Bu sonu\u00e7 hakk\u0131nda ne d\u00fc\u015f\u00fcn\u00fcyorsunuz?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Be\u011fendim <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">Faydal\u0131 <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Kafam kar\u0131\u015ft\u0131 <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Hayal k\u0131r\u0131kl\u0131\u011f\u0131 <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Hatal\u0131 <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>NE555 Astable Devre Form\u00fcl\u00fc<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Form\u00fcl<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[ T_{high} = 0.693\\,(R_1 + R_2)\\,C \\qquad T_{low} = 0.693\\,R_2\\,C \\\\ T = 0.693\\,(R_1 + 2R_2)\\,C \\qquad f = \\frac{1}{T} = \\frac{1.44}{(R_1 + 2R_2)\\,C} \\\\ \\text{G\u00f6rev d\u00f6ng\u00fcs\u00fc (\\%)} = \\frac{R_1 + R_2}{R_1 + 2R_2} \\times 100 \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>Burada:<\/strong><\/p>\n<ul>\n<li>\\(T_{high}\\) \u2014 \\(C\\), \\(R_1 + R_2\\) \u00fczerinden \u015farj olurken \u00e7\u0131k\u0131\u015f\u0131n y\u00fcksek kald\u0131\u011f\u0131 s\u00fcre (s)<\/li>\n<li>\\(T_{low}\\) \u2014 \\(C\\), \\(R_2\\) \u00fczerinden de\u015farj olurken \u00e7\u0131k\u0131\u015f\u0131n d\u00fc\u015f\u00fck kald\u0131\u011f\u0131 s\u00fcre (s)<\/li>\n<li>\\(T\\) \u2014 bir sal\u0131n\u0131m \u00e7evriminin toplam periyodu (s)<\/li>\n<li>\\(f\\) \u2014 \u00e7\u0131k\u0131\u015f frekans\u0131 (Hz)<\/li>\n<li>\\(R_1\\) \u2014 Vcc ile de\u015farj pini aras\u0131ndaki diren\u00e7 (\u03a9)<\/li>\n<li>\\(R_2\\) \u2014 de\u015farj ve e\u015fik pinleri aras\u0131ndaki diren\u00e7 (\u03a9)<\/li>\n<li>\\(C\\) \u2014 e\u015fik pini ile toprak aras\u0131ndaki zamanlama kondansat\u00f6r\u00fc (F)<\/li>\n<\/ul>\n<p>0,693 sabiti \\(\\ln 2\\)'dir: kondansat\u00f6r, \\(R_1 + R_2\\) \u00fczerinden \\(\\tfrac{1}{3}V_{cc}\\)'den \\(\\tfrac{2}{3}V_{cc}\\)'ye kadar \u015farj olur ve \\(R_2\\) \u00fczerinden ayn\u0131 aral\u0131kta de\u015farj olur; her iki ge\u00e7i\u015f de \u00fcstel bir RC e\u011frisini izler.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-2\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>NE555 Zamanlay\u0131c\u0131 Astable Devresi \u2013 Hesaplama \u00d6rne\u011fi<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>\u00d6rnek:<\/strong> \\(R_1 = 1\\,\\text{k}\\Omega\\), \\(R_2 = 1\\,\\text{k}\\Omega\\) ve \\(C = 1\\,\\mu\\text{F} = 0.000001\\) F de\u011ferlerine sahip bir NE555 astable osilat\u00f6r \u2014 hesaplay\u0131c\u0131n\u0131n varsay\u0131lan de\u011ferleri.<\/p>\n<p>\\[ T_{high} = 0.693 \\cdot (1000 + 1000) \\cdot 0.000001 = 0.001386\\ \\text{s} = 1.386\\ \\text{ms} \\]<\/p>\n<p>\\[ T_{low} = 0.693 \\cdot 1000 \\cdot 0.000001 = 0.000693\\ \\text{s} = 0.693\\ \\text{ms} \\]<\/p>\n<p>\\[ T = 1.386 + 0.693 = 2.079\\ \\text{ms}, \\qquad f = \\frac{1}{0.002079} \\approx 481\\ \\text{Hz} \\]<\/p>\n<p>\\[ \\text{G\u00f6rev d\u00f6ng\u00fcs\u00fc} = \\frac{1.386}{2.079} \\times 100 \\approx 66.67\\% \\]<\/p>\n<p><strong>Sonu\u00e7:<\/strong> \u00e7\u0131k\u0131\u015f, 2,079 ms periyotlu, yakla\u015f\u0131k 481 Hz frekansl\u0131, 1,386 ms y\u00fcksek ve 0,693 ms d\u00fc\u015f\u00fck kalan, %66,67 g\u00f6rev d\u00f6ng\u00fcs\u00fc veren kareye yak\u0131n bir dalgad\u0131r.<\/p>\n<p>\n\r\n<\/section>\n<h2>Hesaplay\u0131c\u0131 nas\u0131l kullan\u0131l\u0131r?<\/h2>\n<ol>\n<li>Vcc ile de\u015farj pini (pin 7) aras\u0131ndaki direnci ohm cinsinden <strong>Diren\u00e7 1<\/strong> alan\u0131na girin.<\/li>\n<li>De\u015farj pini ile e\u015fik pini (birbirine ba\u011fl\u0131 pin 6 ve pin 2) aras\u0131ndaki direnci ohm cinsinden <strong>Diren\u00e7 2<\/strong> alan\u0131na girin.<\/li>\n<li>E\u015fik pini ile toprak aras\u0131na ba\u011flanan zamanlama kondansat\u00f6r\u00fcn\u00fc mikrofarad cinsinden <strong>Kondansat\u00f6r C<\/strong> alan\u0131na girin.<\/li>\n<li>Sonu\u00e7lar\u0131 okuyun: <strong>Y\u00fcksek S\u00fcre<\/strong> ve <strong>D\u00fc\u015f\u00fck S\u00fcre<\/strong> milisaniye cinsinden, <strong>Toplam Periyot<\/strong> milisaniye cinsinden, <strong>Frekans<\/strong> hertz cinsinden ve <strong>G\u00f6rev D\u00f6ng\u00fcs\u00fc<\/strong> y\u00fczde cinsinden verilir.<\/li>\n<\/ol>\n<h2>NE555 astable devresi nedir?<\/h2>\n<p>NE555 klasik zamanlay\u0131c\u0131 entegre devresidir ve astable mod, onun serbest \u00e7al\u0131\u015fan osilat\u00f6r yap\u0131land\u0131rmas\u0131d\u0131r. Tetiklendi\u011finde tek bir darbe \u00fcreten monostable modun aksine, astable devrenin kararl\u0131 bir durumu yoktur: \u00e7\u0131k\u0131\u015f, herhangi bir harici tetikleyiciye gerek duymadan s\u00fcrekli olarak y\u00fcksek ve d\u00fc\u015f\u00fck aras\u0131nda ge\u00e7i\u015f yapar ve dikd\u00f6rtgen bir dalga \u00fcretir. Bu \u00f6zellik, bir avu\u00e7 bile\u015fenle osilat\u00f6r kurman\u0131n en basit ve en g\u00fcvenilir yollar\u0131ndan biri olmas\u0131n\u0131 sa\u011flar.<\/p>\n<p>Devre, zamanlama kondansat\u00f6r\u00fc \\(C\\)'yi, i\u00e7 diren\u00e7 b\u00f6l\u00fcc\u00fc taraf\u0131ndan \\(\\tfrac{1}{3}V_{cc}\\) ve \\(\\tfrac{2}{3}V_{cc}\\) de\u011ferlerine ayarlanan iki i\u00e7 e\u015fik aras\u0131nda s\u00fcrekli \u015farj edip de\u015farj ederek \u00e7al\u0131\u015f\u0131r. Kondansat\u00f6r, seri ba\u011fl\u0131 \\(R_1\\) ve \\(R_2\\) \u00fczerinden \u015farj olur; bu nedenle y\u00fcksek s\u00fcre her iki dirence de ba\u011fl\u0131d\u0131r. Kondansat\u00f6r \\(\\tfrac{2}{3}V_{cc}\\)'ye ula\u015ft\u0131\u011f\u0131nda de\u015farj pini (pin 7) ak\u0131m \u00e7eker ve kondansat\u00f6r yaln\u0131zca \\(R_2\\) \u00fczerinden de\u015farj olur; d\u00fc\u015f\u00fck s\u00fcrenin yaln\u0131zca \\(R_2\\)'ye ba\u011fl\u0131 olmas\u0131n\u0131n nedeni budur.<\/p>\n<p>Sonu\u00e7lar\u0131 yorumlamak kolayd\u0131r: frekans, \u00e7\u0131k\u0131\u015f\u0131n saniyede ka\u00e7 darbe \u00fcretti\u011fini; g\u00f6rev d\u00f6ng\u00fcs\u00fc ise her \u00e7evrimin ne kadarl\u0131k b\u00f6l\u00fcm\u00fcnde \u00e7\u0131k\u0131\u015f\u0131n y\u00fcksek kald\u0131\u011f\u0131n\u0131 s\u00f6yler. %50 g\u00f6rev d\u00f6ng\u00fcs\u00fc simetrik bir kare dalga verir ve dijital mant\u0131\u011f\u0131 saatlemek i\u00e7in idealdir. Daha y\u00fcksek g\u00f6rev d\u00f6ng\u00fcleri daha uzun y\u00fcksek darbeler anlam\u0131na gelir; bu, LED karartma ya da \u00e7o\u011funlukla a\u00e7\u0131k s\u00fcrme gerektiren y\u00fcklerin s\u00fcr\u00fclmesi i\u00e7in yararl\u0131d\u0131r. \\(R_1\\) yaln\u0131zca y\u00fcksek s\u00fcreye eklendi\u011finden, standart bir astable devrenin g\u00f6rev d\u00f6ng\u00fcs\u00fc her zaman %50'den b\u00fcy\u00fckt\u00fcr.<\/p>\n<p>Tipik uygulamalar aras\u0131nda LED fla\u015f\u00f6rler ve darbe \u00fcrete\u00e7leri, ses tonu \u00fcrete\u00e7leri ve sirenler (NE555, yakla\u015f\u0131k 100 kHz'e kadar olan ses aral\u0131\u011f\u0131n\u0131 rahatl\u0131kla kapsar), saya\u00e7lar ve kayd\u0131rma yazma\u00e7lar\u0131 i\u00e7in saat kaynaklar\u0131 ile basit PWM tarz\u0131 parlakl\u0131k veya h\u0131z kontrol\u00fc yer al\u0131r.<\/p>\n<h2>Varsay\u0131mlar, s\u0131n\u0131rlamalar ve pratik ipu\u00e7lar\u0131<\/h2>\n<ul>\n<li><strong>G\u00f6rev d\u00f6ng\u00fcs\u00fc %50'nin \u00fczerinde.<\/strong> Standart yap\u0131land\u0131rmada g\u00f6rev d\u00f6ng\u00fcs\u00fc %50'ye d\u00fc\u015femez ya da alt\u0131na inemez, \u00e7\u00fcnk\u00fc kondansat\u00f6r her zaman \\(R_1 + R_2\\) \u00fczerinden \u015farj olur ama yaln\u0131zca \\(R_2\\) \u00fczerinden de\u015farj olur. %50'ye ula\u015fmak i\u00e7in \\(R_2\\) \u00fczerine bir diyot ekleyerek kondansat\u00f6r\u00fcn yaln\u0131zca \\(R_1\\) \u00fczerinden \u015farj olmas\u0131n\u0131 sa\u011flayabilirsiniz \u2014 ancak bu hesaplay\u0131c\u0131n\u0131n bu de\u011fi\u015fikli\u011fi modellemedi\u011fini unutmay\u0131n.<\/li>\n<li><strong>\u0130deal bile\u015fen de\u011ferleri.<\/strong> Hesaplama, tam diren\u00e7 ve kondansat\u00f6r de\u011ferleri ile ideal bir entegre varsayar. Ger\u00e7ek bile\u015fenlerin toleranslar\u0131 vard\u0131r (kondansat\u00f6rlerde \u00e7o\u011fu zaman \u00b1%5\u201320), bu nedenle \u00f6l\u00e7\u00fclen frekanslar belirgin bi\u00e7imde sapabilir. Hassas zamanlama i\u00e7in %1 toleransl\u0131 diren\u00e7ler ve film veya C0G\/NP0 kondansat\u00f6r kullan\u0131n ya da \\(R_2\\) i\u00e7in bir trimpot ekleyin.<\/li>\n<li><strong>\\(R_1\\)'i makul \u00f6l\u00e7\u00fcde b\u00fcy\u00fck tutun.<\/strong> \\(R_1\\), pin 7 d\u00fc\u015ft\u00fc\u011f\u00fcnde de\u015farj transist\u00f6r\u00fcn\u00fcn \u00e7ekmesi gereken ak\u0131m\u0131 s\u0131n\u0131rlar. Yakla\u015f\u0131k 1 k\u03a9'un alt\u0131ndaki de\u011ferler, 5 V beslemede de\u015farj pinini a\u015f\u0131r\u0131 y\u00fckleyebilir; \\(R_1\\)'i yakla\u015f\u0131k 1 k\u03a9 ile 1 M\u03a9 aras\u0131nda tutun ve bipolar NE555 i\u00e7in toplam \\(R_1 + R_2\\) de\u011ferini yakla\u015f\u0131k 3,3 M\u03a9'un alt\u0131nda tutun (TLC555 gibi CMOS varyantlar daha y\u00fcksek diren\u00e7lere ve daha d\u00fc\u015f\u00fck g\u00fc\u00e7 t\u00fcketimine izin verir).<\/li>\n<li><strong>Frekans aral\u0131\u011f\u0131.<\/strong> Bipolar NE555, 1 Hz'in \u00e7ok alt\u0131ndan yakla\u015f\u0131k 300\u2013500 kHz'e kadar pratiktir; bunun \u00fczerinde yay\u0131lma gecikmeleri zamanlamay\u0131 bozar. \u00c7ok d\u00fc\u015f\u00fck frekanslar i\u00e7in, ka\u00e7ak ak\u0131m\u0131 e\u015fikleri bozabilen elektrolitik kondansat\u00f6r yerine b\u00fcy\u00fck diren\u00e7 ve k\u00fc\u00e7\u00fck kondansat\u00f6r tercih edin.<\/li>\n<li><strong>Besleme filtreleme.<\/strong> Entegrenin besleme pinlerinin yan\u0131na 100 nF'lik bir seramik kondansat\u00f6r yerle\u015ftirin ve i\u00e7 e\u015fikleri dengelemek i\u00e7in iste\u011fe ba\u011fl\u0131 olarak kontrol gerilimi pinine (pin 5) 10 nF'l\u0131k bir kondansat\u00f6r ekleyin.<\/li>\n<\/ul>\n<p>Ayn\u0131 kaynaktan ba\u015fka devre b\u00f6l\u00fcmleri de besliyorsan\u0131z, ak\u0131m s\u0131n\u0131rlama diren\u00e7lerini <a href=\"https:\/\/wpcalc.com\/tr\/muhendislik\/zener-diyot-direnci\/\">Zener Diyot Diren\u00e7 Hesaplay\u0131c\u0131m\u0131zla<\/a> kontrol etmeniz ya da frekans\u0131 trimpot olmadan ince ayarlamak i\u00e7in zamanlama diren\u00e7lerini <a href=\"https:\/\/wpcalc.com\/tr\/muhendislik\/paralel-direnc-hesaplama\/\">Paralel Diren\u00e7 Hesaplay\u0131c\u0131yla<\/a> birle\u015ftirmeniz de faydal\u0131 olabilir.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NE555 astable devresinin frekans\u0131n\u0131, periyodunu, y\u00fcksek\/d\u00fc\u015f\u00fck s\u00fcresini ve g\u00f6rev d\u00f6ng\u00fcs\u00fcn\u00fc hesaplay\u0131n. LED fla\u015f\u00f6rler, ses \u00fcrete\u00e7leri ve saat osilat\u00f6rleri tasarlamak i\u00e7in R1, R2 ve zamanlama kondansat\u00f6r\u00fcn\u00fc girin.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6],"tags":[35],"class_list":["post-573","post","type-post","status-publish","format-standard","hentry","category-muhendislik","tag-elektrik"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/posts\/573","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/users\/3168"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/comments?post=573"}],"version-history":[{"count":3,"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/posts\/573\/revisions"}],"predecessor-version":[{"id":3444,"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/posts\/573\/revisions\/3444"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/media?parent=573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/categories?post=573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/tr\/wp-json\/wp\/v2\/tags?post=573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}