{"version":"1.0","provider_name":"Brick&#039;R&#039;knowledge","provider_url":"https:\/\/www.brickrknowledge.eu\/es\/","title":"Timer astable - Brick&#039;R&#039;knowledge","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"S62Ft0DMkg\"><a href=\"https:\/\/www.brickrknowledge.eu\/es\/project\/timer-astable\/\">Timer astable<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.brickrknowledge.eu\/es\/project\/timer-astable\/embed\/#?secret=S62Ft0DMkg\" width=\"600\" height=\"338\" title=\"&#8220;Timer astable&#8221; &#8212; Brick&#039;R&#039;knowledge\" data-secret=\"S62Ft0DMkg\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\r\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/forum.brickrknowledge.com\/content\/uploads\/2016\/06\/13_1_2-1024x768.jpg","thumbnail_width":1024,"thumbnail_height":768,"description":"The operational amplier is also used to generate oscillations. The \u201eclock\u201c is a classic series circuit of capacitor and coil that is connected to the plus input and implements the feedback of the output to the input. The amplitude of the output voltage is determined by the potentiometer at the negative input and the amplication [&hellip;]"}