1.0Circuit Globehttps://circuitglobe.comArchana Thttps://circuitglobe.com/author/authorrich600338<blockquote class="wp-embedded-content" data-secret="q0vwina6XX"><a href="https://circuitglobe.com/difference-between-photodiode-and-phototransistor.html">Difference Between Photodiode & Phototransistor</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://circuitglobe.com/difference-between-photodiode-and-phototransistor.html/embed#?secret=q0vwina6XX" width="600" height="338" title="“Difference Between Photodiode & Phototransistor” — Circuit Globe" data-secret="q0vwina6XX" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(c,d){"use strict";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),l=0;l<n.length;l++)n[l].style.display="none";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=d.createElement("a"),a=d.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),d.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> One of the major differences between the photodiode and the photo-transistor is that the photodiode uses PN-junction diode which converts the light energy into an electric current, whereas the phototransistor uses the ordinary transistor (NPN transistor) for the conversion of light into the current. Some other differences between the photodiode and phototransistor are shown in the comparison chart.https://circuitglobe.com/wp-content/uploads/2017/06/circuit-of-phot-diode.jpg