PLL | Electronics › Electronics › PLL This topic has 1 reply, 2 voices, and was last updated 10 years, 8 months ago by khushi. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts April 4, 2014 at 3:45 pm #3018 zameerParticipant hi… How PLL lock the phase? April 5, 2014 at 3:59 am #11468 khushiParticipant hi zammer, First of all u need one X-or gate for comaring Frequency with reference i/p frequency. See below i have drawn block diagram wysiwyg_imageupload:12111: if any more doubt please feel to ask. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In