Feb 6, 2008 #1 S sanna Member level 2 Joined Jul 19, 2007 Messages 49 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,658 Hi, I am thinking to use two sensors. One sensor detect a signal +motion and another sensor detect just motion. Is any way I can subtract these two signals? Thanks
Hi, I am thinking to use two sensors. One sensor detect a signal +motion and another sensor detect just motion. Is any way I can subtract these two signals? Thanks
Feb 6, 2008 #2 E Eugen_E Full Member level 6 Joined Nov 29, 2004 Messages 383 Helped 44 Reputation 86 Reaction score 11 Trophy points 1,298 Location Romania Activity points 2,862 Re: subtract a signal Please specify what you mean by signal+motion ? To subtract 2 signals, you can use an opamp - differential configuration: https://www.rfcafe.com/references/electrical/opamps.htm
Re: subtract a signal Please specify what you mean by signal+motion ? To subtract 2 signals, you can use an opamp - differential configuration: https://www.rfcafe.com/references/electrical/opamps.htm