Nov 17, 2009 #1 L lego_tech Newbie level 3 Joined Nov 17, 2009 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,298 Hi Can anybody show me an similar example of this type of circuit?
Nov 17, 2009 #2 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 Re: A peak detector with reset The basic concept of opamp-based peak detector with reset (FET) can be found here: http://www.smithshardware.com/Project/Peak_Detectors.pdf To fulfil other requirements, you will have to add a current limiting resistor in series with the FET(reset) and re-calculate the value of the storage capacitor (that’s the 10mV/s) .. Rgds, IanP
Re: A peak detector with reset The basic concept of opamp-based peak detector with reset (FET) can be found here: http://www.smithshardware.com/Project/Peak_Detectors.pdf To fulfil other requirements, you will have to add a current limiting resistor in series with the FET(reset) and re-calculate the value of the storage capacitor (that’s the 10mV/s) .. Rgds, IanP
Nov 17, 2009 #3 L lego_tech Newbie level 3 Joined Nov 17, 2009 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,298 Re: A peak detector with reset Whats the formula to calculate the voltage across the capacitor to get 10mV? I am coming across too many formulas at the moment & the book does not explain it very well.
Re: A peak detector with reset Whats the formula to calculate the voltage across the capacitor to get 10mV? I am coming across too many formulas at the moment & the book does not explain it very well.
Nov 18, 2009 #4 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 Re: A peak detector with reset Try formula for discharging RC circuit .. and solve it for C .. t=1s Vo=1V V=Vo-10mV and R=1MΩ .. Rgds, IanP PS: keep in mind that q=V*C ..
Re: A peak detector with reset Try formula for discharging RC circuit .. and solve it for C .. t=1s Vo=1V V=Vo-10mV and R=1MΩ .. Rgds, IanP PS: keep in mind that q=V*C ..