Aug 2, 2017 #1 P pnsuresh Junior Member level 1 Joined Mar 30, 2017 Messages 18 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 138 Hi, Am design a digital weighing machine circuit based on AD620 instrumentation amplifier. kindly verify the circuit attachment. Loadcell : 0.6kg Excitation : 5 Vdc LCT china make Loadcell. Thanks, Suresh
Hi, Am design a digital weighing machine circuit based on AD620 instrumentation amplifier. kindly verify the circuit attachment. Loadcell : 0.6kg Excitation : 5 Vdc LCT china make Loadcell. Thanks, Suresh
Aug 2, 2017 #2 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,188 Helped 4,870 Reputation 9,761 Reaction score 5,547 Trophy points 1,393 Activity points 168,570 Hi, What is the nominal sensor output voltage at the given load? The excitation voltage precision will determine the measurement precision. Klaus
Hi, What is the nominal sensor output voltage at the given load? The excitation voltage precision will determine the measurement precision. Klaus
Aug 3, 2017 #3 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,435 Helped 14,752 Reputation 29,786 Reaction score 14,107 Trophy points 1,393 Location Bochum, Germany Activity points 298,167 The schematic ignores the necessity of keeping a defined AD620 common mode voltage range.
Aug 3, 2017 #4 P pnsuresh Junior Member level 1 Joined Mar 30, 2017 Messages 18 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 138 Thanks for your reply.Kindly, Suggest the circuit and ad620 voltage range. Simulation works fine. But, Hardware not working properly.
Thanks for your reply.Kindly, Suggest the circuit and ad620 voltage range. Simulation works fine. But, Hardware not working properly.
Aug 3, 2017 #5 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,188 Helped 4,870 Reputation 9,761 Reaction score 5,547 Trophy points 1,393 Activity points 168,570 Hi, But, Hardware not working properly. Click to expand... This is far away from a good error description. If you need help ... you should give more detailed informations Klaus
Hi, But, Hardware not working properly. Click to expand... This is far away from a good error description. If you need help ... you should give more detailed informations Klaus
Aug 4, 2017 #6 P pnsuresh Junior Member level 1 Joined Mar 30, 2017 Messages 18 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 138 Hi Klaus, Loadcell output voltage 2.2mV/200g weight.
Aug 4, 2017 #7 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,435 Helped 14,752 Reputation 29,786 Reaction score 14,107 Trophy points 1,393 Location Bochum, Germany Activity points 298,167 A useful circuit schematic would show the actual bridge and AD620 power supply and their relation.
Aug 11, 2017 #8 baileychic Advanced Member level 3 Joined Aug 2, 2017 Messages 728 Helped 56 Reputation 112 Reaction score 57 Trophy points 28 Activity points 7,033 Chinese Load Cell is 4 wire or 3 wire type ? 3 wire type are half bridge sensors and might need external 2x resistors to balance the bridge.
Chinese Load Cell is 4 wire or 3 wire type ? 3 wire type are half bridge sensors and might need external 2x resistors to balance the bridge.