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| Load cell design, will this work ? |
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| opa627bm:
Hi all, I am trying to do a load module that is capable of doing 100~640A load step @ 1600A/us I am doing 16 individual load cells , and each of them is helping with 40A peak and ~ 10A TDC. 2 of the load cell will be grouped into a load bank, and we will have 8 load bank current reporting to the MCU(due to limited channel) I am trying to avoid using the summing amplifier at current sense stage (since i have to combine 2 current signals from the 2 CSR into 1 so i can report back to the MCU) and is trying to combine 2 load cells CSR reading through 1 current sense amplifier. My question is, will this work? will the 2 opamp fights eachother because one opamp can clearly affect the current sense read back , and thus cause another opamp to take action, and may ended up in oscillation ? thank you Regards, Li |
| Vovk_Z:
They won't fight. Here is some more information about fast electronic loads (maybe you've seen that): 1. Design a 100a active load to test power supplies 2. A Closed-Loop, Wideband, 100A Active Load |
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