My analog system outputs a value which is in the range of +- 3.5 V. Sometimes this output exceeds 3.5 V. I like my output be converted to 0 V whenever the output excceeds 4 V. What circuitry I need to do this task ? Thanks for the help.
Thanks guys. My output is DC. The rail on the chip is +- 12VDC. I, in fact, need a fast real-time response. The output will be the response of the core armature inside a LVDT (Linear Variable Displacement Transformer). Thanks for the help.
Hi Again. The current capability of the chip is very low. The output of my chip goes into an Op-Amp. I think this chip can only drive very small load.
I want the output be realtime. Meaning, if the output exceeds 4.5 VDC, then my output from the Op-Amp to be 0 V. And if the output is below 4.5 VDC, then my output from the Op-Amp to be the real output value, whatever it is.
The LVDT output is conditioned (convert from AC to DC, etc) by a AD598 chip. it is the output of the AD598 that I need to control. In fact what I am trying to do is rulling out a possible fault condition in LVDT. The fault condition is the short of exitation wires (hot to return). When this fault occurs, the output of my AD598 gets a value, which is always > than 4.5 VDC. The output of the AD598 is valid between +- 3.5 VDC. The output above + 4.5 VDC is invalid and I want to force the output of the AD598 to 0 V, when this invalidity happens. In case the fault (short) does not happen, I want to have my normal valid output. Thanks for the help.