Need to limit current to maximum 1.6A
Others have questioned whether current limiting is what you really need. Assuming that limiting the current is what you actually need, this circuit will limit your load current to 1.6A. R1 should be rated a minimum of 2W. Choosing a larger resistance value will reduce the maximum current. The voltage seen by the load will be less than the supply voltage, and will vary depending upon the size of your load. As others have suggested, maybe your load only draws so much current on its own, and current regulation is not what you need. But here it is anyway.



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