Hi How to calculate capacitor's value that function as a current limiter? I want to use mains ac (transformer less) to operate a small circuit. the circuit draw about 30mA. Can any one help me with the formula? Regards Tal "I have not failed. I've just found 10,000 ways that won't work." Thomas Edison -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body