Peter, I'm guessing, but the flashing of the CFLs is probably due to the internal HV being pumped up by the leakage current. Placing a high value resistor across the lamp _may_ be enough to stop it flashing. RP On 23/07/07, Peter P. wrote: > MOC3030, 3040 zero cross switches > > Peter P. > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist