David VanHorn wrote: >>I agree, the 10F is overkill. They should just use a few TTL gates >>and a pair of 2N3904s. > > > > 12AX7 That would violate the requirement for LESS power consumption. R -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist