Aeagle.182 net.jokes utzoo!decvax!ucbvax!mhtsa!eagle!wdr Thu Jan 14 18:44:14 1982 EE do its Transformers do it by coupling; Oscillators do it repeatedly; Schmitt triggers do it only once (*sigh*); Inductors dissipate after doing it; Good power supplies do it with high regularity; Bus masters do it with slaves.