Considering some of the posts I have seen here lately, I thought it might be a good idea to share this.  I wish I could take credit for it, but I didn't write it.  The author is listed at the bottom. Ten Commandments of Electronics   I.    Beware of the lightning that lurketh in an undischarged capacitor, lest it cause thee to be bounced on thy buttocks in a most ungentlemanly manner.   II.   Cause thou the switch that supplies large quantitites of juice to be opened and thusly tagged, so thy days may be long on this earthly vale of tears.   III.  Prove to thyself that all circuits that radiateth and upon which thou worketh are grounded, lest they lift thee to high-frequency potential and cause thee to radiateth also.   IV.   Take care that thou useth the proper method when thou taketh the measure of high-voltage circuits so that thou doth not incinerate both thee and the meter; for verily, though thou has no account number and can easily be replaced, the meter doth have one, and as a consequence, bringeth much woe unto the supply department.   V.    Tarry thou not amongst those who engage in intentional shocks, for they are surely nonbelievers and are not long for this world.   VI.   Take care thou tampereth not with interlocks and safety devices, for this will incur the wrath of thy seniors and bringeth the fury of the safety officer down about thy head and shoulders.   VII.  Work thou not on energized equipment, for if thy doeth, thy buddies will surely be buying beers for thy widow and consoling her in other ways not generally acceptable to thee.   VIII. Verily, verily I say unto thee, never service high-voltage equipment alone, for electric cooking is a slothful process and thou might sizzle in thine own fat for hours before thy Maker sees fit to drag thee unto His fold.   IX.   Trifle  thou not with radioactive tubes and substances lest thou commence to glow in the dark like a lightning bug, and thy wife be frustrated nightly and have no further use for thee except thy wage.   X.    Commit thou to memory the works of the prophets, which are written in the instruction books, which giveth the straight dope and which consoleth thee, and thou canst not make mistakes.   Hathery Electronics Rick Curl, Chief Engineer Product Design -- Research -- Development Computer-Aided Schematic Capture -- Computer Aided Printed Circuit Layout PO Box 191 Birmingham Al 35201 205 681 9999