yhu@umbc5.umbc.edu (Mr. Ying Hu; CMSC (GRAD)) (08/14/90)
I need somebody to help me with this choke color code. the color stripes are: green yellow red gold gold On my schemetic diagram it was labeled as 5.4 mH, but on the parts list it was 5.4 uH. And I don't know what the first gold color means. Thanks in advance.
myers@hpfcdj.HP.COM (Bob Myers) (08/16/90)
>green >yellow >red >gold >gold > >On my schemetic diagram it was labeled as 5.4 mH, but on the parts list >it was 5.4 uH. And I don't know what the first gold color means. >Thanks in advance. As you've no doubt noticed, the first three match the good ol' resistor color code (green = 5, yellow = 4, etc.). Given that red = 2 in this code, I'd wager that the value given is in uH - which means it's a 5.4 mH part (5400 uH = 5.4 mH). As to the two golds, one is almost certainly tolerance - probably +/- 5% - while the other is anybody's guess at this point (Q?). One other clue - unless it's a little air-core inductor, it's very UNLIKELY to have a value as low as 5.4 uH. On the other hand, 5.4 mH is a very reasonable value for a small iron or ferrite-core coil. Bob Myers KC0EW HP Graphics Tech. Div.| Opinions expressed here are not Ft. Collins, Colorado | those of my employer or any other myers@fc.hp.com | sentient life-form on this planet.