Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Post History

60%
+1 −0
Q&A What are these mystery components (one of wire coil, another labeled "100-10L A9")?

The component with the coil of wire is an inductor. Judging from the small size, it is probably only a few µH. There are lots of uses for inductors, like for filters, switching power supplies, tu...

posted 9mo ago by Olin Lathrop‭  ·  edited 9mo ago by Olin Lathrop‭

Answer
#2: Post edited by user avatar Olin Lathrop‭ · 2024-04-04T12:22:24Z (9 months ago)
  • The component with the coil of wire is an inductor. Judging from the small size, it is probably only a few &micro;H. There are lots of uses for inductors, like for filters, switching power supplies, tuned oscillators, and others. I would not try to guess the use from this scant information.
  • The component to the left of the inductor in second picture looks to be a diode. It only has two terminals. The stripe at one end probably marks the cathode.
  • The component with the coil of wire is an inductor. Judging from the small size, it is probably only a few &micro;H. There are lots of uses for inductors, like for filters, switching power supplies, tuned oscillators, and others. I would not try to guess the use from this scant information.
  • The component to the left of the inductor in second picture looks to be a diode. It only has two terminals. The stripe at one end probably marks the cathode.
  • <h2>Added</h2>
  • Lundin has pointed out that the black component on the left is probably a tantalum cap, not a diode. In retrospect and given the markings, I agree that it is a definite possibility that I just didn't think of earlier.
#1: Initial revision by user avatar Olin Lathrop‭ · 2024-04-03T15:24:19Z (9 months ago)
The component with the coil of wire is an inductor.  Judging from the small size, it is probably only a few &micro;H.  There are lots of uses for inductors, like for filters, switching power supplies, tuned oscillators, and others.  I would not try to guess the use from this scant information.

The component to the left of the inductor in second picture looks to be a diode.  It only has two terminals.  The stripe at one end probably marks the cathode.