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- Newsgroups: sci.electronics
- Path: sparky!uunet!spool.mu.edu!uwm.edu!linac!att!cbnews!wrb
- From: wrb@cbnews.cb.att.com (wallace.r.blackburn)
- Subject: Re: Magnetic Sensor?, hall effect, reed switches, etc
- Organization: AT&T
- Distribution: usa
- Date: Tue, 5 Jan 1993 16:38:11 GMT
- Message-ID: <1993Jan5.163811.6426@cbnews.cb.att.com>
- References: <1993Jan2.104609.4196@arizona.edu> <J65swB1w165w@inqmind.bison.mb.ca> <103678@netnews.upenn.edu>
- Lines: 29
-
- In article <103678@netnews.upenn.edu> george@mech.seas.upenn.edu writes:
- >
- >:Good magnetic sensors in disk drives , brushless DC motors or Car
- >:ignitions use Hall Effect sensors that provide a solid state or linear
- >
- >:
- >:Cheaper sensors use magnetic switches when the contact frequency is low.
- >:REED RELAYS are such a device.
- >:
- >
- >my latest project needs a magnetic sensor to operate over a range
- >from 0 to 100Hz. I think this is at best pushing the limit
- >of what i can do with a reed switch. How can i find out
- >out more about hall effect devices? A small quantity supplier,
- >with data sheets would be nice..
- >--
- > / george jefferson
- >\/ * george@mech.seas.upenn.edu
-
- The latest issue (Feb '93) of ComputerCraft has an article titled "Using
- Rotary Encoders" that has some good info on Hall-effect sensors. All
- Electronics has 3 of them listed in their Spring/Summer 1992 catalog.
- They're probably still in their latest one. Number is 1-800-826-5432.
-
- They show a Microswitch #SS41 that operates at up to 100 kHz. Their cat. #
- is HESW-2 and they're 75 cents or 10 for $6.50. It is in a TO-92 package.
-
-
- Wally Blackburn AA8DX
-