Sensors /
Detectors: Magnetic Sensors
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Links to electronic circuits, electronic schematics and designs for engineers,
hobbyists, students & inventors:
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High-isolation converters use off the shelf magnetics - 22-Jul-99
Issue of EDN Isolated flyback converters usually evoke thoughts-or
bitter memories-of custom transformers, slipped delivery schedules, and
agency-approval problems. Off-the-shelf flyback transformers carry isolation
ratings of only 300 to 500V and rarely of as much as 1 kV.… [Design Idea by
Mitchell Lee, Linear Technology Corp, Milpitas, CA] |
Mag Card Reader - The unit provides the magnetic head on a spring
mechanism along with low level head signal Amplifiers and data slicers.
Three signal lines comming from …....) [Luhan Monat, Mesa, AZ] |
Magnetic card reader - The reader mechanism shown was purchased
from [url=http://www.allelectronics.com/]All Electronics[/url] for $1.50.
The unit provides the magnetic head on a spring mechanism along with low
level head signal Amplifiers and data slicers. Three signal lines comming
from the unit provide card presence, clock,. |
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Magnetic field probe requires few components - 15-Dec-06 Issue of EDN
Hall-effect sensor and DMM explore stray fields. [Design Idea by Sandeep M Satav
and VV Rama Sarma, EMI-EMC Centre, RCI, Hyderabad, India; Edited by Brad Thompson and
Fran Granville] |
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Magnetic Field Receiver - There are two approaches for receiving the
signals, a loop or coil antenna that picks up magnetic fields or a whip or wire
antenna that picks up the electric field. (Nature manages to make electromagnetic
waves at these frequencies but you cannot make an "electromagnetic" or tuned
antenna,....(electronic design added (6/07) |
Magnetic Gun - When optimally tuned, it will propel a small slug about 1.5
metres high, or 2.5 metres horizontally. IC1 is a 555 timer in astable mode, sending
approx.10 ms pulses to decade counter IC2. IC2 is continually reset through R3, until
pin 15 is taken low through the "Fire" button(Circuit design added 07/07/07) [Circuit
designed by Rev. Thomas Scarborough] |
Magnetic levitation circuit |
Magnetic levitation device - Here's the schematic of the device depicted in
the photo. Each of the ten coil-assemblies has its own copy of the above circuit. The
SS41 is a Microswitch Hall Effect magnetic field sensor IC that I found in Surplus
catalog for $.50 each. Any similar hall IC should work. [William Beaty] |
Magnetic Proximity Sensors - Here is an interesting circuit for a magnetic
proximity switch which can be used in various applications. The magnetic proximity
switch circuit, in principle, consists of a reed switch at its heart. When a magnet is
brought in the vicinity of the sensor (reed switch), it operates and controls the rest
of the switching circuit....(added 09/05) |
Magnetic-Radiation Remote-Control - Short-range 35KHz operation,
single-channel unit Simple circuitry, no outer antennas required (added 02/05)
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Magnetoresistive Sensors: Theory of Operation & Applications - Zetec
Semiconductors Applications Notes An Introduction to Magnetoresistive sensor
technology as used for current and magnetic field sensor products, including theory of
operation, a description of parametric terms, and application circuit examples.
(App Note added 2/06) |
Method offers fail safe variable reluctance sensors - 22-Nov-01 Issue of EDN
Variable-reluctance sensors are preferred for industrial and automotive environments,
because they sustain mechanical vibration and operation to 300°C. In most
applications, they sense a steel target that is part of a rotating assembly. Because
the unprocessed signal Amplitude is proportional to target speed, a sensor whose
signal-processing circuitry is designed for high speed cease. [Design Idea by Phil
Levya, Maxim Integrated Products, Sunnyvale, CA] |
Optical Magnetic Projection Booth System
- (circuit / schematic design added 6/06) |
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