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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.


Putting reed switches to work in logic circuits.
ELECTRONICS WORLD Aug 1970 (v.84#2) pg. 38

Magnetic detector. Circuit for an electronic switch that is activated by a magnetic field. Incorporates the Sprague type UGN-3013T Hall-effect, solid-state switch IC.
HANDS-ON ELECTRONICS Apr 1988 (v.5#4) pg. 87

Reed switch equipped with bias magnet is good for "Magic Wand" tricks.
POPULAR ELECTRONICS [1] Feb 1965 (v.22#2) pg. 84

Hall-effect magnetic sensor (switch). A moving magnet is able to turn this switch on-and-off. Useful for bounce-free operations in keyboards, digital-logic switches, etc.
POPULAR ELECTRONICS [1] Oct 1980 (v.18#4) pg. 96

Sensors made simple. The construction, characteristics and operation of commercially available sensors such as mechanical switches, magnetic switches, photocells, phototransistors, and optocouplers.
POPULAR ELECTRONICS [2] Mar 1993 (v.10#3) pg. 40

An introduction to magnetically operated, solid-state Hall-effect switch circuits. (1) Simple switch. (2) Latching circuit. (3) Hall-effect oscillator. (4) RC oscillator.
POPULAR ELECTRONICS [2] Jul 1993 (v.10#7) pg. 73

Use a Hall-effect, magnetically activated solid-state switch to control operation of a low-power relay.
POPULAR ELECTRONICS [2] Mar 1998 (v.15#3) pg. 58

Burglar alarm switches made easy. Make inexpensive magnetic intruder switches by encasing tiny magnetic reed switches in plastic housings from ball point pens.
RADIO-ELECTRONICS Jul 1978 (v.49#7) pg. 41

Magnetic starters. How to check the safety of machine tool magnetic switches.
WOOD MAGAZINE #115 Jun 1999 (v.16#4) pg. 14