Magnetic Reed Switch Circuit Diagram

There are normally open reed switches and normally closed reed switches.

Magnetic reed switch circuit diagram.

In its simplest and most common form it consists of a pair of ferromagnetic flexible metal contacts in a hermetically sealed glass envelope. They re perfect for any projects that require non contact control. Introduction to reed switches magnets and magnetic fields by stephen day. When a magnet is reached in proximity of s1 it closes to give a negative.

The reed switch is an electrical switch operated by an applied magnetic field it was invented at bell telephone laboratories in 1936 by walter b. Here is the circuit diagram of a magnetic proximity switch that finds a lot of applications in many fields the circuit is based on a magnetic reed switch s1 as the proximity sensor a monostable multivibrator based on ne555 ic1 and a toggle flip flop based on cd4013 ic2 does the rest of the circuit. Wilkis october 17 1967. There are all sorts of creative applications for reed switches.

A magnetic door switch for example is just a dressed up reed switch and a mating magnet by keeping both parts of the switch separate the door can open and close freely and maintain its regular duties as a door the anemometer in our weather meter combines a. A switch with one magnetic reed and one non magnetic one. A reed switch is a very basic 2 lead switch that is switched on by a magnet being brought into the vicinity of the switch. The contacts are usually normally open closing when a magnetic field is present or they may be.

Describes various ways of making a normally closed switch. How to build a reed switch circuit. There are 2 basic types of reed switches. Normally closed reed switch by anthony j.