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.
Magnetic reed switch circuit diagram.
There are all sorts of creative applications for reed switches.
They re perfect for any projects that require non contact control.
There are normally open reed switches and normally closed reed switches.
Normally closed reed switch by anthony j.
Simply put it is a magnetic switch.
When a magnet is reached in proximity of s1 it closes to give a negative.
A switch with one magnetic reed and one non magnetic one.
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.
Switch operated by a magnetic field.
Describes various ways of making a normally closed switch.
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.
In its simplest and most common form it consists of a pair of ferromagnetic flexible metal contacts in a hermetically sealed glass envelope.
Wilkis october 17 1967.
The contacts are usually normally open closing when a magnetic field is present or they may be.
How to build a reed switch circuit.
Introduction to reed switches magnets and magnetic fields by stephen day.