PUSH BUTTON

Push button switches,

ranging from electronics applications, through to

industrial control and high current switching.

There are generally many kinds of  button switches

with different structures, which are divided into

ordinary button type, mushroom head type,

self-locking type, self-resetting type, rotary handle type,

indicator light type, light symbol type and key type, etc.

Although the structure is different, their working principle is still basically the same.

There are single-button, double-button, three-button

and different combinations of push button switches.

If we want to understand its working principle,

we must first know the structure of the button switch,

and analyze its working principle from the structure