Electronics - Voltage and Current - Discussion

@Kowsalya.

The "push-button" has been utilized in calculators, push-button telephones, kitchen appliances, and various other mechanical and electronic devices, home and commercial.

In industrial and commercial applications, push buttons can be linked together by a mechanical linkage so that the act of pushing one button causes the other button to be released. In this way, a stop button can "force" a start button to be released. This method of linkage is used in simple manual operations in which the machine or process have no electrical circuits for control.

Pushbuttons are often color-coded to associate them with their function so that the operator will not push the wrong button in error. Commonly used colors are red for stopping the machine or process and green for starting the machine or process.

Red pushbuttons can also have large heads (called mushroom heads) for easy operation and to facilitate the stopping of a machine. These pushbuttons are called emergency stop buttons and are mandated by the electrical code in many jurisdictions for increased safety. This large mushroom shape can also be found in buttons for use with operators who need to wear gloves for their work and could not actuate a regular flush-mounted push button. As an aid for operators and users in industrial or commercial applications, a pilot light is commonly added to draw the attention of the user and to provide feedback if the button is pushed. Typically this light is included into the center of the pushbutton and a lens replaces the pushbutton hard center disk. The source of the energy to illuminate the light is not directly tied to the contacts on the back of the pushbutton but to the action the pushbutton controls. In this way a start button when pushed will cause the process or machine operation to be started and a secondary contact designed into the operation or process will close to turn on the pilot light and signify the action of pushing the button caused the resultant process or action to start.

What is push button? I want to explanation of spdt, spst, dpst.

What about lift button?

Please differentiate SPST&SPDT?

Simple example off push button is our DOOR BELL until we press the bell button the current can flow when we drop button current cut off.

"spdt,spst,dpst,dpdt":
What is the Correct symbol?

Please tell code of different type of switch.

Thanks to Sourabh.

What is push button ?

@Sumita.

If we do parallel connections then we can provided 6. 1v supply to both the motors so that both can work at a time. But the problem is if you need to operate these motors separately then one should provide a switch so that we get option in-front of us, which is more suitable way.