Starting Electronics Needs Your Help!
It is that time of the year when we need to pay for web hosting and buy new components and equipment for new tutorials. You can help by making a donation. Contribute to this website by clicking the Donate button. The total will be updated once daily. (You may need to clear your browser cache to see the updates.)
Target Amount: $2000
Amount Raised: $1579.10
Top Donor: C.C. $100
Created on: 30 July 2012
The schematic symbols for two different types of switches are shown below:
The switch symbol on the left represents a switch that when switched on, will stay on and when switched off will stay off. This switch is a "single pole single throw" switch.
The switch on the right represents a switch that will only be closed when pushed. It will switch off when released and never latch closed. This is known as a momentary switch.
In schematic diagrams, the reference designator for a switch will typically start with S or SW as shown.
The switches on the left of the photo below are momentary tactile switches. The switch immediately to the right of these switches is a bigger momentary switch with a cap. The switch to the right of this is a push button single pole switch. Next is a toggle switch and finally a key switch.