It is a single contact that can be either on or off. It has just two connections. The typical household light switch is a good example. SPST stands for Single Pole - Single Throw Single Pole = one contact Single Throw = on/off (as opposed to on/off/on, slow/fast/off, etc.)
A single pole single throw switch (SPST) is used to open or close a contact to a single wire. It can be used as an on/off switch for an appliance or for a light bulb.
A single pole single throw switch (SPST) is used to open or close a contact to a single wire. It can be used as an on/off switch for an appliance or for a light bulb.
SPST stands for Single-Pole, Single-Throw, and is a designation for the switch contact arrangement that has just two terminals. As the switch is thrown, these two terminals will be either open or closed depending on the position of the handle.
It is a single contact that can be either on or off. It has just two connections. The typical household light switch is a good example. SPST stands for Single Pole - Single Throw Single Pole = one contact Single Throw = on/off (as opposed to on/off/on, slow/fast/off, etc.)
An SPST switch can break the connection or hold the connection depending on which switch your using.
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A SPST switch is the type used for turning the lights on and off in your home lighting systems. It is just basically just an on - off switch.
It stands for Single Pole Single Throw
A double pole relay has two independent and isolated contacts. Each of these poles can operate individual circuits. There are three types of relay poles Form A relays are SPST with a default state of normally open. Form B relays are SPST with a default state of normally closed. Form C relays are SPDT and break the connection with one throw before making contact with the other (break before make). When the relay coil is energized these contacts reverse. The closed contact opens and the open contacts close.
These are contact arrangements that can be found on switches and relays. The form designation is fairly old and rarely used now. Form A: a single, normally open contact that closes upon actuation. Form B: same as A, except in reverse. A normally closed contact that opens. Form C: A form A contact connected to a form B. The Form C contact has three wires, NO (normally open), NC (normally closed) and C (common). Upon actuation, the NO contact closes (continuity from NO-C) and the NC contact opens (no continuity from NC-C). It is more common now to see the following designations: Forms A and B can also be referred to as single pole-single throw: SPST-NO = Form A SPST-NC = Form B and Form C can be referred to as single pole-double throw: SPDT = Form C
It is a type of switch or relay where there is just one set of contacts. The contacts can be open or closed. There are two terminals. A standard light switch like you would find in your home is a good example of a switch with a SPST contact.
In electronics, SPDT refers to a particular type of switch; a "Single Pole Double Throw" style. Other flavors I think you may recognize now are SPST, DPDT, and TPDT. It breaks down like this; the "Pole" count (single, double, triple, etc.) refers to the number of switch contact sets that are connected to the switch lever. The "Throw" count refers to the number of positions the switch lever is designed to be set to. Light switches in your house are SPST switches.