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Zorluk: OrtaSwitches and Relays

An electronics technician is designing a control panel that uses a single DC supply line to illuminate either a green 'Standby' lamp or a red 'Run' lamp, ensuring that only one lamp can receive power at any given time. Which type of switch configuration is required to route power between these two alternate loads?

  1. A
    Double-pole, single-throw (DPST) switch
  2. Single-pole, double-throw (SPDT) switchCevap
  3. C
    Single-pole, single-throw (SPST) switch
  4. D
    Thermal-magnetic circuit breaker

Cevap

Single-pole, double-throw (SPDT) switch
A single-pole, double-throw (SPDT) switch consists of a single common movable contact (one pole) that can connect to either of two stationary output contacts (two throws). Moving the switch actuator connects the single supply line to either the Standby lamp or the Run lamp, preventing both from being energized simultaneously.

Adım Adım Çözüm

1
Identify the number of input circuits (poles) required by the scenario.
One incoming DC supply line means 1 pole (Single-Pole, SP).
The 'pole' count defines how many independent input circuits or movable contact arms are operated by the switch mechanism.
2
Identify the number of output positions (throws) needed for switching between loads.
Two distinct output paths (Standby lamp and Run lamp) means 2 throws (Double-Throw, DT).
The 'throw' count defines how many individual output positions or contacts each pole can connect to.
3
Combine pole and throw nomenclature to select the appropriate component.
Single-Pole, Double-Throw (SPDT).
An SPDT switch directs current from one common terminal to either of two branch terminals in a mutually exclusive manner.

Anahtar Kavram

Switch pole and throw configurations (SPST, SPDT, DPST, DPDT)
Tahmini Süre:1m 0s
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Konular

Switches and Relays

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