Power Supply Voltage Selector Switch

The power supply voltage switch sometimes called the voltage selector switch is a small switch located on the back of most desktop computer power supply units psus this small switch is used to set the input voltage to the power supply to either 110v 115v or 220v 230v.

Power supply voltage selector switch.

St s automatic voltage switches consist of a dedicated driver associated with a triac for bi voltage 120 240 v applications. Most modern desktop personal computer power supplies conform to the atx. The aat4674 and aat4674 1 integrate reverse blocking current sensing a programmable current limit and single control pin switching in a compact footprint. Has built in 2 circuits of mosfet.

On the other hand if the power supply has a voltage selector switch based on the delon circuit for 115 230 v computer atx power supplies typically are in this category the selector switch would have to be put in the 230 v position and the required voltage would be 325 vdc 230 2. Triac devices have a maximum voltage specified at 600 v and a maximum current up to 12 a. Moreover it has built in simultaneous on prevention. You will see a 115v and a 230v setting.

With max voltage ratings of 120v 240v our voltage selector switches are ideal electronic solutions to accommodate and regulate fluctuating voltages in power supply units psus. A power supply unit or psu converts mains ac to low voltage regulated dc power for the internal components of a computer. General description bd2204gul is high side switch ic. Buck switch mode power supply.

3 3v power supply and 1 8v power supply for memory card can be selected by sel terminal. The controller s main features are full 50 60 hz compatibility the triggering pulse train of the triac the parasitic filter and low power consumption. The manual voltage selector switch will usually be red and located on the rear of the computer where the plug attaches to the case. The buck switching regulator is a type of switch mode power supply circuit that is designed to efficiently reduce dc voltage from a higher voltage to a lower one that is it subtracts or bucks the supply voltage thereby reducing the voltage available at the output terminals without changing the polarity.

Your computer s power supply may be using a manual voltage selector switch that can be set for different power requirements for various regions of the world. Modern personal computers universally use switched mode power supplies some power supplies have a manual switch for selecting input voltage while others automatically adapt to the mains voltage. Two dual input single output power supply selector switches have low dropout capability and are designed to operate from batteries or any power source up to 6v.