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Can a UPS be repaired?
You can repair your computer UPS yourself . Usually the lifetime for any UPS is one or two years. Most of the time an UPS battery gets damaged after this period. So you don’t need to be worry about your UPS.
How do you fix UPS problems?
Be sure that the power cable is securely connected to the unit and to the utility power supply. The input circuit breaker has tripped. Reduce the load to the UPS, disconnect nonessential equipment and reset the circuit breaker. Check the utility power supply to the UPS by plugging in a table lamp.
How often should a UPS be replaced?
During a UPS’s lifetime, the need for occasional repairs and battery replacements can be expected; otherwise, this hardware is designed to last for at least 6 years, depending on environment and care.
How long UPS will last?
While some UPS systems can last 15 or more years before needing to be replaced, these primary components are subject to failure far earlier. To avoid downtime or damage to critical equipment, make sure you understand the lifecycle and maintenance requirements of a UPS’s key components.
Why do MOSFETs have a long reverse recovery time?
A problem can arise because of the slow turn-off (or reverse recovery) of the internal body diode when the opposing MOSFET tries to turn on. MOSFET body diodes generally have a long reverse recovery time compared to the performance of the MOSFETs themselves.
What happens when the body of a MOSFET blows up?
MOSFET body diodes generally have a long reverse recovery time compared to the performance of the MOSFETs themselves. If the body diode of one MOSFET conducts when the opposing device is on, a short circuit arises resembling the shoot-through condition.
What kind of voltage does a MOSFET need to fail?
For example, a suitably high voltage applied between the gate and source (VGS) will break down the MOSFET gate oxide. Gates rated at 12 V will likely succumb at about 15 V or so; gates having a 20-V rating typically fail at around 25 V.
What happens when you run a direct short on a MOSFET?
A common outcome of a direct short is a melting of the die and metal, eventually opening the circuit. For example, a suitably high voltage applied between the gate and source (VGS) will break down the MOSFET gate oxide.