Contents
How does a line transient affect a power supply?
A load transient injects disturbance into the output by stepping the load current, and a line transient does so by stepping the line voltage. The supply’s output response demonstrates its ability to attenuate the various frequency components of a line or load step.
What are the main causes of transient voltages?
The vast majority of transients are produced within your own facility. The main culprits are device switching, static discharge, and arcing. Each time you turn on, turn off, load, or unload an inductive device, you produce a transient. Inductive devices are those devices that use “magnetic mass” to function.
What are the benefits of transient voltage suppression?
Effective transient voltage suppression equipment can double or triple the life of electrical and electronic equipment. A systems approach to transient voltage surge suppression can result in dramatic performance in terms of return-on investment.
Why does an IC have a ripple voltage?
As an IC switches states or output levels, it draws a burst of current that produces a transient oscillation, which is sometimes called a ripple voltage. This transient response can appear on the power rails even if the supply voltage is regulated.
Which is the correct order for power supply shutdown?
Power supply shutdowns are generally specified to occur in the reverse order from the startup. The choice of startup or shutdown technique to use depends on the device’s specifications. Simultaneous startup is relatively easy to setup. The highest voltage output is connected to the input (s) of the lower voltage regulator (s) (Figure 2).
Why does my switching converter not start up?
Switching converters on applications demanding reduced output noise may encounter delayed startup, or may not startup at all, due to excessive output inrush.
What are the dangers of electrical fast transients?
Much of the protection is mechanical to guard against the elements such as extreme temperatures and humidity. However, unseen elements such as electromagnetic interference (EMI), electrical fast transient (EFT) bursts, and electrostatic discharge (ESD) can generate large voltage transients that can destroy unprotected equipment.