excess current การใช้

• Without a ballast, excess current would flow, causing rapid destruction of the lamp.
• If the motor is defective, it will draw excess current.
• Excess current might be drawn, and distortion might occur.
• A shorted turn would cause excess current, low voltage and might cause it to burn up.
• It generates electricity for use on the site, any excess current being fed into the national grid.
• Semiconductor devices may use a fast or " ultrafast " fuse as semiconductor devices heat rapidly when excess current flows.
• Driving Nixies outside of their specified electrical parameters will accelerate their demise, especially excess current, which increases sputtering of the electrodes.
• If a jump is required, the idea behind turning on the defroster or the heater fan is to absorb excess current.
• Failures can be caused by excess temperature, excess current or voltage, ionizing radiation, mechanical shock, stress or impact, and many other causes.
• Also, AFCIs provide no specific protection against " glowing " connections also known as a High Resistance Connection, excess current, high line voltages or low line voltages.
• These devices combine the mechanism that initiates the trip ( by sensing excess current ) as well as the mechanism that breaks the current flow in a single unit.
• Power supplies capable of delivering more than 18 A at 12 V connect wires in groups to two or more current sensors which will shut down the supply if excess current flows.
• An arc can be caused by applying voltage to the anode ( plate ) before the cathode has come up to operating temperature, or by drawing excess current through a rectifier, which damages the emission coating.
• This is opposite of most line transformers, which will produce full voltage to a load even if overloaded, unless the resistance of windings is too great to allow the excess current or until a winding burns out.
• If the motor is defective ( in that some of the windings are shorted out ) then the back emf will be reduced and the resistance of the motor will be reduced and excess current will be drawn, which heats the battery.
• In these miniature circuit breakers, the current is run through a solenoid, and, in the event of excess current flow, the magnetic pull of the solenoid is sufficient to force open the circuit breaker's contacts ( often indirectly through a tripping mechanism ).
• :Certainly transformers can be combined in series or in parallel, but if it is done haphazardly, some may be exposed to excess voltage or may have excess current drawn from them resulting in insulation failure or overloading, and the resulting in smoke, fire, and sparks.
• However, at a certain point ( at the phase transition ) a cascade failure may occur, where the excess current from one popped fuse overloads the next fuse in turn, until the two sides of the net are completely disconnected and no more current flows.
• Although strobe lights are the most common use of trigger transformers, other devices such as arc lamps, gas laser tubes and even the common fluorescent light employ trigger transformers, however usually in a different form, such as using an electrical ballast to provide both the high voltage spike, as well as current limiting to prevent the tube from drawing excess current.