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Can a 100 mA adapter be substituted with a 200 mA adapter?
A 9V 1A adapter will supply up to 9 Watts of power and a 9V 200mA adapter delivers up to 1.8W of power. The 200mA adaptor may not be able to supply enough power to a device that has been supplied with a 1A adapter. The 1A adaptor should operate equipment that originally used a 200mA adapter. Before using a different power supply, check that the outputs are both DC or both AC. If they are both DC, it is important to check that the polarity at the connector is the same for both. If AC and DC supplies are swapped or the polarity is swapped there is a risk that the equipment will be damaged.
Can you use 500 ma power adapter on a device that requires 625 ma?
No, the capacity of the device is too large. The adapter will heat up and may even burn its internal windings open.
Why 4mA is taken as the signal instead of 0 mA?
In a current loop, 4-20 ma is a typical range. We don't use 0 ma as a valid signal, because that is reserved for a broken wire or dead transmitter condition. The receiver is designed to offset and translate the 4-20 as necessary, with the break condition also being reported.
1500 ma is a amp and a half?
Yes. 1500 mA = 1.5 A
What is a falling load generator?
• Used to provide the highest mA settings at theshortest time possible.– The operator selects mAs setting– The computer automatically calibrates the time ofexposure (allowing consistently shorter exposures)– The mA is therefore controlled by the falling-loadgenerator.– The mA starts at the highest possible setting and“falls” throughout the exposure.• This causes the kV to fluctuate slightly throughoutexposure.• Can shorten tube life due to constant use of high mA
