power for rf transmitter and reciever

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tapu

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I am designing appliance control project by using rf transmitter and reciever by using 433Mhz module.but can I give power from power adaptor(5v/2Amp) to a circuit?I am confusing because rf transmitter and reciever require very little current.
 

tapu said:
I am designing appliance control project by using rf transmitter and reciever by using 433Mhz module.but can I give power from power adaptor(5v/2Amp) to a circuit?I am confusing because rf transmitter and reciever require very little current.
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Any current lower than power supply capability is no problem. This only means that the power supply will not be fully loaded. You can use a 5V, 0.5A power supply, too.
DC voltage is important to keep at 5V. If you decide to use a battery, e.g. 9V, a voltage regulator must be used to get 5 V.
 
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    tapu

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Also there are some wall-mount 5V power adapters (DCDC based, without transformer) where if they don't see a minimum load, the DCDC is not starting (power saving mode) and will be no voltage at the output.
 

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