what's the iPhone 3.5 mm output jack power supply output?
Hey - I am trying to understand what's the power (watt) that the iPhone 4s (or iphone 4) can push from the 3.5mm output jack...
I THINK it's voltage output is 1.5v (I would be happy to get confirmation on that) , but I have no idea about the power it can drive..
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댓글 4개
geva, start checking on here http://www.gsmarena.com/apple_iphone_4-r... and if you have an oscilloscope, you can measure it by following this link http://www.ehow.com/info_12024907_many-w... Great question...
oldturkey03 의
I would like first of all , to send a BIG THANK YOU to you both for answering my question :-).
I want also to clarify my question , since now that I read your answers, I understand better what to ask :
1. I want to use the iPhone 3.5mm to connect a microphone , but I need to understand the power concumption this microphone can take from the iPhone - since the iPhone powers the original iPhone headset microphone, I assume it can also power other types of microphons, but not all types, just the ones that operates on the same power concumption of the headset mic - so, what is it?
2. question about the iPhone 4s INTERNAL microphone - can you supply the full spec details of the iPhone intenral microphone?
Thanks again for all your help :-).
G.
geva 의
@geva, for a microphone you are actually looking at impedance. Microphone Output Impedance: Long = 1700 Ohms (at 1000Hz) and Short = 760 Ohms (at 1000Hz) (It is very important to note that the iPhone 4 internal mic input requires a mic with an impedance of 800 Ohms and higher. The biggest reason for other iPhone external mic's not to work is an impedance mismatch. Here is all you ever wanted to know about using an external mic
oldturkey03 의
@oldturkey - thanks again for your help and detailed knwoladge (I am really impressed!)
If you be kind enough to add to this thread the details of a technical spec analysis of the iPhone INTERNAL microphone (just like you did for the headset microphone) , it will help me a lot.
Thanks ,
G.
geva 의