rs232 to ttl converter without using external power supply

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fireplus

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Hi,
Any body have any idea about that :
can i use DTR , RTS to get the power for the converter circuit (TX , RX)

Thanks for any body wants to help

Fire in the Wire :idea:
 

Re: rs232 to ttl converter without using external power supp

all of them use external power supply
thanks for you efforts

any body have a solution ?

Fire in the Wire :idea:
 

Re: rs232 to ttl converter without using external power supp

Below is an example on how to take power from the RS-232 port ..
This circuit was delivered in my previous post, as well as other ciruits with trasistor-based level converters ..
They only require a little bit of effort to combine them into one working circuit .. that's all ..

Regards,
IanP
 

    fireplus

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