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OK at last i will add LM317 with adjusted value to 3.3 because i don't want to adjust the output every time i want to use the circuit finally thanks for your patient
i didn't under stand how LM1117 gives many different voltages you mean by a variable resistor or how can you explain or lead me to web page that includes circuit gives 3.3 and 5 volt from this ic
because a way like this will make my circuit very easy to replace {7805 and 7806 ....) in one !!
actually i may use 9v for a radio circuit for example and 12 or 18 or 24 for a small DC motor so thanks for your advice but i don't want to put my self in trouble if one day i needed 18 volt supply and didn't make the circuit in its time so thanks
i have used {7805,7806,7809,7810,7812,7815,7818,7824} the problem is if i want to add LM317 for example i want to change my finished eagle design and it is very difficult because there are many elements in the circuit !
at first i didn't find voltage regulator to give me 1.25 v but now i saw so...
thanks for fast reply because i am building big circuit which consist of 8 voltage regulators and layout it on eagle so i was very confusing cause it may not works so now i can build it with confidence
hi i have question about 7805 voltage regulator so can i put 2 of them like 7805 and 7806 in parallel to the same IN and of course with different OUT
because i want to use one transformer then rectifier the AC voltage to DC then have from the tow voltage regulators to different voltages
you can...
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