I am a total novice in the wonder land of electronics hobby.
I am following instructions given in "http://pic16f628a.blogspot.in/2010/07/variable-dc-power-supply-125-18v-using.html" for a variable DC power supply proect. The project gives a mathematical formula for Vout as follows:
Vout = 1.25 V ( 1 + R2/R1) + Iadj R2
As per advice I have downloaded LM350 data sheet and it also has the same formula. I wish to know what V stands for in the formula.
One can observe that 1.25 V (1+R2/R1) is always bigger than 1.25 V and Vout would be maximum when R2 is maximum, in the present project 5 K.
My different inputs for Vin I got, as expected, different maximum values for Vout. Lowering of R2 resulted in smaller Vout (also smaller than Vin).
Hence my query is :What does V in the above formula stand for?
Thanking an answer in advance.
sureshparanape
I am following instructions given in "http://pic16f628a.blogspot.in/2010/07/variable-dc-power-supply-125-18v-using.html" for a variable DC power supply proect. The project gives a mathematical formula for Vout as follows:
Vout = 1.25 V ( 1 + R2/R1) + Iadj R2
As per advice I have downloaded LM350 data sheet and it also has the same formula. I wish to know what V stands for in the formula.
One can observe that 1.25 V (1+R2/R1) is always bigger than 1.25 V and Vout would be maximum when R2 is maximum, in the present project 5 K.
My different inputs for Vin I got, as expected, different maximum values for Vout. Lowering of R2 resulted in smaller Vout (also smaller than Vin).
Hence my query is :What does V in the above formula stand for?
Thanking an answer in advance.
sureshparanape
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