I am making a variable DC power supply via Multisim and the values are given to me is V1=7, V2=15, Imax(load)=209mA (both V1 and V2 is DC value which is on U1.)
I am using resistors, an LM317 voltage regulator, and a variable resistor to change my voltage to my V1 to V2 and 2 capacitors.
The issue I am facing that I am not able to get calculate correct values for me to work for resistors, capacitors and Imax(load). but This what I have done fo far:
- CS=5Io(maybe I max)/Vp100
- R1=250 as a constant
- CF=1uF Tant capacitor as a constant I tried to apply ohms law to get desired Imax(load)=209mA on RL, but my DC value decreases and it does not even reach to the required mA, (I applied ohms law when my variable resistor is at 100%).
This is the circuit I have drawn so far in Multisim, feel free to improve it and tell me what I have done wrong.