my proffessor wants me to design an AC to DC power supply with the specifications of
ripple 5%, 1V DC filtered output voltage and 220Vrms with 60hz source
i then used Multism and made a bridge rectifier and used the formulas to know what amount of capacitance etc.. that i need to get my proff's specifications.
i used this example from floyd's book as a guideline..
https://i.imgur.com/xTmz6bt.png
heres what i did.
Vpeakprimary = 1.414(220) = 311.08V
then use 10:1 step-down transformer
Vpeaksecondary = 0.1(311.08) = 31.108
the unfiltered peak full-wave rectified voltage = 31.108V - 1.4V= 29.708 V
since i need 5% ripple factor and 1volt dc output i wanted to know how much is the capacitance that i need(C)
0.05 = {[ 1 / (120hz) (1000ohm) (C) ] (29.708) } /1 V
which gave me 4951uF.
i strapped those values in the bridge rectifier i made in multism and i'm getting 29.376V when i measured my load resistor, but i need 1 volt output..
heres a picutre of the circuit i made:
https://i.imgur.com/GHnL6vW.png
is the ripple formula from floyd wrong? or did i just commit a mistake.
ripple 5%, 1V DC filtered output voltage and 220Vrms with 60hz source
i then used Multism and made a bridge rectifier and used the formulas to know what amount of capacitance etc.. that i need to get my proff's specifications.
i used this example from floyd's book as a guideline..
https://i.imgur.com/xTmz6bt.png
heres what i did.
Vpeakprimary = 1.414(220) = 311.08V
then use 10:1 step-down transformer
Vpeaksecondary = 0.1(311.08) = 31.108
the unfiltered peak full-wave rectified voltage = 31.108V - 1.4V= 29.708 V
since i need 5% ripple factor and 1volt dc output i wanted to know how much is the capacitance that i need(C)
0.05 = {[ 1 / (120hz) (1000ohm) (C) ] (29.708) } /1 V
which gave me 4951uF.
i strapped those values in the bridge rectifier i made in multism and i'm getting 29.376V when i measured my load resistor, but i need 1 volt output..
heres a picutre of the circuit i made:
https://i.imgur.com/GHnL6vW.png
is the ripple formula from floyd wrong? or did i just commit a mistake.