my professor taught us that our filter capacitor's output is defined by the formula:

Vrms=(current)/(4(sqroot of 3) (frequency)(capacitance))

VDC= (rectified voltage) - (current)/4(frequency)(capacitance)

as far as I know the voltage regulator needs a bigger input voltage than what it can put out.

but calculating for the capacitors output dc voltage: (I assumed that the diodes had0.7v as their voltage drop)

VDC= (24(sqroot of 2) - 0.7v - 0.7v) - ( (1amp)/(4)(60hz)(1000uF))

i get 28.37v for the regulators input (the caps output) which doesn't make sense when I can easily get 32v as its output.

Am I doing something wrong here?