circuit board 2

The second circuit is made to regulate voltage.In the second circuitboard i made a circuit containing two rectifying diodes a zener diode two capasitors three resistors a led and a voltage regulator the circuit has a 12v iput and a 5v and 12 v output.I had to calclate the resistors, the first resistor circuit as the 5v supply and a led the led is 1.7v and 20ma so i worked it out as:
5-1.7=3.3
3.3/0.02=165
R1=165ohm
the second and third resistor has a formula of vref(1+R3/R2)
vref=1.25
5/1.25=4
3R2=R3
i checked on the datasheet and found R2=240ohm
240x3=720
R3=720
After I worked out the resistor I designd the circuit on lochmaster

I had some trouble with this circuit and after diagnosing it I found that my diode was the wrong way around and caused it to blow up and also caused my zener diode to bloow up.After i reaplaced the diodes i tested it and found that i was geting 9v output instead of the 5 that i had to get.1 did visual inspection first and comparing my circuit to my design.I found i was missin a jumper wire from R2 to the adjustment of the voltage regulator this was cuting my resistor out of the circuit. After puting the wire in and testing it I got 2v wich is to low.i checked all my values of my resistors and tested my resistors I found one of my resistors was to small after replacing it with the right size resistor i was geting a voltage of 5.09volts so it was working perfectly.

the photo above shows my circuit working.The way to test this circuit is to have a 12v supply put the positve of the circuit in the positive supply and the negative in the negative then get a multimeter put it on the volts scale put the black terminal in the negative of the supply and the red on the wire when on the 12v (red wire in this case) shoul give 12v wen on the 5v(white wire)should give 5v.