Gordy Wrote:
Your R3 and R4 are OK.
Your D8 is wrong direction. Important !
Refer to http://cache.national.com/ds/LM/LM337.pdf , Page 6.
This didn't make sense so I looked at the doc and don't see any problem with the D8 orientation as is.
You might want to double check this to be sure.
Your R3 and R4 are OK.
Your D8 is wrong direction. Important !
Refer to http://cache.national.com/ds/LM/LM337.pdf , Page 6.
This didn't make sense so I looked at the doc and don't see any problem with the D8 orientation as is.
You might want to double check this to be sure.
Hi,
the diodes in post 15 are OK.
But I cannot read the PCB (blue on black) well enough to check if the PCB matches the schematic.
I too think that the PCB shows R3 & R4 are connected to sense ground.
the diodes in post 15 are OK.
But I cannot read the PCB (blue on black) well enough to check if the PCB matches the schematic.
I too think that the PCB shows R3 & R4 are connected to sense ground.
I was looking for the optimal LM317 PSU and found one.
Change C3 & C4 to 100nf and close to the regulator as Andrew suggested.
Put a resistor of 1.1 to 2.2 ohm 5W between C1 > C9 and C2 > C10 to reduce ripple even more.
C5 & C6 10uF
C7 & C8 10uF tantaal
and a diode at each output (parallel to C7 & C8)
Change C3 & C4 to 100nf and close to the regulator as Andrew suggested.
Put a resistor of 1.1 to 2.2 ohm 5W between C1 > C9 and C2 > C10 to reduce ripple even more.
C5 & C6 10uF
C7 & C8 10uF tantaal
and a diode at each output (parallel to C7 & C8)
audiosteve said:
D8 was wrong. I noted that. Zei then read my note. Zei then changed D8 in the diagram to correct it. Zei then noted:
zei said:
So all is well in diode world.
Have a nice day.
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