LR8N3 Regulator -- Bypass the ADJ pin - diyAudio
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Old 8th December 2007, 04:15 PM   #1
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Default LR8N3 Regulator -- Bypass the ADJ pin

Just running out to hear Iphigenie -- but here's a graph of the LR8N3 regulator with and without the adjust pin bypassed. For comparison I have thrown in the LastPAS Regulator as well.

Clearly there are more tweaks for this TO-92 device -- but it is looking pretty good:

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Old 10th December 2007, 05:26 PM   #2
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I thought that there was something wrong with that chart -- so used a 680uF cap to cure the F3 problem. Here's the new chart:

Click the image to open in full size.

Here's the test setup which I used -- the switch is closed when the electrolytic is discharged to about 20V -- this makes it safe to connect to the HP3581.

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