+8V / -8V dual linear regulators by 78L08 and 79L08

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The power supply is a regular split-supply design based on a 78L08 and 79L08 linear regulators. I made use of a 9-0-9 transformer, which was a bit risky (very low headroom voltage for the regulators), but then my dealer didnt have a stock of 12-0-12 transformers. The output of the transformer is rectified and smoothed using 100uF capacitors. The float-voltage measured here for the 9-0-9 transformer was +/- 13V. The unregulated DC is regulated by the 78L08 and 79L08 to give the regulated supply rails for the circuit.

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http://www.circuithut.com/index.php?/circuit/content/view/full/391
Thank you.

This entry was posted on Sunday, March 9th, 2008 at 1:53 pm and is filed under Power supply. You can follow any responses to this entry through the RSS 2.0 feed.