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 NEW    Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

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50EH5/25EH5 Filament Reg. Power Supply

This is the inside of the regulated power supply for the 50EH5 / 25EH5 tube filaments. It uses an LM317 voltage regulator and an old VCR power transformer that had just the right voltage and current ratings for the filaments of the 50EH5 / 25EH5 tubes. The output from the regulator is set for 20 some volts for the 25EH5's, and the unregulated DC is about 45V for the 50EH5's.

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Date added:Oct 13, 2008
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