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Do It Yourself (DIY) paradise for tube and SET project builders.

Hash Filter Model

Just wanted to add this image so you can see that the ultrasonic spike isn't only a small anomaly. If the goal of the hash filter is RF suppression, this doesn't do the job! Granted, it's well out of the audible spectrum, but any energy on the B+ line at that frequency could cause the PS voltage to swing like crazy. 10uF across the .001uF resolves this completely.





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Edits: 04/02/17

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