---
title: "Power Line Filter by HB Industries"
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url: "http://localhost/article/power-line-filter-by-hb-industries/"
markdown_url: "http://localhost/article/power-line-filter-by-hb-industries.md"
published_at: "2026-03-12T23:40:55+00:00"
modified_at: "2026-03-12T23:40:55+00:00"
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excerpt: "A review of a $19.95 power line noise filter from HB Industries that reduces voltage spikes from 600-800mV to under 10mV, protecting the ZX/TS from power irregularities."
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  title: "Sinclair Users Network"
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volume: "2"
issue: "1"
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  - id: 26557
    title: "Sinclair Users Network January 1983"
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pages: "13"
pubdate: "January 1983"
archive_link: false
---

# Power Line Filter by HB Industries

A review of a $19.95 power line noise filter from HB Industries that reduces voltage spikes from 600-800mV to under 10mV, protecting the ZX/TS from power irregularities.