---
title: "Supply Protector"
type: "article"
slug: "supply-protector"
url: "http://localhost/article/supply-protector/"
markdown_url: "http://localhost/article/supply-protector.md"
published_at: "2020-10-27T17:17:57+00:00"
modified_at: "2024-05-26T14:33:35+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Battery backup power supply for ZX81."
category:
  - name: "Electronics Today International"
    slug: "electronics-today-international"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/electronics-today-international/"
post_tag:
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - name: "Sinclair ZX81"
    slug: "zx81"
    taxonomy: "model"
    url: "http://localhost/model/zx81/"
indiv:
  - name: "Phil Walker"
    slug: "phil-walker"
    taxonomy: "indiv"
    url: "http://localhost/indiv/phil-walker/"
publication: "Electronics Today International"
publication_r:
  id: 10129
  title: "Electronics Today International"
  type: "periodical"
  url: "http://localhost/periodical/electronics-today-international/"
authors: "Phil Walker"
volume: "8"
issue: "2"
pages: "24-25"
pubdate: "February 1984"
archive_link: false
archiveurl: "https://www.americanradiohistory.com/Archive-Electronics-Today/Canada/80s/ETI-1984-02-Canada.pdf"
volumeissue: "v8n2"
---

Battery backup power supply for ZX81.