---
title: "Yet Another Power Supply"
type: "article"
slug: "yet-another-power-supply"
url: "http://localhost/article/yet-another-power-supply/"
markdown_url: "http://localhost/article/yet-another-power-supply.md"
published_at: "2026-01-21T13:19:53+00:00"
modified_at: "2026-01-21T13:19:53+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "After reading Herb article on QL power supply modifications, I thought I would write up my alternate approach. I am currently powering a QL, Trump Card, Internal Mouse Interface and disk drive using the setup described below. The heat sinks and voltage regulators have been removed from both the QL and Trump Card since there…"
category:
  - name: "CATS Newsletter"
    slug: "cats-newsletter"
    taxonomy: "category"
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post_tag:
  - name: "Hardware project"
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    taxonomy: "post_tag"
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  - name: "QL"
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    taxonomy: "post_tag"
    url: "http://localhost/tag/ql/"
model:
  - name: "Sinclair QL"
    slug: "sinclair-ql"
    taxonomy: "model"
    url: "http://localhost/model/sinclair-ql/"
indiv:
  - name: "Tom Robbins"
    slug: "tom-robbins"
    taxonomy: "indiv"
    url: "http://localhost/indiv/tom-robbins/"
publication_r:
  id: 35941
  title: "CATS Newsletter"
  type: "periodical"
  url: "http://localhost/periodical/cats-newsletter/"
authors_r:
  - name: "Tom Robbins"
    slug: "tom-robbins"
    taxonomy: "indiv"
    url: "http://localhost/indiv/tom-robbins/"
volume: "8"
issue: "6"
issues_articles:
  - id: 38915
    title: "CATS v8 n6"
    type: "issue"
    url: "http://localhost/issue/cats-v8-n6/"
pages: "4-5"
pubdate: "November 1990"
archive_link: false
---

# Yet Another Power Supply

After reading Herb article on QL power supply modifications, I thought I would write up my alternate approach. I am currently powering a QL, Trump Card, Internal Mouse Interface and disk drive using the setup described below. The heat sinks and voltage regulators have been removed from both the QL and Trump Card since there is virtually no heat generated by this arrangement.