---
title: "Letter from Bill Roberts"
type: "article"
slug: "letter-from-bill-roberts"
url: "http://localhost/article/letter-from-bill-roberts/"
markdown_url: "http://localhost/article/letter-from-bill-roberts.md"
published_at: "2026-01-19T13:47:51+00:00"
modified_at: "2026-01-19T13:47:51+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "On Sunday, May 5, I'm planning on giving a lecture on power supplies, how to design and build them from scrounged parts. Reliable power supplies, both fixed and variable voltage, can be built by following a few simple rules."
category:
  - name: "Triangle Sinclair Users Group Newsletter"
    slug: "triangle-sinclair-users-group-newsletter"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/triangle-sinclair-users-group-newsletter/"
indiv:
  - name: "Bill Roberts"
    slug: "bill-roberts"
    taxonomy: "indiv"
    url: "http://localhost/indiv/bill-roberts/"
publication_r:
  id: 21575
  title: "Triangle Sinclair Users Group"
  type: "periodical"
  url: "http://localhost/periodical/triangle-sinclair-users-group/"
authors_r:
  - name: "Bill Roberts"
    slug: "bill-roberts"
    taxonomy: "indiv"
    url: "http://localhost/indiv/bill-roberts/"
volume: "3"
issue: "1"
issues_articles:
  - id: 53327
    title: "Triangle Sinclair Users Group v3 n1"
    type: "issue"
    url: "http://localhost/issue/triangle-sinclair-users-group-v3-n1/"
pages: "13-14"
pubdate: "January 1985"
archive_link: false
---

# Letter from Bill Roberts

On Sunday, May 5, I’m planning on giving a lecture on power supplies, how to design and build them from scrounged parts. Reliable power supplies, both fixed and variable voltage, can be built by following a few simple rules.