---
title: "Vpp Power Supply"
id: 14540
type: "product"
slug: "vpp-power-supply"
url: "http://localhost/product/vpp-power-supply/"
markdown_url: "http://localhost/product/vpp-power-supply.md"
published_at: "2019-11-30T01:42:57+00:00"
modified_at: "2026-03-22T13:13:30+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "This small single sided board provides 4.4 volts, 21 volts, and 25 volts DC for use with any programmer offered by the John Oliger Co. This circuit is designed to put as little stress on the EPROM as possible during programming and is recommended for use with these programmers. The board is supplied with schematic,…"
category:
  - name: "Miscellaneous"
    slug: "misc"
    taxonomy: "category"
    url: "http://localhost/category/hardware/misc/"
post_tag:
  - name: "John Oliger Co."
    slug: "john-oliger-co"
    taxonomy: "post_tag"
    url: "http://localhost/tag/john-oliger-co/"
  - name: "TS 2068"
    slug: "ts2068"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts2068/"
model:
  - name: "Timex/Sinclair 2068"
    slug: "ts-2068"
    taxonomy: "model"
    url: "http://localhost/model/ts-2068/"
genre:
  - name: "Hardware"
    slug: "hardware"
    taxonomy: "genre"
    url: "http://localhost/type/hardware/"
  - name: "Miscellaneous hardware"
    slug: "miscellaneous-hardware"
    taxonomy: "genre"
    url: "http://localhost/type/miscellaneous-hardware/"
company:
  id: 10990
  title: "John Oliger Co."
  type: "company"
  url: "http://localhost/company/john-oliger-co/"
price: 15.95
rarity: "Uncommon"
related_content:
  - id: 35597
    title: "The John Oliger Co. Product Lists"
    type: "document"
    url: "http://localhost/document/the-john-oliger-co-product-lists/"
adverts:
  - publication:
      - id: 26461
        title: "Update July 1988"
        type: "issue"
        url: "http://localhost/issue/ts-2068-up-date-july-1988/"
    advert_page: "48"
  - publication:
      - id: 26813
        title: "ZXir QLive Alive! v4 n1"
        type: "issue"
        url: "http://localhost/issue/zxir-qlive-alive-v4-n1/"
    advert_page: "40"
companies_products:
  - id: 10990
    title: "John Oliger Co."
    type: "company"
    url: "http://localhost/company/john-oliger-co/"
---

# Vpp Power Supply

This small single sided board provides 4.4 volts, 21 volts, and 25 volts DC for use with any programmer offered by the John Oliger Co.

This circuit is designed to put as little stress on the EPROM as possible during programming and is recommended for use with these programmers. The board is supplied with schematic, assembly instructions, and use instructions.

TS2040 Printer’s power pack may be used as substitute for transformer with suitable connector.