---
product_id: 92262477
title: "Jameco Valuepro TR4820-91-R Power Transformer, AC Wire Leads, 9W, 9 VCT, 1A, 115V/230V, 1.67\" H x 1.82\" L x 2.43\" W"
brand: "jameco valuepro"
price: "$36.55"
currency: USD
in_stock: true
reviews_count: 8
url: https://www.desertcart.us/products/92262477-jameco-valuepro-tr4820-91-r-power-transformer-ac-wire-leads
store_origin: US
region: United States of America
---

# 9W Power Rating Compact Size 9VCT Output Jameco Valuepro TR4820-91-R Power Transformer, AC Wire Leads, 9W, 9 VCT, 1A, 115V/230V, 1.67" H x 1.82" L x 2.43" W

**Brand:** jameco valuepro
**Price:** $36.55
**Availability:** ✅ In Stock

## Summary

> 🔋 Power Your Passion with Precision!

## Quick Answers

- **What is this?** Jameco Valuepro TR4820-91-R Power Transformer, AC Wire Leads, 9W, 9 VCT, 1A, 115V/230V, 1.67" H x 1.82" L x 2.43" W by jameco valuepro
- **How much does it cost?** $36.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/92262477-jameco-valuepro-tr4820-91-r-power-transformer-ac-wire-leads)

## Best For

- jameco valuepro enthusiasts

## Why This Product

- Trusted jameco valuepro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Design:** Measuring just 1.67" H x 1.82" L x 2.43" W, it fits seamlessly into any project.
- • **Power Up Your Projects:** Delivering a robust 9W power rating, this transformer is perfect for your DIY electronics.
- • **Color-Coded Convenience:** Easily identify connections with a clear color-coded wire system.
- • **Lightweight & Efficient:** At only 0.7 lbs, it’s easy to handle without compromising on performance.
- • **Versatile Voltage Options:** Dual primary voltage of 115/230V ensures compatibility with various setups.

## Overview

The Jameco Valuepro TR4820-91-R Power Transformer is a compact and efficient solution for your electronic projects, featuring a 9W power rating, dual voltage options, and a user-friendly color-coded wire system.

## Description

Power transformers have both single and dual voltage inputs and center-tapped outputs. This makes them the perfect choice for power supply design or for use in transformer, Rectifier and filter circuits.

## Features

- Primary voltage: 115/230Vac @ 50-60hz and secondary voltage: 9Vct @ 1A
- Primary wire color code: black, white (center tap), red and secondary wire color code: blue, black (center tap), blue
- Power rating: 9Va
- Size: 1.82"L x 2.43"W x 1.67"H
- Weight: 0.7 lbs

## Images

![Jameco Valuepro TR4820-91-R Power Transformer, AC Wire Leads, 9W, 9 VCT, 1A, 115V/230V, 1.67" H x 1.82" L x 2.43" W - Image 1](https://m.media-amazon.com/images/I/21k-pUOfQ9L.jpg)

## Questions & Answers

**Q: is secondary ac or dc ?**
A: It is AC

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Solid transformer
  

*by L***S on Reviewed in the United States on October 6, 2021*

I used this transformer for the AC supply portion of a home-built Commodore 64 power supply, which it handles admirably. While a slightly better labeled wiring diagram would have been nice, it didn't take all that much fiddling with a multimeter to be sure which wires to use. (Nobody wants to fry vintage hardware because you hooked it up wrong without checking...)For those who want a confirmation - For 110v connect mains to black/white and then the computer side gets both blue wires - it's 9V across the full coil.While I haven't had it in operation all that long, I'd happily recommend this product.

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    Missing specs
  

*by J***. on Reviewed in the United States on March 21, 2024*

As others have stated, it's missing specs. I've attached to this review. It seems ok quality, although its quite noisy.The secondary actually has three different possible outputs.  The inner and outer tap on the secondary winding produce 9v. The center tap in 6v.  The primary can be either 115v or 220v.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Solid, Reliable Transformer for DIY Projects
  

*by L***M on Reviewed in the United States on September 15, 2024*

The Jameco Valuepro TR4820-91-R Power Transformer is a dependable choice for anyone working on low-power electronics projects. Its 9V center tap output and 1A current rating make it versatile for a range of applications, from powering small circuits to use in DIY power supplies. What stands out is the solid build quality—you can tell it's built to last, with sturdy AC wire leads and a compact form factor that fits easily into most enclosures.The dual voltage input (115V/230V) is a nice feature, giving flexibility for different power setups, and the 9W power rating is more than sufficient for most small electronics projects. At its size, it’s compact enough to work into tight spaces without any hassle.For the price, this transformer offers great value and performance. It’s reliable, easy to integrate, and perfect for hobbyists or anyone needing a straightforward power transformer solution. Highly recommended for DIY electronics!

## Frequently Bought Together

- Jameco Valuepro TR4820-91-R Power Transformer, AC Wire Leads, 9W, 9 VCT, 1A, 115V/230V, 1.67" H x 1.82" L x 2.43" W
- MEAN WELL RS-15-5 AC to DC Power Supply Single Output, 5V 3 Amp 15W
- 3Dman 15A 250V Rocker Switch On/Off Power Socket Inlet Module Plug 10A Fuse Switch with 18 AWG Wiring 3 Pin - 2pcs

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/92262477-jameco-valuepro-tr4820-91-r-power-transformer-ac-wire-leads](https://www.desertcart.us/products/92262477-jameco-valuepro-tr4820-91-r-power-transformer-ac-wire-leads)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-21*