Practical Electronics - Volume 55 - No. 08 August 2026

Aug 7, 2026

A detailed issue of Practical Electronics focused on practical design and hands-on electronics for makers. Key coverage includes a USB‑C Power Monitor project, a RP2350B computer overview, and an explanation of USB‑C Power Delivery. Additional features explore short‑range wireless devices, a new Freeview receiver review, anti‑aliasing and reconstruction filters using PC audio hardware, and active audio crossover circuits. Regular columns add robotics and Arduino projects.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages84

Reading Time3 h 32 min

AccessFree to download

Projects and Circuits

USB-C Power Monitor, part one

The RP2350B Computer

Series, Features and Columns

How USB-C Power Delivery Works

Teach-In 12.10: the World of Wireless

The Fox Report

Circuit Surgery: anti-aliasing & reconstruction filters

Max’s Cool Beans

Power Electronics, part five

Audio Out

Techno Talk

Regulars and Services

Editorial

Reader services

Practical Electronics The UK’s premier electronics, computing and maker magazine Max’s Cool Beans Making test fixtures & building the VFD clock | Teach-In 12
Part 10: short-range RF devices, including LoRa | Audio Out Linear-phase crossovers | | --- | --- | Circuit Surgery Anti-aliasing and reconstruction filters Measure USB voltage, current & power up to 60V/±5A RP2350B Computer: • Overclockable • HDMI video output • Stereo audio • Up to four USB keyboards, mice or game controllers • microSD card socket • Internal flash & RAM • USB-C power input • Compatible with the MMBasic interpreter PLUS! Techno Talk – Self-learning robots and reconfigurable PCBs The Fox Report – Manhattan’s new Freeview receiver box Feature – How USB-C Power Delivery works Aug 2026 £5.99 08 9 772632 573030 [www.electronpublishing.com](www.electronpublishing.com) @practicalelec practicalelectronics Practical Electronics Volume 55. No. 08 August 2026 ISSN 2632 573X Contents |

Made in Australia & the UK. Written in Britain, Australia, the USA and Ireland.
Read everywhere.
© Silicon Chip Publications Pty Ltd 2026
Copyright in all drawings, photographs, articles, technical designs, software and intellectual property published in Practical Electronics is fully protected, and reproduction or imitation in whole or in part are expressly forbidden. The September 2026 issue of Practical Electronics will be published on Wednesday, 5th of August, 2026 (see p80). | Projects and Circuits
USB-C Power Monitor, part one by Tim Blythman 10
It is always handy to know what voltage and current a USB device is using. Now that USB-C is prevalent, it’s time for a USB-C Power Monitor. It can be used for all modern USB-C devices, as well as legacy USB devices, with the right adaptor.
The RP2350B Computer by Geoff Graham & Peter Mather 28
This small computer board can be purchased pre-assembled and comes with a dualcore RP2350B processor, HDMI video output, stereo audio, four USB ports, a microSD card socket, 14MiB of integrated storage, and RAM that’s expandable to over 6MiB.
Series, Features and Columns
How USB-C Power Delivery Works by Andrew Levido 4
The widespread adoption of USB 3.2 introduced the Type-C connector, plus a new Power Delivery (PD) capability that allows up to 100W (20V @ 5A) to be delivered. It is quite a bit more complicated than previous USB power schemes.
Teach-In 12.10: the World of Wireless by Mike Tooley 18
This month, our focus shifts to short-range wireless devices (SRD) . These versatile chips and modules enable data transmission and reception between remote devices without requiring a wired connection.
The Fox Report by Barry Fox 39
A review of the new Manhattan Freesat receiver.
Circuit Surgery by Ian Bell 40
Measuring circuit frequency response using a PC sound card, part 11: anti-aliasing & reconstruction filter circuits. We look at multi-pole active filters using op amps. These filters are handy for reconstruction filters but have many other uses too.
Max’s Cool Beans by Max The Magnificent 48
Weird & Wonderful Arduino Projects, part 20: pogo pins and pixel grins. We get busy creating some test jigs and then start assembling our VFD-based countdown clock, piece by piece.
Power Electronics, part five by Andrew Levido 56
Power factor correction & EMI filtering – we look at circuit design rules to meet EMI regulations. We also describe how conducted EMI can be measured and investigate an example power-factor correction (PFC) evaluation board and circuit.
Audio Out by Jake Rothman 66
A phase-linear crossover board, plus all-pass filters, part five and final notes. We present a circuit and PCB for this special kind of active crossover for loudspeakers. We also have some more information on the NE5532 fiasco mentioned last month.
Techno Talk by Max the Magnificent 74
Scan me!– CynLr’s robots learn by interacting with thei

FAQs

What projects are included in this issue of Practical Electronics?

The issue includes a USB‑C Power Monitor project (part one) and coverage of the RP2350B computer, along with additional circuit features and audio crossover content.

What does the series on USB-C Power Delivery explain?

It explains how USB 3.2 Type‑C Power Delivery works, including how the PD capability can deliver up to 100W and why it is more complex than earlier USB power schemes.

Which circuit topic does Circuit Surgery focus on?

Circuit Surgery covers measuring circuit frequency response using a PC sound card, with a focus on anti‑aliasing and reconstruction filter circuits.

Aug 7, 2026

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