[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-129814-en":3,"doc-seo-129814-105":31,"detail-sidebar-cat-0-en-105":93},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":20,"is_deleted":4,"is_public":21,"is_downloadable":21,"audit_status":21,"page_count":22,"language":23,"language_code":24,"site_id":25,"html_lang":24,"table_of_contents":26,"faqs":27,"seo_title":28,"seo_description":14,"update_tm":29,"read_time":30},129814,962085564381,"Clementine","https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8",6,"Technology","Practical Electronics - Volume 55 - Issue 07 - July 2026","Practical Electronics July 2026 issue (Volume 55, No. 07) brings a range of hands-on electronics coverage across projects, measurement techniques, circuit design and radio topics. Key features include the RP2350B development board, a USB solar charging project, and the SmartProbe for voltage and continuity measurements. It also delivers practical audio and filter content, PCB design history, mains earthing systems, RF wireless teach-in, PCB inspection benefits, and power electronics on rectifier-based AC-DC conversion, supported by regular editorial and services.","Practical Electronics  \nThe UK’s premier electronics, computing and maker magazine  \nMax’s Cool Beans Playing games by tilting our console  \n\n| Teach-In 12 Part 9: RF sources and oscillators | Audio Out How symmetricisers boost radio volume |\n| --- | --- |\n\nCircuit Surgery Sending & receiving balanced audio  \nRP2350B Dev Board: A more powerful Pico 2  \nAudio Out: a flexible all-pass filter system  \nThe SmartProbe: make measurements  \nPLUS! more easily  \nTechno Talk – the history of PCB design and track routing The Fox Report – balcony solar may be coming to the UK Mains Earthing – why it’s needed & how it varies worldwide  \nJul 2026 £5.99  \n07  \n9 772632 573030  \n[www.electronpublishing.com](www.electronpublishing.com)  @practicalelec  \n practicalelectronics  \nPractical  \nElectronics  \nVolume 55. No. 07 July 2026  \nISSN 2632 573X  \nContents  \n\n| \u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>Made in Australia & the UK. Written in Britain, Australia, the USA and Ireland.\u003Cbr>Read everywhere.\u003Cbr>© Silicon Chip Publications Pty Ltd 2026\u003Cbr>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 August 2026 issue of Practical Electronics will be published on Tuesday, 7th of July, 2026 (see p84). | Projects and Circuits\u003Cbr>RP2350B Development Board by Geoff Graham & Peter Mather 4\u003Cbr>Think of this as the Raspberry Pi Pico 2’s bigger sibling – more pins, more I/O, more speed, more storage and more memory. It’s perfect for breadboarding, too. Like the Picos, it can be purchased pre-assembled.\u003Cbr>USB Solar Charging by Julian Edgar 20\u003Cbr>This simple electronic project allows you to charge and power all your USB devices from a low-cost solar system. It’s inexpensive to put together, and once you’ve built it, charging your devices won’t cost a cent!\u003Cbr>The SmartProbe by Andrew Levido 23\u003Cbr>The SmartProbe is an extremely handy little device for making voltage and continuity measurements. It won’t replace your multimeter, but it is designed to be the first piece of test equipment you reach for when debugging or repairing a circuit.\u003Cbr>Series, Features and Columns\u003Cbr>Audio Out by Jake Rothman 10\u003Cbr>All-pass filters, part four – new PCBs & symmetricisers. We start by describing an updated all-pass filter board plus two polarity inversion switches that can be used with it. We then go into a detailed history of symmetricisers used for radio broadcasting.\u003Cbr>Circuit Surgery by Ian Bell 34\u003Cbr>Measuring circuit frequency response using a PC sound card, part 10: differential amplifiers and line drivers. We continue looking at differential line drivers and also consider differential receivers, including practical implementations of both.\u003Cbr>Techno Talk by Max the Magnificent 42\u003Cbr>Tracks and tribulations – a ramble through the evolution of PCB layout, from tape and scalpels to overcaffeinated autorouters and today’s AI-powered tools.\u003Cbr>Mains Earthing Systems by Brandon Speedie 44\u003Cbr>The Earth is an integral part of our power system. It can be used to improve electrical safety, reduce energy losses or save on the cost of a dedicated conductor. Here, we look at the different Earthing systems used worldwide and how they work.\u003Cbr>Max’s Cool Beans by Max The Magnificent 48\u003Cbr>Weird & Wonderful Arduino Projects, part 19: marble mayhem and tilting tomfoolery. We add an accelerometer to our Retro Games Console so we can play by tipping it. This IMU can also measure the rate of rotation and even magnetic orientation.\u003Cbr>Teach-In 12.9: the World of Wireless by Mike Tooley 56\u003Cbr>RF sources and oscilators: this month, we take a deep dive into RF sources, explaining how to get the best out of a variety of phase-locked loop (PLL) signal and marker/generator modules, plus direct digital synthesis (DDS) chips.\u003Cbr>The benefits of PCB inspection reports by Steve Mansfield-Devine (PCBWay) 66 However much you test y","cbCaibE9jjlSrwAs","https://ap.wps.com/l/cbCaibE9jjlSrwAs","pdf",13716204,5,1,88,"English","en",105,"# Projects and Circuits\n## RP2350B Development Board\n## USB Solar Charging\n## The SmartProbe\n# Series, Features and Columns\n## Audio Out - All-pass filters and symmetricisers\n## Circuit Surgery - Frequency response with PC sound card\n## Techno Talk - PCB layout evolution\n## Mains Earthing Systems\n## Max’s Cool Beans - Arduino projects\n## Teach-In 12.9 - the World of Wireless\n## The benefits of PCB inspection reports\n## Power Electronics, part four\n## The Fox Report","[{\"question\":\"What projects are featured in the July 2026 issue?\",\"answer\":\"The issue includes an RP2350B development board feature, a USB solar charging project, and a SmartProbe used for voltage and continuity measurements.\"},{\"question\":\"Which measurement and audio topics are covered?\",\"answer\":\"Audio Out focuses on all-pass filters and symmetricisers, while Circuit Surgery explains how to measure frequency response using a PC sound card, including differential amplifiers and line drivers.\"},{\"question\":\"What does the Teach-In section discuss?\",\"answer\":\"Teach-In 12.9 dives into the world of wireless, explaining RF sources and oscillators, including PLL signal modules, marker/generator modules, and DDS chips.\"}]","Practical Electronics - Volume 55 - Issue 07 - July 2026 | PDF",1786108781,222,{"code":4,"msg":32,"data":33},"ok",{"site_id":25,"language":24,"slug":34,"title":13,"keywords":35,"description":14,"schema_data":36,"social_meta":88,"head_meta":90,"extra_data":92,"updated_unix":29},"practical-electronics-volume-55-issue-07-july-2026","",{"@graph":37,"@context":87},[38,55,70],{"@type":39,"itemListElement":40},"BreadcrumbList",[41,45,49,52],{"item":42,"name":43,"@type":44,"position":21},"https://docshare.wps.com","Home","ListItem",{"item":46,"name":47,"@type":44,"position":48},"https://docshare.wps.com/document/","Document",2,{"item":50,"name":12,"@type":44,"position":51},"https://docshare.wps.com/document/technology/",3,{"item":53,"name":13,"@type":44,"position":54},"https://docshare.wps.com/document/practical-electronics-volume-55-issue-07-july-2026/129814/",4,{"url":53,"name":13,"@type":56,"author":57,"headline":13,"publisher":59,"fileFormat":62,"inLanguage":24,"description":14,"dateModified":63,"datePublished":64,"encodingFormat":62,"isAccessibleForFree":65,"interactionStatistic":66},"DigitalDocument",{"name":9,"@type":58},"Person",{"url":42,"name":60,"@type":61},"DocShare","Organization","application/pdf","2026-08-28","2026-08-07",true,{"@type":67,"interactionType":68,"userInteractionCount":20},"InteractionCounter",{"@type":69},"ViewAction",{"@type":71,"mainEntity":72},"FAQPage",[73,79,83],{"name":74,"@type":75,"acceptedAnswer":76},"What projects are featured in the July 2026 issue?","Question",{"text":77,"@type":78},"The issue includes an RP2350B development board feature, a USB solar charging project, and a SmartProbe used for voltage and continuity measurements.","Answer",{"name":80,"@type":75,"acceptedAnswer":81},"Which measurement and audio topics are covered?",{"text":82,"@type":78},"Audio Out focuses on all-pass filters and symmetricisers, while Circuit Surgery explains how to measure frequency response using a PC sound card, including differential amplifiers and line drivers.",{"name":84,"@type":75,"acceptedAnswer":85},"What does the Teach-In section discuss?",{"text":86,"@type":78},"Teach-In 12.9 dives into the world of wireless, explaining RF sources and oscillators, including PLL signal modules, marker/generator modules, and DDS chips.","https://schema.org",{"og:url":53,"og:type":89,"og:title":13,"og:site_name":60,"og:description":14},"article",{"robots":91,"canonical":53},"index,follow",{"doc_id":7,"site_id":25},{"code":4,"msg":5,"data":94},[95,99,103,107,111,114,119,124,129,132,136],{"id":21,"doc_module":4,"doc_module_name":47,"category_name":96,"show_sort_weight":97,"slug":98},"Story & Novel",90,"story-novel",{"id":48,"doc_module":4,"doc_module_name":47,"category_name":100,"show_sort_weight":101,"slug":102},"Literature",80,"literature",{"id":54,"doc_module":4,"doc_module_name":47,"category_name":104,"show_sort_weight":105,"slug":106},"Exam",70,"exam",{"id":20,"doc_module":4,"doc_module_name":47,"category_name":108,"show_sort_weight":109,"slug":110},"Comic",60,"comic",{"id":11,"doc_module":4,"doc_module_name":47,"category_name":12,"show_sort_weight":112,"slug":113},50,"technology",{"id":115,"doc_module":4,"doc_module_name":47,"category_name":116,"show_sort_weight":117,"slug":118},7,"Healthcare",40,"healthcare",{"id":120,"doc_module":4,"doc_module_name":47,"category_name":121,"show_sort_weight":122,"slug":123},8,"Research & Report",30,"research-report",{"id":125,"doc_module":4,"doc_module_name":47,"category_name":126,"show_sort_weight":127,"slug":128},9,"Religion & Spirituality",20,"religion-spirituality",{"id":127,"doc_module":4,"doc_module_name":47,"category_name":130,"show_sort_weight":127,"slug":131},"World Cup","world-cup",{"id":133,"doc_module":4,"doc_module_name":47,"category_name":134,"show_sort_weight":133,"slug":135},10,"Lifestyle","lifestyle",{"id":137,"doc_module":4,"doc_module_name":47,"category_name":138,"show_sort_weight":20,"slug":139},19,"General","general"]