DIY Battery-Operated Audio Signal Generator | Solve Ground Loop Issues! #pcbway#

Only $5 for 10 PCBs and every new member get $5 bonus. + Express 24 hour / 48 hour service on https://www.pcbway.com/ ➠ ➠ ➠ In this video, I showcase my custom-designed, portable audio signal generator. Built to run on batteries, this tool eliminates earth-ground referencing issues that plagued one of my previous projects. Using traditional signal generators and scopes, I accidentally created ground loops that shorted parts of my circuit—this generator solves that problem completely. Inspired by online designs but tailored to my personal needs, this simplified signal generator is compact, easy to use, and highly adaptable. The PCBs are available in the PCBWay share section, so you can customize it to your requirements and avoid similar challenges in your own projects. I also created a custom 3D-printed enclosure to make it fully portable and practical. Watch as I explain the design, build process, and demonstrate its functionality in real-world applications. I’ve provided everything you need to build your own, on my Google Drive, including: ✅ Gerber files ✅ Schematic ✅ 3D print files for a custom enclosure Want to build it? Order the PCBs directly from PCBWay using the links below. 🔗PCBWay Shared Relay Board: https://www.pcbway.com/project/sharep... 🔗 Google Drive Folder: https://drive.google.com/drive/folder... 🎥 Other references mentioned in this video: ■ Elliot Sound Products link to Miniature Audio Oscillator: https://sound-au.com/project86.htm ■ Wireless World article - Feb 1982: https://worldradiohistory.com/UK/Wire... 🙏 Want to support the channel? ●●●●●●   / mcaldeira   https://paypal.me/macaldeira #DIYTestEquipment #AudioSignalGenerator #PortableSignalGenerator ●●●● HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM ●●●● ✿ DIY TEST GEAR: The title says it all:    • Zener Diode Tester - Part 1. The build.   ✿ RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:    • How to safely check the Power Transformer ...   ✿ HowTo's: Various videos on some simple techniques and projects:    • Extend tube radio FM band above 100MHz wit...   ✿ DIY CAPACITOR LEAKAGE TESTER PROJECT: One of the most viewed projects on my channel, with full design description and build instructions.    • Capacitor leakage tester design & build DI...   ✿ DIY TUBE TESTER PROJECT: Complete design description and build instructions for this really handy device.    • DIY Tube Tester. Working on Power Supply o...   ●●●● Plus full Playlists on some other completed restoration projects on this Channel ●●●● 📻 PHILIPS BX750A:    • Philips BX750A tube radio restoration - Pa...   📻 TELEFUNKEN OPUS 2114:    • Telefunken Opus 2114 stereo tube radio res...   📻 SABA UW-175-Z 3D:    • Saba UW 175-Z 3D tube radio restoration - ...   📻 GRUNDIG 1070:    • Grundig 1070 tube radio restoration - Part...   📻 SCHAUB-LORENZ GOLDY 58 type 3020:    • Schaub-Lorenz Goldy 58 type 3020 tube radi...   📻 BUSH VHF64:    • Bush VHF64 tube radio restoration - Part 1...   📻 GRUNDIG 3060A:    • Grundig 3060a tube radio restoration - Par...   📻 TELEFUNKEN OPERETTE 8:    • Telefunken Operette 8 tube radio restorati...   📻 GRAETZ SUPER 171W:    • Graetz Super 171W tube radio restoration -...   📻 LOEWE-OPTA MAGNET 3737W:    • Loewe-Opta Magnet 3737W tube radio restora...   📻 BRAUN ATELIER 3:    • Braun Atelier 3   📻 LOEWE-OPTA TRUXA STEREO 4741W:    • Loewe-Opta Truxa Stereo 4741W   📻 GRAETZ COMEDIA 616:    • Graetz Comedia 616 tube radio restoration ...   📻 SABA FREIBURG W2:    • Saba Freiburg W2 (WII) restoration   📻 GRAETZ MUSICA 4R417:    • Graetz Musica 4R417 restoration