Since I am planning to resume this blog, I thought I’d share a fairly recent project. For a magnetic loop antenna build, I needed a variable capacitor that can handle relatively high voltages. These can be somewhat hard to come across today, and you have to work with what you can find on eBay voltage and capacitance wise. That’s why I came up with a variable capacitor that can be mostly 3D-printed, with the addition of some hardware store parts….
In the beginning of their journey, most hobbyists use perfboards or stripboards to assemble their circuits permanently. These boards allow for a lot of flexibility, but the act of wiring any circuit consisting of more than just a handful of components can become quite painstaking. Fortunately, professional PCB manufacturers (like jlcpcb.com for example) offer their services at exceptionally low prices nowadays, so getting your design produced and shipped to you door is affordable for many electronics enthusiasts. However, this option…