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Crystal Set & One Tube Radio Plans Plans & Instructions
As one of the largest electronic component and power supply distributors, we take pride in offering customers a wide-ranging selection of in-stock products at competitive prices.
Use these plans to make a simple seismometer; build a sun photometer to make accurate measurements of the atmosphere; study rain, lightening, and sunlight; and build a wide variety of lightwave and radio communication circuits. This is a compilation of three of Mims's best-selling notebooks: Science Projects; Environmental Projects; and Communication projects.
Do you want to control a standard wall outlet device with your microcontroller, but don’t want to mess with the high-voltage wiring? The IoT Power Relay is a controllable power relay equipped with four outputs that help you create an Internet of Things project with safe, reliable power control. With the IoT Power Relay you can easily control the power going to a device with an Arduino, Raspberry Pi or other single-board computer or microcontroller. It provides an alternative to the Power Switch Tail.
The IoT Power Relay is designed to allow you to safely control an outlet device that operates at 3--48VDC or 12--120VAC. Each IoT Power Relay features a single input (from the included C13 power cable) to four outputs: one normally on, one always on, and two normally off. The durable SPDT control relay is rated at 30/40A, for 400,000 operations.
used and NOS industrial and electronic parts
Australia's Largest range of Electronic Kits and Components for the Radio Experimenter
SMD, SMT, BGA, QFN & PCB Soldering & De-Soldering Rework & Repair Preheating, Dispensing Solutions
Premium Forced Convection Hot Air Reflow Soldering & Preheating Equipment & Supplies & Fume Extraction. The World's Very 1st & Only Modular Benchtop Solutions. You Can Build Up As Your PCB Needs Grow. Ideal for Labs!
Industrial LED Digital Timers, Clocks, Stopwatches, & more
Archives of Ham Radio Magazine
A variety of new and used vintage and hard to find radio components for home brew projects including:
I make no claims for technical accuracy, good design, or necessarily even originality for the contents of these pages. Rather, I am a simple enthusiast attempting to convey my love and enjoyment of radio, electronics, and computing and perhaps to inspire YOU to build something too. The following pages document projects that I have built over a period of 30 years. Wherever applicable I have named sources and references.
Radio Hobbyist’s Designbook or RHdb (for short) was designed to guide you into design of
electronics apparatus that relates to radio. It assumes you know something about electronics
but you can skip Chapters which cover familiar subjects. Mathematics needed in design is down
to simple algebra and trigonometry. Topics cover the frequency spectrum of DC through VHF.
You must supply the brainpower. But RHdb can be your main reference, a guidance toreaching
your personal hobby goal. RHdb is written in a sort of Reader’s Digest format: Short and
to-the-point, covering things simply with a minimum of words. Grouping is in 5 sections as
givenbelow with a synopsis of Chapters
Fiberglass Preformed Shapes, Fiberglass Masts, RF Connectors and Adapters, Vacuum Capacitors, Vacuum Relays, Bristol Wrench Tools, RF Components & more! Max-Gain Systems offers fiberglass preformed shapes, Fiberglass Marine Products, Fiberglass Antenna Products, Fiberglass Connecting/adapting products and accessories, RF Communications components including: RF connectors and adapters, variable vacuum capacitors, fixed vacuum relays, and an ever expanding array of surplus items. We also carry Bristol Wrench spline and hex tools.