Hobby Projects - Insulation tester, LED Circuits, Meters.

Sunday, April 03, 2016

Alan Yates Laboratory – vk2zay

"I was born in the late 1970s, mid-year in the local hospital of a coastal part of Australia? Yet another instance of humanity, one of the 6.6 billion or so of us (4.2 billion back then). Doomed like all of us to live out their days on this rock with some clinging gases orbiting a minor star in a relatively quiet part of the local cosmic clump of matter." - Alan Yates

Alan Yates Laboratory - vk2zay

Alan Yates Laboratory – vk2zay

Reflection-pair optical tachometer - The circuit is simplicity itself. There is a red LED to illuminate the target and a photo diode in photo-conductive mode to pick up the reflected light.

One Transistor Voice Transceiver - Building a toy VHF phone transceiver for 3 metres using only one transistor for both TX and RX!

MK484 MW Receiver - A fairly small MK484 based receiver for the AM broadcast band.

40 Metre Spectrum Analyzer - My go at making a JF1OZL-style spectrum analyser for 40 metres.

Nano-Henry Inductance Meter - My implementation of Drew Diamond VK3XU's "Nano-L", plus how I constructed and trimmed my calibration inductances.

Engineering Calculators - Useful online calculators for the Hobby Enthusiast. Ham Radio People and also students and Engineers,

LED Dimming Lamp

Build it or go for a kit, this is a nice design for a Table or Desktop lamp. You will need to fix in a Enclosure with a Diffused Plastic or Glass Filter Front.

18 LED dimmable LED lamp

LED Dimming Lamp

This circuit is a dimmable white LED lamp array with 18 LEDs. The lamp brightness is regulated as long as the input voltage is above 10.5V. A low-dropout analog voltage regulator is used for a simple and relatively efficient design. The lamp produces enough light to use as a a reading lamp or a small work lamp

Saturday, April 02, 2016

Learn about the Eternal Torchlight

I found this bright flash of information when i was looking for supercap vendors

I  was enlightened about this Battery Less wonder. This is a boon for rural areas and an emergency tool which depend only on your will and your tendons. Learn about supercaps, dynamo and White LED's here.

"Ever been stuck needing an illuminant, but with no batteries or power source to hand? then check out this article by Richard J. Nelson on the LED Forever Flashlight."

Learn about the Eternal Torchlight

This is a Linear Dynamo LED Torch which uses a SuperCapacitor to store the energy. Easy to repair and maintain if necessary.

Forever Flashlight

It uses no batteries and requires only the single LED included. You can even leave the flashlight unused in your car's glove box for years and you'll always get that all-important light when you need it most. Forever Flashlight lll pays for itself quickly by saving you the cost of batteries and bulbs.

ExcaliburProducts.com - 21785 SW TV Hwy, Suite Q, Aloha, Oregon 97006 USA