Hobby Projects - Insulation tester, LED Circuits, Meters.

Tuesday, December 09, 2008

The Circuits Shop - Electronics in Meccano

The Circuits Shop - Electronics in Meccano
The Electronics in Meccano Circuits Shop gives you access to the entire Maplin Electronics catalogue. In addition to the essential components and tools you'll need as an electronics hobbyist, Maplin stock a wide range of electrical items for your home, car, computer and elsewhere.
Electronics in Meccano
Articles on motor control, components, and practical matters like soldering, along with full shopping lists for each circuit described.
  • Remote Controlled Locomotive
  • Horizontal Electric Engine
  • Constructing Circuits
  • Building a Power Supply
  • Simple Motor Control from AC

Electronic Kits and Tools ApogeeKits

Electronic Kits and Tools ApogeeKits

Home of high quality electronic kits, circuits, tools, test equipment, instruments, tutorials, products and plans for the beginner hobby kit builder to professional engineers and technicians.


Monday, December 08, 2008

Heathkit Educational Kits

Heathkit was a well known supplier of electronic kits from 1947 through the early 1990's (although no new kits were developed after 1986). An incredible number of kits were offered including test equipment, amateur and SWL radio, audio, televisions, computers, robotics, automotive and other items difficult to categorize.

Heathkits - Learning with Practical Electronics

THD Improvement kit for IG-18 series audio generators

THD Improvement kit

"The meter buffer is a crucial part of improving the THD specification of the IG-18. The non-linear loading of the analog output can create additional harmonic components due to the non-linearity of the diodes used to drive the meter."

History and Antiquity

In 1947, Heath introduced its first electronic kit, an oscilloscope that sold for US$50 -- the price was unbeatable at the time, and the oscilloscope went on to be a huge seller. Heathkit Wiki.

The Heathkit Virtual Museum, a tribute to the Heathkit era-a time when building electronic kits was a favorite pastime for many electronics hobbyists. This commemorative virtual showcase takes you back to the Heathkit age which began in the late 1940's and lasted through the early 1990's.

Then you ought to look around at Bill Wilkinson's Heath Company Page if you want to know more.

Sunday, December 07, 2008

Quasar Electronics - Hobby eStore

Quasar Electronics - Hobby eStore

 Bipolar Stepper Motor Chopper Driver

Electronic Kits, Modules, Hobby Projects UK Superstore.

Bipolar Stepper Motor Chopper Driver

Features

  • Easily adjustable motor current (0.A to 2A)
  • Full and Half stepping modes
  • Step and Direction inputs
  • Synchroniseable when using multiple drivers
  • Enable input can be connected to ground to disable motor

New bipolar chopper drive allows you to get better performance from your stepper motor. It uses a dual full bridge motor driver based on SGS Thompson chips L297 & L298. Motor current for each phase is set using an on-board potentiometer and the controller is capable of handling motor winding currents of up to 2 Amps per phase.