Hobby Projects - Insulation tester, LED Circuits, Meters.

Saturday, September 09, 2017

Learn thru Hobby Electronics

hobby-electronics.info information site electronics hobby. For beginners or learners taking an electronics course! would be a fun way to start. Electronics Projects page has some projects with a PCB layout for easy building too.

Learn thru Hobby Electronics

Learn thru Hobby Electronics

The Course - "We start with a few lessons about voltage, current en resistance. Next, we'll discuss power dissipation and capacitors, diodes and transistors. We now have enough knowlegdge to build a simple power supply. And after a few lessons about differential amplifiers and operational amplifiers, we are even able to design and build a professional lab power supply."

Tuesday, September 05, 2017

Thermostat circuits - Craig Forsythe

The circuits below are variations on basic thermostat designs that can be used to control either heating or cooling devices.

Potential applications include such diverse jobs as opening flaps or controlling heat in greenhouses, powering automatic fans that only cut in when needed,

Thermostat circuits - Craig Forsythe

Thermostat circuits - Craig Forsythe

The 311 is a purpose-built comparator chip (these circuits work by comparing a set voltage with a changing one produced by the inversely temperature-sensitive thermistor). For this application, however, it's a bit like using a Ferrari to do the work of a wheelbarrow. The 311 is very sensitive and, unless significant feedback is provided, stray electrical noise will tend to make it oscillate (the relay will get jittery). ......

Monday, September 04, 2017

MadLab – Inventive electronic kits

Unique, hands-on electronics workshop for children and adults. In the workshop participants solder electronic components onto specially-designed circuit boards.

MadLab - Inventive electronic kits

MadLab has been made possible through the generous sponsorship and support of the Edinburgh International Science Festival, Zot Engineering and Microchip.

MadLab – Inventive electronic kits

A really useful tool for the budding electronics engineer - a digital frequency meter. New and improved version.
  • input signal range from about 15Hz to 8MHz
  • new feature - bypass switch for low-frequency TTL-level signals from 1Hz
  • internal accuracy +/-1Hz
  • 4 digits of displayed accuracy
  • input conditioning amplifier sensitive to 50mV
MadLab presents an absolute beginner's guide to electronics. Following this short course will lead you from basic ideas about electronics right up to an understanding of how the simple MadLab kits actually work.