New project

My dive torch gave up the ghost. Well the Bulb did, and seeing as the bulb is one of the more expensive parts of an extremely simple device this triggered me to start a project i had been mulling over for a while now. The first part of the project is to replace the standard bulb with an LED. This should hopefully improve efficiency and brightness underwater. The second part is a little more complex and is still in the fluid / ideas / development / research type stage. The though is that switching the LED at high frequency could possibly improve light penetration underwater. This technique has long been implemented for improving the efficiency of LEDs so this should be fairly simple. Goals for the future of the project include – self monitoring circuit to maximise power into the LED – self calibrating frequncy to maximise light penetration. – smart recording of random data So of the the drawing board I go and hopefully some block diagrams and circuits will follow Till then

When theory and reality collide

Im sure everyone has hit this wall at some point, when the thoretical equation does not give the exact result in the real world. These last few weeks i have been battling this problem in the form of Coil Inductance’s. I have a need for a ver specific and relitively low inductance with my latest pience of work and figuring out the kinks in the real world vs thoretical has been a right problem.


This equation will only hold up if a lot of real world factors are controlled. In addition to the obvious factors given in the equation ( Coil Diameter, Number of turns, Length of winding) the uniformity of pitch (essenialy the length & number of turns) can have a dramatic effect of low inductance coils.


My theory is that variation in the coil winding has an effect of the quality of the flux field and therefore the inductance of the overall coil. When i have more information i shall report further . . . . .