Friday, 29 May 2020

One Wire Electricity

ISLANDS and AREAS of LIGHT Infrastructure Development

Electricity The Single-wire Transmission Electrical System a possible solution for our Islands and Areas of Light

Notice!  The subject of this post refers to only the single-wire transmission system, which does not use a return current through the ground.              

Single-wire transmission line

Single Wire Electrical System

One-Wire Line System for Transmitting Energy

Single-wire electric transmission line

Tuesday, 7 April 2020



The White, Pink, Blue, and Golden Light Bulb  a lighting source for esoteric use.

It is proposed to come in a form of a 'filament LED' bulb of ED90 or ED120 shape, with a number of 8 LED-filaments, 2 for each color,
– in a light color  sequence of White, Pink, Blue, and Golden, with that of same color being on the opposing points of the 2 frames on which the LED-filaments, in number of 8, are positioned.

[Images are only for illustration and educative purposes]

Discussion to continue...

Monday, 17 February 2020


ISLANDS and AREAS of LIGHT Infrastructure Development

Electricity – The 235V/10kHz and 36V/50kHz power distribution, a later option for our Areas of Light

On left: the proposed 440V, 20KHz HFAC power distribution
On mid and on right: the proposed HFAC 235V/10kHz and 36V/50kHz power distribution

Discussion to continue...

Related post:

Reference material:

Ideas for Future Electric Aircraft System
Asian Power Electronics Journal, Vol. 9, No. 2, Dec. 2015, p.48-51;
S. Raghu Raman, K. W. Eric Cheng, N.C. Cheung;
Power Electronics Research Centre, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong

Monday, 20 January 2020

Wednesday, 15 January 2020



The 'Laser Diode Bulb' of 407nm – a possible high efficiency violet light source for esoteric use.

On left: A 'filament LED' bulb illustrating the uncoated (no phosphor) array of laser diodes;
On right: A coated (with phosphor) ED-shaped bulb illustrating the finished 'laser diode bulb'

Filament componence details

[Images are only for illustration and educative purposes]

The case of the coated lamp (image on right, above) has to be considered of 'remote phosphor' type, from a LED point of view. 
As shown in the lower image, the coatings (outer layer) of the filament (laser diodes array) are with no phosphor, but diffusing only. 
The phosphor coating is on the inner side of outer bulb, similar to the coated HID lamps, in order to work in this way. 
In this case a large area of phosphor coating can be achieved, and, it is at a certain distance from the heat source (filament) preventing the overheating of the phosphorous.

Research needs to be conducted...

Related links:


General Thermal Management Advice for Laser Diodes

LD specially suited for remote phosphor configurations

Related posts

Cobra's up to date post: