The Fluorescent Coated Medium Pressure Mercury Lamp as a First Attempt to Achieve a Light Source for Esoteric Purposes
http://lightcommunitiesdevelopment.blogspot.com/p/lights-for-esoteric-purposes-description.html
NOTICE!
This post is NOT enough based on scientific data.
As a whole, please consider it for LEISURE only.
RESEARCH PROPOSAL
What is it to be, how it looks like...
What to put together from what is available in nowadays tech...
- Proposed shape/outlook: A fluorescent coated ED28/ED90 bulb shape with an E40/Mog (or E33) screw cap. As case may be, also a ED37/ED120.
- Proposed/expected rated power range: 75W for ED28/ED90 bulb, and 150W for ED37/ED120 bulb.
- Expected compatible ballasts: Mercury or metal halide lamp ballasts of 70/75/80W, in the first case, and 150/175W ballast in the second case.
- Discharge tube: That of the shape used for 400W mercury lamp, but with electrodes and filling similar to the 75/80 mercury lamp for the first case, and that of the 1000W discharge tube with electrodes and fillings of the 175W mercury discharge tube in the second case.
In fact there is a larger 75 or 150W arc-tube but with proper (not oversized) electrodes and gas filling in each of cases.
- Fluorescent Coating: That in use for coloured cold cathode 'neon signs' (in fact Ar+Hg) or to the coloured hot cathode fluorescent tubes, corresponding to the full range of colors achieved with all of these.
There is the need of sufficient amount of spectral emission (of the medium pressure arc discharge) in the appropriate wavelengths which properly match the sensivity (in wavelength terms) of the coating, in order to have a convenable conversion work of the phosphorous coating.
The research goal is to find how much can be decreased the pressure in an arc-tube of this type in order to achieve a convenable output of UV wavelength spectrum for the fluorescent coating in discussion, and a moderate temperature of the outer bulb.
What to expect in fact with a 75; 150W mercury lamp, oversized in both the arc tube and the fluorescent coated outer bulb, but with its proper electrodes and Ar/Hg filling...?
The lamp will be connected with the 75/80W, as case with the 150/175W ballast...
The expectance is that after the warm-up of the discharge at the intended lowered pressure, the current should be around the rated current of the ballast (secondary winding, if it's a transformer type). Let say 0,7...0,9A for the first case and 1,5...1,8A for the second one.
Discussion to continue...
Related Links:
The Effects of Mercury Vapour Pressure: http://www.lamptech.co.uk/Documents/M3%20Spectra.htm
MA Medium Pressure Lamps: http://www.lamptech.co.uk/Documents/M8%20MA.htm
RESEARCH PROPOSAL
What is it to be, how it looks like...
What to put together from what is available in nowadays tech...
- Proposed shape/outlook: A fluorescent coated ED28/ED90 bulb shape with an E40/Mog (or E33) screw cap. As case may be, also a ED37/ED120.
Depiction of ED28 and ED37 medium pressure discharge lamps with sized arc tube, and clear (uncoated) outer bulbs, for a better description of inner details.
- Proposed/expected rated power range: 75W for ED28/ED90 bulb, and 150W for ED37/ED120 bulb.
- Expected compatible ballasts: Mercury or metal halide lamp ballasts of 70/75/80W, in the first case, and 150/175W ballast in the second case.
- Discharge tube: That of the shape used for 400W mercury lamp, but with electrodes and filling similar to the 75/80 mercury lamp for the first case, and that of the 1000W discharge tube with electrodes and fillings of the 175W mercury discharge tube in the second case.
In fact there is a larger 75 or 150W arc-tube but with proper (not oversized) electrodes and gas filling in each of cases.
- Fluorescent Coating: That in use for coloured cold cathode 'neon signs' (in fact Ar+Hg) or to the coloured hot cathode fluorescent tubes, corresponding to the full range of colors achieved with all of these.
There is the need of sufficient amount of spectral emission (of the medium pressure arc discharge) in the appropriate wavelengths which properly match the sensivity (in wavelength terms) of the coating, in order to have a convenable conversion work of the phosphorous coating.
The research goal is to find how much can be decreased the pressure in an arc-tube of this type in order to achieve a convenable output of UV wavelength spectrum for the fluorescent coating in discussion, and a moderate temperature of the outer bulb.
What to expect in fact with a 75; 150W mercury lamp, oversized in both the arc tube and the fluorescent coated outer bulb, but with its proper electrodes and Ar/Hg filling...?
The lamp will be connected with the 75/80W, as case with the 150/175W ballast...
The expectance is that after the warm-up of the discharge at the intended lowered pressure, the current should be around the rated current of the ballast (secondary winding, if it's a transformer type). Let say 0,7...0,9A for the first case and 1,5...1,8A for the second one.
Discussion to continue...
Related Links:
The Effects of Mercury Vapour Pressure: http://www.lamptech.co.uk/Documents/M3%20Spectra.htm
MA Medium Pressure Lamps: http://www.lamptech.co.uk/Documents/M8%20MA.htm
