C
Clive Mitchell
- Jan 1, 1970
- 0
Remember we said that he first person to get a cold cathode compact
fluorescent lamp would sacrifice it for the betterment of the group?
Here it is...
http://www.emanator.demon.co.uk/cclamp.jpg
Not much to write home about.... The VERY simplified schematic doodled
in the picture shows that it's basically a standard CFL circuit, but
using a step up transformer instead of the choke. This lamp in
particular is notable for the complete lack of suppression components
and no electrolytic capacitor.
The lamp is quite noisy in operation and as you would expect with the
lack of smoothing you get a 100Hz (50Hz) buzz with a relatively high
pitched squeak superimposed.
I guess the lack of an electrolytic to dry out is good, but the
conventional transformer for driving such a long thin tube is a bit
dubious from a winding insulation perspective.
fluorescent lamp would sacrifice it for the betterment of the group?
Here it is...
http://www.emanator.demon.co.uk/cclamp.jpg
Not much to write home about.... The VERY simplified schematic doodled
in the picture shows that it's basically a standard CFL circuit, but
using a step up transformer instead of the choke. This lamp in
particular is notable for the complete lack of suppression components
and no electrolytic capacitor.
The lamp is quite noisy in operation and as you would expect with the
lack of smoothing you get a 100Hz (50Hz) buzz with a relatively high
pitched squeak superimposed.
I guess the lack of an electrolytic to dry out is good, but the
conventional transformer for driving such a long thin tube is a bit
dubious from a winding insulation perspective.