Expertise

Current thoughts on how we might make our own gas filled light bulbs in the future.

• Blow glass tubes.
• Build in a electrode at each end.
• Evacuate by using several old refrigeration compressors in series. I have tested refrigeration compressors as vacuum pumps. They pull a pretty good vacuum.
• Fill with sodium, mercury, or other substance yet to be determined.
• Seal at a given low pressure.
• Apply high voltage to start and a lower voltage to run. The longer the tube, and the higher the pressure, the greater the voltage of operation.

Would need to be further developed and tested.

Offered by Mike.