|
When I was working years ago on HMAS Melbourne they had a plant for producing dry nitrogen for the airplane ties. It was very handy because we used to put dry nitrogen in the aerial coupler for our transmitters.
Interesting side light to this was we pressurised these aerial couplers to about 15 lb/sq in and wonderd why thy burnt out. The reason
was the protective spark gap on the network would break down at 1 or 2 psi and fail safe. However pressurising to 15 PSI almost doubled the breakdown voltage. As a result the coil caught fire instead of shutting the system down. After this we reset the spark gap and limited the pressurization to 6 PSI. No more burn outs.
Barry
PS Getting Dry nitrogen was never a problem when in the field I could always get it from the nearest CIG depot
|