Hello Folks, While experimenting with an IN-13 bargraph tube I thought it would be interesting to connect it up to my nixie watch HV supply and see how far the bar would go. Since the voltage of the tube is lower than the nixie tubes, the nixies won't light up when the bar graph tube is wired parallel to the HV (as expected). This means all the current from the HV supply goes through this bar graph tube and make it very easy to measure the HV efficiency.
The drawn battery current is 130mA; battery voltage 3.37V. The average HV supply is 112V and average tube current 3.1mA this would result in a 79% efficiency. However, you can only use the average values if either the tube voltage or tube current is constant; in my case this is not so. So I would say I need to use the RMS values of tube voltage and tube current. If I measure these with a scope, I come to 113V RMS and 3.73mA RMS. This would then result in a 96% efficiency!!! This measuring must be correct, right? Michel -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
