15.5mm numeric tube manufactured by National Electronics
The NL-840VR is a clear glass numeric nixie tube manufactured by National Electronics. It displays numerals from one to nine. Currently there is no more info about this tube, but it seems to be exactly the same as NL-840. Maybe this tube has some foreign specifiations or was made for a specific product. If you have any info about this tube and its usage, i'm happy to hear about it.
|Symbol height (mm)||15.5|
|Starting Voltage (typ)||170 V|
|Maintaining Voltage (typ)||0 V|
|Current per Segment||3mA|
|Reccomend Resistor||8.2kOhm @ 170V, 39kOhm @ 250V, 56kOhm @ 300V according to datasheet (NL-840)|