NL-847
15.5mm symbol tube manufactured by National Electronics
The NL-847 is a clear glass symbol tube manufactured by National Electronics. It can display plus and minus. Its considered "long-life"
| Brand / Manfacturer | National Electronics |
| Same Types | |
| Likely Tyes | |
| Symbol height in mm | 15.5 |
| Characters / Symbols | +,- |
| Decimal point | none |
| Base / Socket | RTS-14 |
| Starting Voltage (typ) | 170 V |
| Maintaining Voltage (typ) | 0 V |
| Current per Segment | 4mA |
| Reccomend Resistor | 7kOhm @ 170V, 33kOhm @ 250V, 50kOhm @ 300V |
