14mm symbol tube manufactured by Siemens
The ZM1133 is a clear glass symbol tube manufactured by Siemens. It can display the plus and minus sign and a sine-wave symbol. This tube was probably used in measurement devices such as multimeters.
|Symbol height (mm)||14|
|Starting Voltage (typ)||170 V|
|Maintaining Voltage (typ)||140 V|
|Current per Segment||2mA|
|Reccomend Resistor||15kOhm @ 170V|