1. To operate effectively and to maintain the integrity of the package, the
emitter must be heat sunk. A proper heat sink will maintain a package
temperature of less than 120C.
2. The input electrical pulse should have sufficient energy to produce a
maximum filament temperature of 1000K. Use Figure 1 on the
pulse duration, frequency,
input voltage page to determine on-pulse
duration to use for the operating frequency and voltage chosen. Other voltages are possible either by interpolation
of the graph or by consulting the factory. The nominal resistance of the
emitter is 2.4 ohms measured across the leads where they enter the glass
seals.
3. Please note that these values assume that the package is maintained at
50C. If the package is maintained at a higher or lower temperature, then the
filament temperature will vary in a similar manner.
4. Warning: care must be taken when using voltages higher than 2.4V (the
steady state maximum voltage) because long duration pulses can overheat the
filament if it is not modulated properly.