Document ID: chunk:federal_register_of_legislation:F2023C00165:reg:12v:p1
Version: federal_register_of_legislation:F2023C00165
Segment Type: reg
Provision Reference: reg 12V (pt 1/2)
Character Range: 203258–206992

12V  d + 0.4  d + 0.8  0.35  6.6  5.7

d = diameter of filament
The filament position is checked solely in directions A and B as shown on sheet HIR2/1.
The beginning of the filament as defined on sheet HIR2/2, note 10/ shall lie between lines Z1 and Z2 and between lines Z3 and Z4.
CATEGORY H9

Sheet H9/1
The drawings are intended only to illustrate the essential dimensions of the filament lamp.
Dimensions in mm

    1/ The reference plane is the plane formed by the underside of the beveled lead-in flange of the cap.
    2/ The reference axis is perpendicular to the reference plane and passing through the centre of the 19mm cap diameter.
    3/ Glass bulb and supports shall not exceed the envelope as indicated in Figure 2. The envelope is concentric to the reference axis.
4/ Notes concerning the filament diameter.
    - No actual diameter restrictions apply but the objective for future developments is to have d max. = 1.4mm -
    For the same manufacturer, the design diameter of standard (etalon) filament lamp and filament lamp of normal production shall be the same.
CATEGORY H9

Sheet H9/2

    5/ Glass bulb shall be optically distortion free within the angles gamma1 and gamma2. This requirement applies to the whole bulb circumference within the angles gamma1 and gamma2.
    6/ The internal design of the lamp shall be such that stray light images and reflections are only located above the filament itself seen from the horizontal direction. (View A as indicated in Figure 1, sheet H9/1).
    No metal parts other than filament turns shall be located in the shaded area as seen in Figure 4.
    7/ The offset of the filament with respect to the reference axis is measured only in viewing directions A and B as shown in Figure 1 on sheet H9/1. The points to be measured are those where the projection of the outside of the end turns nearest to or furthest from the reference plane crosses the filament axis.
    8/ Offset of bulb with respect to filament axis measured in two planes parallel to the reference plane where the projection of the outside of the end turns nearest to or furthest from the reference plane crosses the filament axis.
CATEGORY H9

Sheet H9/3

Dimensions in mm
13/                                                       Tolerances

Filament lamps of normal                                  Standard filament lamp
production
e 9/                                                      25                               11           +/- 0.10
10/                                                       4.8                              /            +/- 0.10
f 9/ 10                                                                                    11
g 9/ /                                                    0.70                             /            +/- 0.30
                                                                                  +/- 0.5
h1                                                        0                                11    +/- 0.10 12/
h2                                                        0                                /     +/- 0.15 12/
                                                                                           12
                                                                                           /
gamma1                                                    50 degees                                      -
                                                          min.                    -

gamma2                                                    40 degees               -                      -
                                                          min.
Cap PGJ19-5 in accordance with IEC 61 (sheet 7004-110-1)
ELECTRICAL