This control box regulated the temperature of the heated PRH28. Furthermore, a port for a function control (pitch LED) and an overvoltage protection are integrated. On-board voltage 27.8V-28.8V. Developed in cooperation with Dr. U. Kuhlmann, TU Berlin and Dipl Ing F. Ludwig, TU Illmenau. The dimensions refer to the housing, plus screw-on pockets. Functional description on request.

Note: Images and drawings are similar. Certain differences are caused by manual production or further development.