| 摘要 |
<p>A switching arrangement for a pulse-modulated power supply to an infrared radiation source whose radiation can be measured by a receiver is to be improved in a manner such that the radiation source is able to deliver a rapid and easily processed measurement signal to the receiver as independently as possible of its radiation characteristic and of its thermal properties and unaffected by the ambient conditions. For this purpose, provision is made that the power supply can be regulated by a regulating unit (1,2) to an upper temperature set point T0 during the pulse time and to a lower temperature set point Tu during the interpulse period, the change between the two set points being capable of being triggered by a pulse generator (T1) connected to the set point input (E2) of the regulating unit (1,2). …<IMAGE>… </p> |
