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PCE
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DIFF Subgroup
H05B 45/20

Controlling the colour of the light

Introduced: January 2020

Full Title

Circuit arrangements for operating light-emitting diodes [LED] > Controlling the colour of the light

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 2020.

Child Classifications

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  • H05B 45/22 using optical feedback since 2020 IPC+CPC Available in IPC and CPC
  • H05B 45/24 using electrical feedback from LEDs or from LED modules since 2020 IPC+CPC Available in IPC and CPC
  • H05B 45/28 using temperature feedback since 2020 IPC+CPC Available in IPC and CPC