AUXILIARY ARRANGEMENT FOR A LED TUBE LAMP

An approach for providing an auxiliary arrangement for a LED tube lamp that adapts a DC voltage for a monitoring circuit of the LED tube lamp. In particular, a modulation circuit of the auxiliary arrangement modulates a DC supply voltage, for the LED tube lamp, to simulate one or more characteristics of an alternating mains supply voltage for which the LED tube lamp is adapted. Preferably the at least one electrical characteristic comprises one or more electrical characteristics configured to designed to be detected by a monitoring circuit of the LED tube lamp operating in a safety detection mode, to allow the monitoring circuit to start a safety detection using the DC supply voltage