Answer / Babli Singh

Several components can operate on negative DC voltages. Some examples include:
1. Thyristors (such as silicon-controlled rectifiers and triacs) can be biased to conduct current in either direction.
2. Transistor switches like MOSFETs or bipolar junction transistors (BJTs) can also be used with negative DC voltages.
3. Some types of photodiodes and solar cells can produce negative voltage under specific conditions.

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