155Views2Replies

Author Options:

Do I need a diode? Answered

I am wiring 8x 5 mw lasers in parallel, powered by a 3.7v Li-Ion rechargeable battery. I was told that I would need a diode, specifically a 1n4001 diode to regulate polarity. I know what a diode does in theory (control the direction of electron flow), but I'm not 100% where in the circuit the diode needs to go. I'm assuming it goes between the positive battery lead and the output devices. Can someone clarify?

Discussions

Are these lasers internally regulated ?

I guess the diode may be to drop the supply to ~3V.

It doesn't matter where the diode goes - +ve or -ve lead, but if its in the positive lead, the end WITHOUT the band goes to the battery +ve.

Steve

Yes, they are internally regulated. And that makes perfect sense. Thank you!