Read my 悄悄話 please, use a 7812 voltage regulator on your LEDs.

來源: xia23 於 2019-05-20 04:19:10 [] [博客] [舊帖] [給我悄悄話] 本文已被閱讀： 次 (942 bytes)
回答: from ebay 由 別在窗前等我 於 2019-05-17 08:23:43

Read my 悄悄話 please, use a 7812 voltage regulator on your LEDs. 

https://www.ebay.com/itm/10PC-L7812CV-L7812-7812-LM7812-Voltage-Regulator-12V-1-5A-TO-220-LDO-DC-output/192696689276?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Consider the alternator's output is 13.8-14.8 V. Higher voltage than 12.6 V of your car battery might eventually burn your LEDs out.

I have tried with 4 LEDs in series with 12.6 V to 14.8 V. They are ok with 12.6 V but are burnt out with 14.8 V.

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