A very efficient emergency light

in #energy • 7 years ago

Schematics and description of a very efficient "Joule thief" circuit. It can light up an LED 10 Watt 220 Volt lamp with a 1.2 Volt rechargeable battery. It is capable of staying lit for about 20 minutes. At the beginning the it is very bright, then dims out little by little.

#gain
7 years ago in #energy by
$0.00
    1 vote
    Reply 0

    Coin Marketplace

    STEEM 0.17
    TRX 0.16
    JST 0.029
    BTC 76073.33
    ETH 2917.65
    USDT 1.00
    SBD 2.64