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For the term "220 farad 2 3volt".

Joule Thief: JTEnhanced Current Input, Voltage Output Waveforms

It doesn’t seem right to call it a basic JT since the loopstick and capacitor make so much difference. So I’m calling the cap/loopstick version “JTEnhanced”. It is the basic circuit, using the 1K…

Solar powered emergency light

LED Driver: SEC-18.1. 67.76.235.52 Charge Controller: SPC3 cirkit charge controller Auto-on load add-on circuit Adjustable cutoff, load-on, load off No relays www.cirkits.com Light: Acriche 110v emitter. (Mouser) Energy Storage: 16.2v 500 Farad ultracapacitor bank…