How to light a LED
Workshop on Joule-thief circuit
1. The Circuit
http://www.instructables.com/id/Joule-Thief-no-IC-and-no-Transformer/
2. Identify parts
● R1 resistor 1K (BRK/G)
● R2 resistor 33K (OOO/G)
● C1 capacitor 1 nF
● Q1 BC557 PNP transistor
● Q2 BC457 NPN transistor
● L1 330 microH inductor (OOR/G)
● D1 LED diode
● BAT 1,5 V AAA battery
3. Begin assembly
How it works?!