Passives: 1x 22 Ohm 1x 1k 1x 2k2 1x 2k7 3x 10k 1x 47k 1x 220k Caps: 1x 1 nf 1x 22 nf 3x 100 nf 6x min 820 uF low imp., HF-rated elektrolyte 25V Semiconductors: 2x BC547 (NPN) 1x MBR1645 (16A Schottky) (or: MBR2545) 1x IRFZ44N (49A N-channel TMOS transistor) 1x UC3843 (Switch mode controller) Coils: 2x min 12 uH ca. 8A 1x Clamshell core A couple of meters of 0.7mm insulated cobber wire