Parts list, from Maplin (0702 554161)

Converter:

Part			Quantity	Maplin part no. (page)	Price each	Total	Notes

3k3 resistor,0.6W	4		M3k3 (769)		4		16	Buy A3k3 (one of), 10 3k3 resistors for 32p = 3.2p each.
BC212L transistor	1		QB60Q (784)		15		15
BC140 transistor	1		QB37S (785)		45		45
OA91 signal diode	1		QH72P (788)		28		28

Power supply:

LM2930A power reg.	1		AH87U (922)		179		179	Reverse polarity protected!
100nF cap.		1		RA49D (625)		25		25
220F cap.		1		FF13P (631)		19		19
SI7660CJ inverter	1		YY75S (915)		229		229
8 pin DIL socket	1		BL17T (945)		8		8
10F cap.		2		YY34M (630)		15		30

Misc:

Veroboard, 39x10lines	1		JP46A (749)		59		59	100x25mm
PP3 battery clip	1		HF28F (602)		19		19
SPST toggle switch	1		FH97F (962)		99		99	5.2mm hole needed
3 mm 5V LED		1		CJ64U (729)		38		38	No series resistor needed, optional !
3 mm LED clip		1		YY39N (733)		8		8	4.4mm hole required, optional !
9W D type metal hood	1		JB68Y (661)		89		89
9W D type socket	1		RK61R (660)		75		75
2.5 mm stereo plug	1		FJ85G (642)		72		72
Twin conductor cable	2m		XR21X (614)		39		78	2 cores, individual screens. 2.8x5.6mm
Case 105x61x28mm ext.	1		ZB17T (691)		279		279	PCB max. 66x50x15 + space for PP3
Grommets		1		JX65V (715)		45		45	10 pack, 6.4mm int. 9.5mm hole needed.

									Total	1455	Battery not included !