R1  	330R
R2  	2.2K
R3	1K
R4	2.2K
D1  	1N4001
D2  	1N4001
D3  	1N4001
C1	4.7uF
C2	2200uF
C3	47uF
TR1 	BC547
SW1 	(case front panel switch - to enable manual operation)