Most of the components are available from Farnell in the UK, apart from T1
and T2 which are becoming increasingly difficult to find, and are sometimes fakes.
The mosfets are available from Farnell, but are more expensive than some sources.
I got mine from Nikko, their mosfets appear to be full spec genuine devices.
I am looking for alternative input stage transistors to recommend.
T1 2SC2547E - NPN low noise TO-92a
T2 2SA1085E - PNP low noise TO-92a
T3 2SC2911 - NPN 160V 140mA TO-126
T4 2SA1209 - PNP 160V 140mA TO-126
T5 2SA1209 - PNP 160V 140mA TO-126
T6 2SK1058 - N-channel lateral mosfet 160V 7A TO-3P
T7 2SJ162 - P-channel lateral mosfet 160V 7A TO-3P
D1, D2, D3 - 3mm Red LED HLMP-1301
D4, D5, D6, D7 - 12V 500mW Zener diodes
L1 0.4uH. 13 turns 18swg enamelled copper wire, inside diameter 1cm length 1.7cm.
Wire diameter 1.2mm, total length of wire about 50cm.
F1 2A-T fuse, 20mm x 5mm.
Vr1 220R Preset potentiometer
Vr2 4k7 Preset potentiometer
All resistors are metal film 1% 500mW or 600mW apart from those listed as 2W 5%,
which are also metal film.
The colour codes are listed later on this page.
R14 2R2 2W 5%
R15 1R 2W 5%
C1 2u2 polyester 7.5mm lead pitch e.g. Epcos B32560J1225K
C2 470p polypropylene 5mm pitch (I used WIMA 100V)
C3 330p polypropylene 5mm pitch
C4 1n polypropylene 5mm pitch
C5 10p COG/NPO 100V or 200V ceramic (The ones I used are marked 100J)
C6 220u 6.3V electrolytic
C7 220p polypropylene 5mm pitch
C8 100n polyester 10mm pitch
C9 220u 63V (for 60V supply) 5mm pitch
C10 4700u 63V, e.g. Panasonic TSUP, dia. 25mm, lead pitch 10mm, mounting holes 2mm dia.
C11 10u 16V non-polar electrolytic
C12 100n polyester 10mm pitch
Printed circuit board
Insulating mica washer for TO-3P case mosfets
Terminal blocks (optional), nuts and bolts, wire,
Heatsink, heat conducting paste, case, 60V power supply, on/off switch etc.
RESISTOR COLOUR CODES
The 2W 5% types have 4 bands:
1R brown black gold gold
2R2 red red gold gold
The 500mW 1% types have 5 bands:
1R5 brown green black silver brown
100R brown black black black brown
120R brown red black black brown
220R red red black black brown
300R orange black black black brown
470R yellow violet black black brown
1k brown black black brown brown
5k6 green blue black brown brown
10k brown black black red brown
47k yellow violet black red brown
56k green blue black red brown
200k red black black orange brown