ML4830

12

RESISTORS: (Continued)

QTY.

REF.

DESCRIPTION

MFR.

PART NUMBER

4

R14

100K, 1/4W, 5%, carbon film resistor

Yageo

100K-Q

1

R15

681K, 1/4W, 5%, carbon film resistor

Yageo

681K-Q

1

R16, 19

10K, 1/4W, 1%, metal film resistor

Dale

SMA4-10K-1

1

R18

4.7K, 1/4W, 5%, carbon film resistor

Tageo

681K-Q

1

R21

33ý, 1/4W, 5%, carbon film resistor

Yageo

33-Q

1

R23

25K, pot (for dimming adjustment)

Bourns

3386P-253-ND

DIODES:

4

D1, 2, 3, 4

1A, 600V, 1N4007 diode

Motorola

1N4007TR

(or 1N5061 as a substitute)

2

D5, 6

1A, 50V (or more), 1N4001 diodes

Motorola

1N4001TR

1

D7

3A, 400V, BYV26C or BYT03 400 fast recovery

GI

BYV26C

or MUR440 Motorola ultra Fast diode

6

D8, 9, 10, 11

0.1A, 75V, 1N4148 signal diode

Motorola

1N4148TR

12, 13

IC’s:

1

IC1

ML4830, Electronic Ballast Controller IC

Micro

ML4830CP

Linear

TRANSISTORS:

3

Q1, 2, 3

3.3A, 400V, IRF720 power MOSFET

IR

IR720

MAGNETICS:

1

T1

T1 Boost Inductor, E24/25, 1mH, Custom Coils P/N 5039 or Coiltronics P/N CTX05-12538-1

E24/25 core set, TDK PC40 material

8-pin vertical bobbin (Cosmo #4564-3-419),

Wind as follows:

195 turns 25AWG magnet wire, start pin #1, end pin #4

1 layer mylar tape

14 turns 26AWG magnet wire, start pin #3, end pin #2

NOTE: Gap for 1mH ±5%

1

T2

Toroid Magnetics YW-41305-TC

Wind as follows:

Primary = 25 turns 30AWG magnet wire, start pin #1, end pin #4

Secondary = 50 turns 30AWG magnet wire, start pin #5, end pin #8