ELECRAFT K2/100 - Schematic Diagrams

71
Schematic Diagrams
W. Burdick
E. Swartz
Elecraft
Rev. Sht.DateBy
30pF
1N5711
1N5711
3.3K
C1
C95
C87
C88
100
.001
.001
200
100K
R28
D16
D17
R29
R27
R26
T4
4
2
3
1
3
2
1+
-
U5A
5
6
7
+
-
8
4
U5B
2SC2879
R35
R34
Q2
Q1
10
10
K1
K2
5
4
2
3
1
T1
4
5
2
3
1
T2
C83
C81
C80
C59
R20
R19
R39
D12
D11
RP1
2
1
RP1
4
3
D14
D13
C79
R25
C86
(SHEET 2)
RFC5
RFC4
RFC3
L16
C76
Q6
R14
R11
R21
R23
R22
300
L18
C82
LPF OUTLPF IN
.0047
470
12PA
.01
15µH
RFC1
C75
R13
100
0.1
15µH
12PA
.0047
250V
1N4007 1N4007
C71
.0018
200V
C72
.01
5R
100µH
ZVN4424
510K
Q7
R12
C31
.22
63V
C73
.01
ZVN4424
(not used)
5T
90-150V
15µH
15µH
1N4007
1N5404
(not used)
10
0 ohms
0 uH
1W
3.9K
3.9K
R24
C70
.001
8.45K
1%
8.45K
1%
C69
.001
VR FDET
C68
C67
.0047
100V
C66
180
C64
.0047
250V
C62 .047
C61 .047
C63 .047
C60 100µF
+
R9 10
2W
2W
22 3W
0.1
C58
R38
22 3W
0.1
1000
s.m.
4700
4700
1.6
2W
1.6
2W
Z = 1:16
Z = 9:1
C53
.047
C52
.047
C54 .047
C51
470µF
+
C56
.047
C55
.047
C57
.047
Z1
FB110-43
C49
.047
C48
.047
C85
.047
1 of 2
LMC6482
3.09k, 1%
I SENSE
2N3904
U7A
100
R32
R30
1%
Q5
2
3
1
-
+
8
4
2
1
+
-
R7 .005 ohms
5V
C89
.01
LM358
5
6
7
+
-
U7B
LMC6482
R6
R5
Q3
5B
Q4
MJE182
MJE182
15K
1K
D10
1N5404
0.6-0.9 V
D9
SB530
(Ext. Fuse)
12PA
("AUX 12V")
12CTRL
.01
2
1
C10
0.1
R2
2.7 ohms
T SENSE
- BUILDER MUST COLOR 12V CONNECTORS DIFFERENTLY FROM RF CONNECTORS
2W
2W
(jumper)
12K2
GND
2
1
RF IN
GND
2
1
+
-
("AUX RF")
AF
GND
C11
0.1
R3
2.7 ohms
1W
3W
25V
Q10 Q11
2N7000
SCALE
1
3
2
3W
VREFL
VFWD
FT50-43
FWD REFL
C33
0.1
C30
0.1
C34
0.1
(0-5 V = approx. 0-32 A)
EN
3
2
6
+
-
7
4
8
U6
R15
3.3K
R16
3.3K
C65
.01
VRFEN
EL5146C
(2 beads)
GND
SPKR
C77
.015
200V
RFC11
100µH
*
T50-1
L15
(not used)
T4-6
T4-5
= on bottom of PC board
TP2
Not on the PC board.
TP4
(jumper)
T50-1
R40 22K
R33
1K
9/21/10