LC Audio Technology Zapsolute Mk4.1 Schematic

VCC

GND

OUT

TRIG

THRESHOLD

3

1

5

7

6

2

8

4

RESET

VCC

VSS

Q13

CTC

RTC

HC4060

3

4

8

11

10

16

12

OK LED+

OK LED-

MR

Timer

D103

4148

BIAS testpoint -

IC101

IC102

T103

BC858

BC846

BIAS testpoint +

R230

80R6

R231

80R6

R232

80R6

R233

2R20

R234

40R2

...RE3

...RE6

BAV102

BAV102

2SC2922

2SA1216

2SC4278

2SD1763

2SC3722k

2SA1455k

Copyright 1999 - 2000 L C Audio Technology

R266

301k

R267

301k

Servo

C122 100n

C132

AUX -

Version 1.01 published July 20th 1999, update on

100n

R172
7k62

D121
12V

DC Servo

IC104
LF411

R171
1M

R170
100k

D122
12V

R102
10k0

D101

Cl.A LED +

Class A

Cl.A LED -

Cl.A/B LED+

PowerDown

Cl.A/B LED-

T107
BC846

Operation

OK

R208
3k01

T204
2SC3722k

R204
3k01

R206
3k01

T202
2SA1455k

T205
2SA1455k

C206
470/63V

T203
2SC3722k

R203

RGND

2R20

3k01

R205
3k01

T201
2SA1455k

R201

Direct In +

Input Gnd

Direct In -

301

RZ+
2k00

RZ­2k00

R202
301

4V7

R115
4k99

R101
1k

D102
4V7

Auto

Class A

PowerDown

R119

1k

T108
BF823

R103
3k01

D201
4V7

R207
100k

R210
100k

T106
BF822

R122
2k0

D203
4148

R118
4k7

C131
100n

R114
10k

T105
BC846

R116
4k7

Auto

R119
4k99

P2 10k

DC

R214
1k30

R123
10k0

S.A.

R224
40k2

R211

10k

R173
7k62

C234
1u
MKT

to

Auto PowerDown Timer

R113
10k0

LED101
APD

Runout

Signal

R112
100k

T104

ZAPsolute Mk4

C104
100n

D104
4V7

D107

4148

C108
470n

9

R110

Q5

C555

DIS
C

R161
10k0

RS

R105
1M

C103
1u

47k

R111
470k

http://www.lcaudio.dk

D109
4148

C107
100n

R104
10k0

C109
22n

R117
10k0

D106
4V7

R109
10k

Important Notice:

This document or any
of its contents may not '
be used for any kind of
commercial purpose
what so ever, without
the written permission
of the author.

RTH
NTC 150k

Short Circuit Protection

R144 22R1

C1

R242
1k

R243
1k

C2

R157 1k

R159 33k

R158 1k

R220
10k0

R221
16k0

R216
47k R217

C201
100n

R219
4k99

T9
BC517

R226
1k50

BIAS

P1
500

221R

DC

R250
30k0
GLASS

R228
2k0

R251
30k0
GLASS

T209

T210

R238
80R6

T7

R229
100

R240
80R6

T8
2SB1186

D206

D205

R239
80R6

T4

R240

2R20
T5
2SA1633

R241
40R2

T1

RE1
0R27
RE4
0R27

T2

D108
4148

+33 - 45 V

+ 33 - 45 V

22u / 400V
Polypropylene
M-CAP

NPN Basis

PNP Basis

22u / 400V
Polypropylene
M-CAP

-33 - 45 V

R108
182k

Protection

D111
BAV
99

R107
22k1

C105
100n

R160
3k01

AUX +

C112
100n

Power +

Power OUT

Power GND

Power -

R106
10k0

T122
BF822

C209
470/63V

T206
2SC3722k

R209
3k01

D202
4V7

R213
1k30

R216
47k

R218
221R

R145
22R1

-33 - 45 V

AUX-