1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

D

D

C

C

B

B

A

A

Title

Number

Revision

Size

A2

Date:

14/09/2003

Sheet of

File:

D:\Altium\..\Coin Hawk.SchDoc

Drawn By:

2.2 pF

C15

270K

R42

5.1K

R43

270K

R54

5.1K

R52

VCC

VDD

22nF

C21

220nF

C22

100K

R65

VCC

5

6

1

2

3

8

7

4

NE5534P

U4

Green

White

CNTL

13

IO

1

OI

2

MM74HC4016J

U5A

CNTL

5

OI

3

IO

4

MM74HC4016J

U5B

CNTL

12

IO

11

OI

10

MM74HC4016J

U5D

CNTL

6

IO

8

OI

9

MM74HC4016J

U5C

20K

R40

20K

R56

100K

R57

220nF

C17

220nF

C27

220nF

C23

All Metal Channel

Discriminate Channel

2

3

1

8

4

A

LF442ACN

U10A

5

6

7

B

8

4

LF442ACN

U10B

VCC

VDD

20M

R13

220K

R21

10K

R4

100nF

C6

470nF

C1

2.7M

R12

1K

R26

470K

R5

Centre Bia sed, Left Lock, Right Momenta ry

S3

SW-SPDT

S4b

All Metal

Discriminate

SW-SPDT

S4a

10

9

8

C

4

1

1

TL074J

U7C

12

13

14

D

4

1

1

TL074J

U7D

VDD

VCC

1M

R51

1M

R49

22nF

C20

22nF

C18

4.7uF

C19

100k

R48

2N3904

Q4

VDD

VCC

470nF

C24

47K

R55

100K

R41

2

3

1

4

1

1

A

TL074J

U7A

5

6

7

B

4

1

1

TL074J

U7B

VDD

VCC

1M

R33

1M

R31

22nF

C11

22nF

C9

4.7uF

C10

100k

R30

2N3904

Q3

VDD

VCC

470nF

C12

47K

R38

CNTL

13

IO

1

OI

2

MM74HC4016J

U6A

CNTL

5

OI

3

IO

4

MM74HC4016J

U6B

220nF

C5

Pinpoint Channel

100K

R18

20k

R17

20K

R25

150pF

C7

8

3

2

4

1

LM393N

U8A

VCC

VDD

VCC

VDD

5

6

7

8

4

LM393N

U8B

VCC

220K

R47

1K

R46

100K

R45

100K

R64

VDD

Discrim Sens.

CNTL

6

IO

8

OI

9

MM74HC4016J

U6C

CNTL

12

IO

11

OI

10

MM74HC4016J

U6D

NO

NC

10K

R1

4.7K

R3

VCC

SW-PB

S2

2.2K

R2

PINPOINT

ON/OFF

S1

12AA Cells

B1

220uF

35V

C35

100nF

C28

IN

1

2

OUT

3

GND

LM7812

U2

IN

1

2

OUT

3

GND

LM79M05CT

U11

220uF

16V

C33

220uF

16V

C34

100nF

C29

100nF

C26

12V

OSC

7

LV

6

BOOST

1

CAP+

2

CAP-

4

GND

3

VDD

8

VOUT

5

LTC1044CP

U3

220pF

C16

VCC

220uF

16V

C32

220uF

16V

C31

VDD

VCC

100K

R62

2N2222A

Q2

2N2907A

Q1

L2

15K

R10

47K

R16

1.5K

R9

12V

220nF

C2

33nF

C3

L1

Receive

Transmit

Yellow

Red

8.2K

R19

5.1K

R22

100pF

C8

470K

GEB

1K

R32

8

3

2

4

1

LM393N

U1A

VDD

VCC

5

6

7

8

4

LM393N

U1B

20K

R28

VCC

47K

R34

1K

R35

220pF

C13

100K

DISC

100K

R37

3.3K

R39

20K

R36

GEB Drive

Discriminate Drive

33K

R14

1K

R50

33nF

C25

22nF

C14

27K

R7

VCC

80K

R24

VDD

VCC

100nF

C4

2N2222

Q6

47K

R15

8

1

4

3

2

LM358N

U9A

7

5

6

8

4

LM358N

U9B

10K

R58

VDD

VDD

VCC

100K

R61

VDD

VCC

100K

R6

VCC

10K

R59

2.2K

R29

GND

Threshold

Sensitivity

2N2222

Q7

2N2907

Q5

5.1K

R11

10R

R8

100R

R20

100R

R23

150R

R27

Speaker

LS1

Headphones

HP1

220uF

16V

C30

VCC

Resistive
X1

Reactive
X2

uP Trigger Drive

X3

VDD

VCC

22K

R44

1K

R53

Discriminate

V_Batt_SW

Audio_Out

Audio_Osc.

100nF

C36

100nF

C37

U5 & U6 Decoupling

NOTE: ALL 4016's have VCC to +5V and VDD to -5V.

Trimmer 10 turn