schema ce1 turretboard .pdf

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D20

R51/4k7
C32/22n

C10/47u

C45/220u

D13
D14
R85/10k

D15

D22

R50/100k

R45/10k

D23

C27/470p

C29/1n

C28/1n

C26/4n7

C33/22n

R27/6k8

R58/8k2
R33/2k2

R62/10k

R32/33k

D4

R29/47k

D3

D5

C22/1u

Q14

D101

Peak Level

150k

180k

220k

CA1458C

OK

OK

OK

OK

uPC1458

OK

OK

NO

NO

R78/8k2

1
5

8
-

7

IC4-b
+

-14v

D7

D8

C34/10u

R64/3k9
C35/4u7

R65/1k5

R76/18k

R81**

-14v

R83/220k

Chorus Vibrato

R17/470R

Q17

Vibrato Rate/100kC

Redrawed from factory schematic by:

WWW.TURRETBOARD.ORG

R63/4k7

R77/2k2

4

R57/100k

Chorus

R79/4k7
Depth/50kB

C43/82n
IC4-a
+

R81**

120k

+14v
6

-

D9

R75/33k

R68/330k

3

-14v

+14v

R80*

VR12/10kB chorus int

-13v

-14v

D102

IC4

-14v

R54/4k7

VR1/5k
R28/47k

R34/33R

R35/1k

R82/100k

C4/47u

C44/220u

R84/10k

R63/1k8
C48/220u

C46/220u

Re IC4 vs R80 and R81
When using uPC1458 for IC4, R80 must be
120k and R81, 150k
When using CA1458C for IC4, R80 may be
either 120k or 100k and R81, either 150k or 220k

R80*

9

-23v

R88/1k8 C49/220u

7

C47/220u

6

+13v

Q16

D1

D1

8

D1
F2 0.5A
AC18V

D1

AC18V

Q15

Normal

R86/15k

Q6

2

R10/470R

R61/10k

C20/47p

-14v

+14v

Effect

R60/1M

-14v

C19/250p

Q5
R31/33k

R30/2k2

R38/470R
D13

C37/15p

R66/22k

-14v

C42/47n

4

Q12

R89/10k

R67/4k7

C40/100n D11

6

1

+

Q13

Q4

C21/47p

C41/33n

5
IC3

R92/470R OUTPUT

R90/2k2

C17/470u

R36/100k

D6
2

7
-

STEREO

-14v

D12

R70/100k

C38/100n

R74/100k

3

D2

C18/250p

+14v

C36/47p

R71/10k

* All diodes are 1S1555, unless otherwise noted
* All resistors are 1/4 watt, 2,5% rating
* All electrolytic capacitors are above 20V rating, unless otherwise noted
* All diodes are 1S1555, unless otherwise noted
* Capacitors marked NP are non-polar type
* Capacitors between 470pF and 0.1uF are mylar film type
* Capacitors below 250pF are ceramic type
* LED's are SLP-24B

R25/100k

R26/6k8

Q8

R73/470k

C39/1uF

R72/3k3

R46/2k2
C30/470n

D1

Q3

R56/10k

Q10

-14v
-14v

Q9

C23/33n

R4/100k

12

R40/10k

C16/10uF

C15/10uF

R39/47k

R7/10k

2

R41/22k R42/6k8 R43/15k R44/15k

R24/100k

11
R23/1k

R37/47k

R5/680R

R6/330k

4

C3/1uF
Q1

R3/56k

C1/1n

R1/4k7

13

Q7

R59/1k

C11/1n

+13v

* IC's and Transistors
IC1, IC2: TA7135P
IC4: uPC1458
Q1, Q2, Q7, Q10, Q16: 2SC900
Q3, Q4: 2SA493
Q5, Q6: 2SC538F
Q8, Q9, Q14: 2SA733
Q15: 2SD234
Q17: 2SB434

F1 0.5A

MONO

R55/1M

IC-2

R22/10k

-14v

R2/1k5 C2/1uF

3
R21/100k

C107/15p

C14/100n

R19/8k2

4

-13v

D16-D19
1N4003 x 4

OUTPUT

Q11

7
14

R18/10k

1

+

Boss
Ce-1
Chorus Ensemble

C8/6n8

5 6

IC1

1

Q2

C12/4n7

-

2

R13/22k R14/10k R16/10k

R15/10k

Level 50kA

R8/10k

R9/100k

7

3

+23v

R91/470R

+13v

C5/47p

INPUT

C13/10uF

R20/10k

R53/3k3

C7/470n NP

R11/470k

R48/1k5

+14v
R12/10k

R52/3k3

D21

C31/470n NP

R47/12k

Vibrato


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