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Frequency Central State 700 MK2, Создание документации

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Frequency central 

Build documentation for: 

State 700 MK2 

Based on the Roland System 700 state variable voltage controlled filter 

 

          Main PCB                           

Pots ‘n’ sockets PCB

 

                        

 

 

 
Key to PCB screen print: 
n:

 This signifies NPN BC547 transistors. Note the correct pinout as shown by the half circles. 

p:

 This signifies PNP BC557 transistors. Note the correct pinout as shown by the half circles. 

 
The PCB shows the correct orientation for BC547/BC557. Other transistor types can be used (eg 
2N3904/2N3906), but please observe the correct pinout.  
 
Please observe the correct polarity of the electrolytic capacitors. 
 
 
 
 
 
 
 
 
 

Содержание State 700 MK2

Страница 1: ...signifies NPN BC547 transistors Note the correct pinout as shown by the half circles p This signifies PNP BC557 transistors Note the correct pinout as shown by the half circles The PCB shows the corre...

Страница 2: ...uF x 1 22uF electrolytic x 2 47uF electrolytic x 2 TL071 x 1 TL072 x 2 LM13700 x 1 BC547 x 1 BC557 x 1 1N4148 x 2 8 pin socket x 3 16 pin socket x 1 A100K x 3 or these B100K x 3 or these A100K x 1 B10...

Страница 3: ...F capacitors 4 Solder both transistors 5 Solder all electrolytic capacitors and 3 x 1uF capacitors 6 Solder the power header if you re using box type observe correct polarity 7 Cut male headers to siz...

Страница 4: ...bs at the rear of the PCB then place the panel over them This will assure that they are correctly positioned Flip the whole lot over and solder the pots into place 4 Cut female headers to size and sol...

Страница 5: ...oct source into CV input 1 with the attenuator fully clockwise Play octaves and adjust the V Oct trimmer until they are spot on 2 Offset trimmer you want to tweak this so that the filter is fully ope...

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