Ramsey Electronics SR2 ユーザーズマニュアル

   SR2 –  10

 

PARTS LIST  

 
CAPACITORS 
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1    10 pF ceramic disc capacitor [marked 10] (C30) 

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1    47 pF ceramic disc capacitor [marked 47] (C15*) 

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4    100 pF disc capacitor [marked 100, 101, or 100K] (C5,15*,16*,17) 

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1    330pF disc capacitor [marked 330 or 331] (C2) 

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6    .001µF disc capacitors [marked .001, 102, or 1nF]  

              (C1,3,16*,20,21,25) 
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1    .0039 uF disc capacitor [marked 392 or 392K] (C31) 

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4    .01µF disc capacitors [marked .01, 103, or 10nF] (C4,6,8,28) 

ˆ

6    .1µF ceramic disc capacitor [marked .1 or 104] (C7,10,12,18,19,29) 

ˆ

2    1µF electrolytic capacitors (C9,24) 

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3    10µF electrolytic capacitors (C11,22,23) 

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2    220µF electrolytic capacitors (C13,14) 

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1    1000 µF electrolytic capacitor (C26) 

 
INDUCTORS 
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2    1 µH inductors [looks like a resistor with brown-black-gold bands] 

             (L1,L2) 
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1    12 µH inductor [looks like a resistor with brown-red-black bands]    
        (L3) 

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2    Shielded can inductors [marked 42IF-103] (T1,2) 

ˆ

1    Shielded can inductors [marked 42IF-123] (T3) 

 
RESISTORS 
ˆ

1    2 ohm [red-black-gold] (R15) 

ˆ

1    100 ohm [brown-black-brown] (R26) 

ˆ

3    270 ohm [red-violet-brown] (R16,22,25) 

ˆ

8    1K ohm [brown-black-red] (R3,7,9,10,13,17,18,24) 

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5    10K ohm [brown-black-orange] (R6,8,11,19,23) 

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2    22K ohm [red-red-orange] (R2,4) 

ˆ

3    100K ohm [brown-black-yellow] (R1,5,20) 

ˆ

1    1M ohm [brown-black-green] (R12) 

 
SEMICONDUCTORS 
ˆ

1    Red LED (D2) 

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1    1N270 diode, glass bead style (D1) 

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1    Varactor diode, transistor style body with two leads (MVAM108) (D3) 

ˆ

3    NPN transistors, 2N3904 or similar (Q1,2,3) 

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1    LM358 8-pin DIP IC (U1) 

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1    LM386 8-pin DIP IC (U2)