Ramsey Electronics SR2, User Manual

Page: 10 / 28

SR2 – 10
PARTS LIST
CAPACITORS
ˆ 1 10 pF ceramic disc capacitor [marked 10] (C30)
ˆ 1 47 pF ceramic disc capacitor [marked 47] (C15*)
ˆ 4 100 pF disc capacitor [marked 100, 101, or 100K] (C5,15*,16*,17)
ˆ 1 330pF disc capacitor [marked 330 or 331] (C2)
ˆ 6 .001µF disc capacitors [marked .001, 102, or 1nF]
(C1,3,16*,20,21,25)
ˆ 1 .0039 uF disc capacitor [marked 392 or 392K] (C31)
ˆ 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)
ˆ 3 10µF electrolytic capacitors (C11,22,23)
ˆ 2 220µF electrolytic capacitors (C13,14)
ˆ 1 1000 µF electrolytic capacitor (C26)
INDUCTORS
ˆ
2 1 µH inductors [looks like a resistor with brown-black-gold bands]
(L1,L2)
ˆ 1 12 µH inductor [looks like a resistor with brown-red-black bands]
(L3)
ˆ 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)
ˆ 5 10K ohm [brown-black-orange] (R6,8,11,19,23)
ˆ 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)
ˆ 1 1N270 diode, glass bead style (D1)
ˆ 1 Varactor diode, transistor style body with two leads (MVAM108) (D3)
ˆ
3 NPN transistors, 2N3904 or similar (Q1,2,3)
ˆ 1 LM358 8-pin DIP IC (U1)
ˆ 1 LM386 8-pin DIP IC (U2)