VariLab 402 (2/3)

Continue reading this Elektor article?
- Unlimited access to online Member Only articles
- 3 new editions Elektor Magazine (digital)
- More than 5000 Gerber files
- 20% member discount on e-books (at elektor.com)
- 10% member discount on Products (at elektor.com)
Stops Automatically.
What is Members Only
Elektor is committed to providing high-quality content on electronics, catering to tens of thousands of paying members. As part of this commitment, Elektor has launched Premium, an initiative that offers exclusive online articles to members sometimes even before they appear in the magazine.
Every day, members can access in-depth articles that showcase the best of Elektor's premium content.
This initiative aims to reward members with early access. Once logged in, members can easily enjoy this exclusive content and engage in discussions about featured projects. While Premium adds to the existing resources available, Elektor will continue to provide a wealth of free information.
Join the Elektor community today to take advantage of Premium and other benefits!
Component list
Resistors
Default 0.125W, SMD 0805)
R1–R4,R8,R14,R16,R22–R25 = 1k? 1%
R5 = 2.87k? 1%, 0.1W
R6 = 1.80k? 1%
R7 = 10M? 1%
R9 = 10k? 5%
R10 = 820? 1%
R11 = 8.87k? 1%
R12 = 1.21k? 1%
R13 = 1.30k? 1%
R15 = 15? 1%, 0.25W
R17 = 10? 5%
R18,R20 = 2.2k? 5%
R19 = 47? 5%
R21 = not fitted
R26 = 33k? 5%
R27 = 56k? 5%
P1 = 500? 10%, 0.5W, 25-turn preset, top adjustment (Bourns 3296Y-1-501LF)
P2 = 10k? 20%, 0.15W, preset, top adjustment
Capacitors
C1,C2 = 22pF 50V, 5%, SMD 0805 C0G/NP0
C3..C9,C13 = 100nF 25V, 10%, SMD 0805 X7R
C10 = 10µF 63V, 20%, diam. 6.3mm, 0.1” pitch
C11 = 100µF 25V, 20%, diam. 6.3mm, 0.1” pitch
C12 = 4.7µF 6.3V, 10%, SMD 0805 tantalum (case R, AVX TAJR475K006RNJ)
Inductors
L1,L2 = 330? @ 100MHz, 0.08? 1.7A, SMD 0603
Semiconductors
D1 = LED, red, 3mm, wired
D2,D3,D4,D5 = BAS70-04 (SMD SOT-23)
D6 = PRTR5V0U2X (SMD SOT-143B)
D7,D8 = TS4148 RY (SMD 0805)
T1,T2 = BC817-25 (SMD SOT-23)
IC1 = ATxmega128A4U-AU (SMD TQFP-44), programmed, Elektor Store #120437-41)
IC2 = MCP6004 (SMD SOIC14)
IC3 = KF33BDT-TR (DPAK-3)
IC4 = 4N25 (DIP-6)
IC5 = LM35 (TO-92)
IC6 = LM336Z-2V5 (TO-92)
Miscellaneous
K1 = USB connector, type B, PCB mount, wired, vertical model (Lumberg 2411 01)
K2 = 6-pin (2x3) pinheader, 0.1” pitch
K3 = 14-pin (2x7) pinheader, 0.1” pitch
K4 = 2-way screw terminal block, 0.2” pitch
K5,K6,JP4 = 3-pin pinheader, 0.1” pitch
K7 = 4-pin pinheader, 0.1” pitch
JP1,JP2,JP3 = 2-pin pinheader, 0.1” pitch
jumpers for JP1,JP2,JP3,JP4
S1,S2 = 18PPR rotary encoder with integrated pushbutton (e.g. Alps EC11E183440C)
S3 = pushbutton, PCB mount (e.g. Multimec RA3FTL6)
S3 = cap for pushbutton, h=19mm (e.g. Multimec 1S09-19.0)
BZ1 = piezo buzzer, 1.5–16 VDC, max. 8 mA, diam. 14mm, 7.62mm pitch
X1 = 16MHz quartz crystal, CL 18pF, dim. 5 x 3.2mm (Abracon ABM3-16.000MHZ-B2-T)
LCD1 = 4x20 characters, with backlight, Elektor Store #120061-73
PCB # 120437-2
Discussion (0 comments)