Universal Measurement Amplifier / Attenuator
For laptop or PC
Materials
Gerber file
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Extra info / Update
Component list
R1–R4 = 1.8MOhm
R5,R9 = 1kOhm
R6,R7,R8,R10 = 1MOhm
R11,R13 = 10kOhm
R12,R14 = 4.7kOhm
R15 = 3.9kOhm
P1,P2 = 100kOhm potentiometer, logarithmic law
P3,P4 = 100kOhm potentiometer, linear law
Capacitors
C1,C2 = 100nF MKT, pitch 5mm
C3,C4 = 10µF 16V, 6mm diam., pitch 2.5mm
Semiconductors
D1–D9 = BAT48 (DO-35 case)
IC1 = TS922IN (dual opamp, DIP-8 case)
LED1,LED2 = LED, green, 5mm
Miscellaneous
K1 = 3.5mm stereo socket (e.g. Lumberg 1503-09)
K2,K3 = BNC connector, right angled pins, PCB mount (e.g. TE connectivity 1-1337543-0)
BT1 = 9V battery clip
PCB # 120272-1
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