Differential Oscilloscope Current Probe 2.0
Measure Currents Using Your Oscilloscope
Gerber file
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Component list
Component list
Resistors:
(all 1%, 100 mW, SMD 0603)
R1,R2 = 1 k
R3,R4 = 10 M
R5 = 10 k
R6 = 50 Ω
R7,R8 = 22 k
Capacitors:
C1,C2 = 33 p / 50 V, 1%, C0G/NP0, SMD 0603
C3,C5,C8,C10 = 100 n / 50 V, 10%, X7R, SMD 0603
C4,C6,C7,C9 = 10 µ / 25 V, 20%, X5R, SMD 0603
C11,C12 = 10 µ / 35 V, 10%, X5R, SMD 0805
C13,C14 = 100 n / 100 V, 10%, X7R, SMD 0805
Inductor:
L1 = 100 µH at 100 kHz, common-mode choke, 200 mA, SMD, e.g. SRF4532-101Y, Bourns
Semiconductors:
IC1 = AD8421ARMZ, MSOP8
IC2 = L78L15ACUTR, SOT89
IC3 = L79L15ACUTR, SOT89
LED1,LED2 = LED, red, SMD 0603
D1–D4 = MBR0540T3G, SOD123
Miscellaneous:
K1 = 3-way SIL socket, vertical mount, 0.1 inch pitch
3-way SIL socket as plug for test leads*
Type RG316 coaxial cable, 50 Ω, 2.9 mm diameter, 1 m, e.g. Conrad 606450*
BNC crimp plug for RG316, 50 Ω, e.g. Conrad 1490723*
USB1KL enclosure, 56x20x12 mm, e.g. Conrad 531276*
Alternative enclosure: TC-USB1 KL203, 56x20x12 mm
Printed circuit board 180665-1 v1.0*
* see text
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