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High impedance probe using opamp

6 years ago 3208
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Description

The beginnings of an idea for a DIY high input impedance probe using an opamp. A simple high impedance probe suitable for use with an oscilloscope or DVM.

Documents

High impedance probe using opamp

BOM

ID Name Designator Footprint Quantity
1 49.9 R1,RSCOPEIP R3 2
2 5 V1,V2 BATTERY 2
3 BAS40 D3,D4 SOT23 2
4 100n C1,C2 1206 2
5 1k R2,R3 R3 2
6 1G RDNF R3 1
7 THS4601 U1 DIP08 1
8 SIN(0 1 1Meg) AC 1 0 V3 2P-5.0 1
9 TLine COAX_50R_10NS DIP 1

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