This project contains the passive schematic and PCB design for the circuit as simulated in `Bob Pease's High Impedance Active Scope Probe simulations`: https://easyeda.com/guest/Bob_Pease_s_High_Impedance_Active_Scope_Probe_simulations-gsmEyQ8qj This project contains the passive schematic and PCB design for a simple DIY low frequency high input impedance active scope probe adapter. It could also be used with a DVM. The original design can be found in: "Troubleshooting Analog Circuits" by Bob Pease; Part 2 "The right equipment is essential for effective troubleshooting", Section 3, Figure 3. http://www.introni.it/pdf/Bob%20Pease%20Lab%20Notes%20Part%208.pdf