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Logic Probe

Logic Probe

Schematic Parts List QTY PART-REFS VALUE --- --------- ----- Resistors --------- 1 R1 2M2 3 R2,R3,R5 1K 1 R4 4M7 Capacitors ---------- 1 C1 100nf Integrated Circuits ------------------- 1 U1 4001 Diodes ------ 3 D1-D3 LED