Bill Of Materials ================= Design: C:\Users\DS\Desktop\Design130\OptoGate\OptoGates.DSN Doc. no.: Revision: Author: Created: 02/19/14 Modified: 11/14/14 QTY PART-REFS VALUE CODE --- --------- ----- ---- Resistors --------- 2 R2,R3 100K 1 R4 330R 1 R5 2.2K 1 R6 470K 1 R7 390K 1 R8 1K **This value may need some tweaking** Capacitors ---------- 1 C1 1uF 1 C2 1nF Integrated Circuits ------------------- 1 U3 TL072 Transistors ----------- 1 Q2 2N3904 Diodes ------ 1 D1 DIODE 1 D2 LED-YELLOW **Vactrol LED** Miscellaneous ------------- 1 LDR2 LDR **Vactrol LDR** 1 RV2 100K 1 SW1 SW-SPDT