Labels Milestones
BackA-557 | | | | | Tayda | A-553 | | | | R8, R10, R12 | 3 | 1k | Resistor | | R14, R15, R18 | 3 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 | | S3 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 Quad operational amplifier, DIP-14