LM2931CT IC
V REG LDO ADJ +3/24V, 2931, TO2205

LM2931T-5.0 Integrated Circuit
V REG LDO +5.0V, 2931, TO-220-3

LM3080N IC
Transconductance Op Amp - Single, prog. bias
equivalente a CA3080

LM311N IC
Response Time:200ns; Output Type:RTL, DTL, TTL, MOS; Supply Current:5.1mA; No. of Pins:8; Operating Temperature Range:0°C to +70°C; SVHC:No SVHC

LM317AT Voltage regulator
Stabilizzatore di tensione; regolata; 1,2÷37V; 1,5A; TO220; THT