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STD Tractive System Active Light

License: Public Domain

Mode: Editors' pick

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Update time: 2024-01-06 05:03:39
Creation time: 2023-12-03 10:15:41

The TSAL indicates high voltage on the vehicle side of the AIRs. The circuit has 5 inputs in total, the AIR + coil, B+ and B- Capacitors of motor controller, AIR+ and AIR- contacts. The circuit uses a combination of logic gates, to achieve the required truth table.

A voltage divider, which is a combination of resistors, is used to step down the high voltage coming from AIRs and DC link capacitors. The circuit uses an opto-isolator to isolate the HV and LV on the same board. It also uses a 12V DC-DC convertor to isolate the grounds of HV and LV components. The output of the logic gates then goes to a comparator, which will pull up the value once the input voltage matches the reference.

The output lines control the Vcc of the LEDs, and they are grounded to the chassis. The blinking red condition of the LEDs is controlled by a IC555 timer circuit, using a set of resistors and a capacitor to control the frequency. The TSAL mount is a PLA 3-D printed assembly. It was chosen to reduce weight and achieve flexibility in design.

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ID Name Designator Footprint Quantity
1 SN74HC08NSRG4 AND_GATE_1,AND_GATE_2 SOIC127P600X175-14N 2
2 0.1u C1,C2,C3,C4,C5,C6,C7,C8,C9,C11,C12,C13 C1206 12
3 0.01u C10 C1206 1
4 10u C14 CASE-A_3216 1
5 10u C15 C1206 1
7 HDR-F-2.54_1x6 H1 HDR-F-2.54_1X6 1
8 HDR-F-2.54_1x3 H2,H3 HDR-F-2.54_1X3 2
9 7805L IC1,IC2,IC3,IC4,IC5,IC6,IC7,IC8,IC9,IC11 TO92 10
10 CD4043BD IC10 SOIC127P600X175-16N 1
11 LED-0603_G LED1,LED4,LED5,LED7 LED0603_GREEN 4
12 LED-0603_R LED2,LED3,LED6 LED0603_RED 3
13 SN74LS02DR NOR_GATE1 SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL 1
14 SN74HC04NSR NOT_GATE SOIC-14_L10.0-W5.5-P1.27-LS7.8-BL 1
15 OC1 4N33 OK1,OK2 DIL06 2
16 74HC4075D,653 OR_GATE SOIC127P600X175-14N 1
17 B1212S-1W_C5127060 PW1 PWRM-TH_B1212S-1W 1
18 30K R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12,R13,R14,R15,R16 R1206 16
19 10kΩ R17,R26,R38,R41,R45 RES-ADJ-TH_3296W 5 10K
20 2k R18,R19 R1206 2
21 10k R20,R21,R22,R23,R24,R25,R27,R28,R29,R30,R33,R39,R40,R42,R44,R48,R50 R1206 17
22 1.5M R31 R1206 1
23 1M R32,R47 R1206 2
24 0.120k R34,R35,R36,R37,R43,R49 R1206 6
25 47k R46 R1206 1
26 IRF9530PBF-BE3 U1 TO-220AB-3_L10.3-W5.0-P2.54-L 1
27 NE555_C5125085 U2 SOIC127P600X175-8N 1
28 Red NMOS U3 TO-220-3_L10.1-W4.7-P2.54-L 1
29 Green NMOS U4 TO-220-3_L10.1-W4.7-P2.54-L 1
30 TS_off NMOS U5 TO-220-3_L10.1-W4.7-P2.54-L 1
31 TS_off_SCS_NMOS U6 TO-220-3_L10.1-W4.7-P2.54-L 1
32 Seconds NMOS U7 TO-220-3_L10.1-W4.7-P2.54-L 1
33 NE555_NMOS U8 TO-220-3_L10.1-W4.7-P2.54-L 1
34 MM74HC86M XOR_GATE SOIC127P600X175-14N 1


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