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STD Double Stage Sequence Resistor firing
Profile：Timer based MOSFET firing sequence
License: CC-BY-NC-SA 3.0
Project source: Cloned from road
Description
Separation > Satellite deployment> Drogue Parachute> Main Parachute
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 0.1u | C1,C10 | RAD-0.1 | 2 |
| 2 | 1u | C3,C4 | CAP-D4.0×F1.5 | 2 |
| 3 | 1N4007 | D2,D3 | DO-41_BD2.4-L4.7-P8.70-D0.9-RD | 2 |
| 4 | HDR-F-2.54_1x2 | H1,H2,H3,H4,H5 | HDR-F-2.54_1X2 | 5 |
| 5 | HDR-M-2.54_1x2 | J1 | HDR-M-2.54_1X2 | 1 |
| 6 | 2N2222A | Q1,Q6,Q7 | TO-92-3_L4.8-W3.7-P2.54-R | 3 |
| 7 | IRFZ44EPBF | Q2,Q3,Q4,Q5 | PG-TO220-3_L10.0-W4.5-P2.54-L | 4 |
| 8 | 1k | R12,R13,R14,R15,R16,R17,R18,R19,R20,R21,R22 | R_AXIAL-0.4 | 11 |
| 9 | CD4017BE | U1 | DIP-16_16P-L20.2-W6.6-P2.54-LS7.6-BL | 1 |
| 10 | NE555P | U2 | DIP-8_L9.8-W6.6-P2.54-LS7.6-BL | 1 |
| 11 | LM7805CT | U3 | TO-220-3_L10.0-W4.5-P2.54-L | 1 |
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