Closed loop galvo driver

9 months ago 335
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Description

from http://elm-chan.org/works/vlp/report_e.html

needs a galvo with capacitive feedback, described on this page.

i replaced the clock wit ha tcxo

some parts need to be supplied and fitted indepentenly like the output driver. im using a tda2030 instead of the lm675 since its cheaper

Documents

Logic

PSU

PCB_2020-12-16_21-05-49

BOM

ID Name Designator Footprint Quantity
1 1000uF C1,C2 CAP-TH_BD12.5-P5.00-D1.2-FD 2
2 100nF C20,C21 C0805 2
3 100K R5,R23 R0805 2
4 100uF C3,C4 CAP-TH_BD8.0-P3.50-D1.0-FD 2
5 LM675T U9 T05D 1
6 47K R3,R4,R11,R14,R16,R18,R20 R0805 7
7 KRA101-AT/P Q1 TO-92-3_L4.8-W3.7-P2.54-L 1
8 100 R29,R30 R0805 2
9 CONN-TH_2P-P5.00 IN,GALVO CONN-TH_2P-P5.00 2
10 220uH L1 L1207 1
11 75K R35 R0805 1
12 SRA-24VDC-AL K1 RELAY-TH_SRA-XXVDC-AL 1
13 8MHz X1 OSC-SMD_4P-L3.2-W2.5-BL_SIT8008BI 1
14 2.7K R7,R8 R0805 2
15 20K R12 R0805 1
16 HDR-M-2.54_1x1 TP2,TP1,TP3,TP4,TP5 HDR-M-2.54_1X1 5
17 330 R26,R27 R0805 2
18 L7915CV-DG U2 TO-220-3_L10.0-W4.5-P2.54-L 1
19 33nF C14 C0805 1
20 7815 U1 TO-220-3_L10.0-W4.5-P2.54-L 1
21 220nF C13,C19,C22 C0805 3
22 1nF C6,C9,C10,C11,C12,C15,C16,C17 C0805 8
23 L7805CV U3 TO-220-3_L10.0-W4.5-P2.54-L 1
24 4.7K R37 R0805 1
25 1N4002G D1 SMA_L4.4-W2.6-LS5.0-RD 1
26 R43 R1206 1
27 100pF C18 C0805 1
28 220pF C8 C0805 1
29 1K R28,R38,R40 R0805 3
30 150 R39 R0805 1
31 10K R13,R15,R19,R24,R25,R31,R32,R33,R34,R36 R0805 10
32 1.5K R1 R0805 1
33 0.2 R41,R42 R1210 2
34 10uF C5 CAP-TH_BD5.0-P2.00-D0.8-FD 1
35 CONN-TH_3P-P5.00 FB,PSU CONN-TH_3P-P5.08 2
36 MMSZ5256BT1G D2 SOD-123_L2.8-W1.8-LS3.7-RD 1
37 5K R2,R6,R17 RES-ADJ-TH_3296W 3
38 100K R21,R22 RES-ADJ-TH_3296W 2
39 15K R9,R10 R0805 2
40 10nF C7 C0805 1
41 NE5532DR U4,U5,U6,U7,U8 SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL 5

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