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Std edition 5QESR

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License: TAPR Open Hardware License

Published Time: 2021-04-11 22:08:04
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Description

The 5 Transistor ESR as detailed on the EEVBlog forum.

I have created this project and made up a through hole version of the PCB as part of my Amateur Radio training / Exams.

Feel free to review / use this project. It is not my design that credit goes to Jay_Diddy_B over on the EEVBlog.

73 Paul M6KUR

design drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 10k R2,R3,R13,R22 AXIAL-0.3 4
2 3k3 R4 AXIAL-0.3 1
3 4k7 R5,R7 AXIAL-0.3 2
4 1k5 R6,R11 AXIAL-0.3 2
5 150 R8 AXIAL-0.3 1
6 3 R10 AXIAL-0.3 1
7 30 R12 AXIAL-0.3 1
8 27k R14,R21 AXIAL-0.3 2
9 330 R15,R19 AXIAL-0.3 2
10 1k2 R17,R18 AXIAL-0.3 2
11 33 R16,R20 AXIAL-0.3 2
12 1 R24 AXIAL-0.3 1
13 BC547 Q1,Q2,Q4,Q5 TO-92(TO-92-3) 4
14 BC557 Q3 TO-92(TO-92-3) 1
15 1n5 C2 RAD-0.1 1
16 1u C3,C4 RAD-0.1 2
17 22n C8,C7,C5 RAD-0.1 3
18 2u2 C6 RAD-0.1 1
19 ES1D D1,D2 DO-35 2
20 1N5711W D3,D4 DO-35 2
21 9V DC VIN HDR1X2 1
22 7805 U1 TO220 1
23 100n C10,C9 RAD-0.1 2
24 Meter METER 1X02 1
25 Test Cap DUT 1X02 1

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