ESR Meter
The schematic of this meter was published in an Italian magazine Nuova Elettronica No. 212.
Overview
The schematic of this meter was published in an Italian magazine Nuova Elettronica No. 212. I found it more than five years ago on Talino Tribuzio's IZ7ATH site when I was looking for a simple ESR meter circuit.
Reference circuits
R1 = 1.5K
R2,R3,R4,R5 = 10K
R6 = 68K
R7 = 4.7K
R8 = 12K
R9,R11 = 1K 1%
R10,R12 = 22 1%
R13,R14 = 1K
R15,R16,R17 = 47K
R18 = 15K
R19 = 680
R20 = 2.2K
R21 = 20K TRIMMER
C1,C2 = 1uF electrolytic
C3 = 1nF POLY
C4 = 100nFF POLY
C5,C6 = 1uF POLY
DS1, DS2 = 1N4007
DS3 = 1N4148
TR1,TR3 = BC547
TR2 = BC557
IC1 = TL084
Project goals
- Fitting the circuit in an enclosure box.
- Dual power supply battery and external.
Schematic
Mechanics
A ready available 118x78x33mm plastic box which was purchased on AliExpress. The box is made of a good quality plastic, has enough space for the PCB and a battery compartment.
PCB
Assembled device
Alignment
Links
- http://fillwithgoodthings.blogspot.com/2013/05/esr-meter-schematic.html
- http://kripton2035.free.fr/analog%20esr/esr-poptronix.html
- http://electronics-diy.com/electronic_schematic.php?id=950
- http://www.geocities.jp/shoranosekai/ESR_Tester_Schematic.jpg
- http://ludens.cl/Electron/esr/esr.html
- http://electronics-diy.com/electronic_schematic.php?id=949
How to Support or Say Thanks
If you like this project, or found here some useful information and want to say thanks, or encourage me to do more, you can buy me a coffee!
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73 de 4X1MD