What is an ESR Meter?
The Blue ESR meter is an in-circuit capacitor tester.
ESR stands for Equivalent Series Resistance. This parameter is
a particularly critical for capacitors - especially electrolytics.
Take a look at pretty much any electronic circuit and you will see
electrolytic capacitors. They are critical to the function of just
about everything. And yet they are one of the few components that can
degrade severely over time. Electrolytic capacitors contain an
electrolyte (you would never have guessed that right?). They are
sealed during manufacture but even the best seals fail. Once the seal
goes, the electrolyte starts to dry out. As it dries, key parameters
of the capacitor start to change including its ESR. In fact high ESR
is a good indication of a faulty capacitor and can be often be
detected before it fails - causing other more expensive damage.
 Inside the Blue
ESR Meter What does an ESR meter do?
An ESR meter is an "in circuit" tester. Unlike a simple capacitance
meter it can check ESR without having to remove the capacitor. ESR
cannot be measured with an ordinary multi-meter - nor can it be
measured with a capacitance meter. That's why the Blue ESR meter will
save you both time and money! It provides an accurate measurement of a
wide range of ESRs. Imagine how useful it would be for
restoring that old radio or repairing that TV?
Read more
about the importance of ESR here. The Blue ESR
Meter The Blue ESR meter was designed by
Bob Parker
- ESR Guru. The unit is supplied either built or an an enjoyable
"home-build" project.
The picture to the above shows the contents of the kit you will
receive:
 | all electronic parts |
| Enclosure, |
| solder masked pc board |
| labels |
| test leads with 4mm shrouded plugs installed |
| alignment and test resistors |
We will email you a copy of the assembly manual and
troubleshooting guide but you can also download it
here.
| Tools needed: |
| Solder iron with small tip (40 - 60 watts is
ideal) |
| Rosin core solder |
| Needle nose pliers |
| wire stripper |
| wire cutters - small diagonal cutter is ideal |
| #1 Philips screwdriver |
Assembly time will be 1 1/2 to 2 hours with average
soldering skill. See what
others have to say. Specifications:
| Measurement range: 0.01 to 99 ohms, auto-ranging
|
| Peak voltage across capacitor under test @ full
scale: 100mV |
| Update speed: 4 readings/second |
| Power supply: 9 volt battery (not included) |
| Controls: Single push button for power on/off
and zero |
| Dimensions: 5.75x3.5x1 inches (147x86x24mm) |
Features:
| Tests electrolytics in circuit, & test leads are
non-polarized |
| Test lead resistance compensation |
| Automatic power off when reading is unchanged
for 3 minutes |
| Low battery voltage warning |
| Easy-to-read, high brightness 0.5 inch (13mm)
piercing blue LED display |
| Chart of good capacitor ESRs on the front panel |
What else? It is a great unit
for checking high current power leads. It can also be used as a simple
audio signal generator for testing audio circuits. It also generates a
useful pulsed RF signal that can be used to test receivers up to
30MHz.
Kit Fault Finding Page - click here!
Helpful Forum - Click here!
Prices
Kit. just £59.95, FREE p&p (VAT included)
Assembled and tested, just
£75, FREE battery and p&p (VAT
included) - note these units are built to order which may take a
few days.
FREE P&P for Eu countries only.
See also the NEW
Blue FBT Tester!
Order by phone
Call us on 01625-425700 to place
your order by credit or debit card. This is our preferred
payment method!
Online Purchase
BLUE ESR Kit - £59.95 FREE p&p (Eu
countries only)
BLUE ESR - BUILT £75, Free
battery and free p&p (Eu countries only
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