Bob Parker Blue ESR Tester

My options for testing capacitors are quite limited, up till now my choices were to place a multi-meter on ohms range across them and look to see how fast or slow they charge and discharge over a give range or to desolder them and try and test on the capacitance range on a old multi-meter that has a transistor tester, frequency counter and capacitance checker.

Watching a repair video from one of my favourite YouTube channels “EEVBlog” . Dave Jones was using a older style Bob Parker ESR tester that seemed to do a good job of identifying faulty capacitors. This unit is not available though some that performed a similar task were on offer from all the usual places.

Digging around a bit more I located a seller in the USA selling the latest version of the Bob Parker ESR tester as well as a matching “Ring Tester for High Q Inductive Components” by “AnaTek”.



Both of these Items were available built or in kit form. I decided to buy the kit form.

I was going to just order the Capacitor Checker. At the point of ordering I selected the wrong item! Realising my error I ordered the more expensive Capacitance Tester as well from the same supplier.

Both of these Items were available built or in kit form. I decided to buy the kit form.

Resistors in first

I was going to just order the Capacitor Checker. At the point of ordering I selected the wrong item! Realising my error I ordered the more expensive Capacitance Tester as well from the same supplier.

The case that comes with these is interesting and a has a battery compartment that can take 2 AA cells using the provided spring clip fixings or as in these meters a single PP3.

Each case came with a spare blank end as well as the one with holes for the AnaTek meters on/off switch and test leads. Two grommets were supplied to pass the supplied cable through.

I dislike that feature, so I utilised some cheap terminal posts I have laying around from a past project. These I had to mount in a odd fashion but they work well.

I may get some more modern banana plugs sockets at a later date. They would need mounting in a different location so I have kept the spare end plate just in case.

Posted in Projects, Work Bench

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