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Reviews Categories | Tools & Test Equipment for the amateur radio work bench | MAT Electronics MUL3333 ESR Meter Help


Reviews Summary for MAT Electronics MUL3333 ESR Meter
Reviews: 1 Average rating: 4.0/5 MSRP: $<50
Description: An inexpensive, analog ESR meter
Product is in production.
More info: http://
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N4UE Rating: 4/5 Jun 25, 2011 09:49 Send this review to a friend
Easy to upgrade  Time owned: more than 12 months
The firm AnaTek sells several different brands of ESR meters/testers. Anyone serious about electronic repair really needs an ESR meter. Makes no difference if the equipment is old or new. Cap failure knows NO age group! ha ha

I also own both the Peak (UK) and EVB (Portugal) meters. There is a side-by-side comparison of the meters on the AnaTek website.
However, I feel the MUL3333 got a bum deal. It is 'not recommended' by AnaTek due to a broken battery holder on the test unit.

Here's my feelings:
- my first ESR meter
- workes great
- inexpensive

Downsides?

- Analog meter too compressed on the low end of the Ohms scale. I have seen some analog units with VERY expanded resistance scales which make the meter useful for checking continunity, grounds, etc.

So, if you are measuring the ESR of a 470 uF cap, rated at 25 VDC, the expected ESR is only .25 Ohms. The meter makes it difficult to tell if the cap is OK or shorted. Larger caps have even lower ESR.
However, I found a good (if inelegent) solution. I put an inexpensive DVM that has a 'buzzer' function, in parallel with the MUL3333. A VERY low ESR will not activate the buzzer but a short will.
This works perfectly and unlike the Peak, no buttons need be pressed, but it also will not give you a cap's value like the Peak will (out of circuit).

Enjoy!!!!

ron
N4UE
 


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