Products > Test Equipment
Mastech MS5308 LCR meter with ESR measurement - on discount at the moment
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robrenz:
Same answer as in your other thread.  AFIK the MS5308 uses the same chipset as the DE-5000. It has 0.5 Vrms excitation voltage or .707 peak. lower but I still dont think considered in circuit levels. 

I don't see a user cal button/feature on the MS5308 manual .  This is a big deal if you intend to use tweezers or external clips.

Edit: The cal button is on the top of the case. The DE-5000 manual shows how it works.

LaurenceW:
You'll find b*gg*r all in the Mastech manual! it's a wsate of paper.

Yes, get hold of the DE-500 manual - it all applies to the Mastech (which does have a calibrate button, as you point out).

Lots of talk of probe measuring voltages, so here are some actual figures (across a 1uF mylar cap)

At 100 Hz - 1.9V pk-pk AC waveform about 0V
At 1KHz - 1.4V pk-pk AC
At 10KHz 250mV Pk-Pk
At 100KHz 28mV Pk-Pk

And across a "typical" supply cap of 470uF (standard, not particularly high quality low ESR)

at 100 Hz - 55 mV Pk-Pk on a tiny DC offset
at 1KHz - ~15mV Pk-Pk
higher frequencies - unmeasurable!

So in practice, in-circuit measurements are often way below transistor junction turn-on voltages.
jtronix:
ok..

more than 1KHz test frequency in circuit measurement is not possible??

m i right???

which one is cheap and better ESR meter please suggest
T4P:
NO! It's good for in circuit measurement.
kripton2035:

--- Quote from: jtronix on November 17, 2012, 02:08:38 pm ---ok..
which one is cheap and better ESR meter please suggest

--- End quote ---

here : http://kripton2035.free.fr/esr-repository.html
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