Extra functions on multimeter.

Discussion in 'General Electronics Chat' started by studiot, Jan 23, 2015.

  1. studiot

    Thread Starter AAC Fanatic!

    Nov 9, 2007
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    In the early 1980s I had a multimeter / calculator combined.

    Readings from the multimeter could be transferred into the calculator for further processing.

    At that time I wanted a logic (TTL & CMOS) facility incorporated but could never find one, until now.

    I have just taken delivery of a new multimeter that incorporates CMOS and TTL test settings.

    Now I am having trouble finding some (ancient?) TTL/CMOS circuitry to test!

    What other goodies have people seen / would they desire in a multimeter?

    http://forum.allaboutcircuits.com/attachments/hioki-jpg.4695/
     
  2. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    A graphical display so you know what the frequency measurement function is measuring.

    John
     
    #12 likes this.
  3. #12

    Expert

    Nov 30, 2010
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    99% of the time, I don't need a graph, but it would be wonderful to have a little window that shows me if there is DC under my AC reading or AC riding on what I thought was only DC.
     
    bwilliams60 likes this.
  4. wayneh

    Expert

    Sep 9, 2010
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    A multimeter that is really a handheld oscilloscope sounds sweet to me.
     
  5. ErnieM

    AAC Fanatic!

    Apr 24, 2011
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    Since oscilloscopes themselves have shrunk to just about hand held sizes I'll just keep using my scope as a scope, thanks.

    I like a DVM to be small and relatively simple without a lot of setting to make to make a measurement. I like when I can just set the type (ACV or I, DCV or I, or ohms), tap the circuit for one reading and hit the range button so it sticks. I'm not a huge fan of autorange and get it off as soon as it's done it's job once.

    My standby cheapie from Radio Shack went extremely out of cal (+20% on AC voltage) just before Christmas so I asked for a RS replacement to make it easy for her to find when she demanded some sort of gift list from me.

    It works, like it so far, except it came with a temperature probe and a weird USB cable ("A" plugs both ends) that stay in the box.

    Which means now I have to keep the box so I have another piece of something floating on my work desk.
     
  6. Externet

    AAC Fanatic!

    Nov 29, 2005
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    Hi studiot.

    The feature I would like is the audible continuity tester. But not the typical beeper found in modern meters.
    Could be just an additional very simple circuit to the multimeter, powered by only one 1.5V of the cells inside the multimeter. The multimeter can be off. Independent probe jacks for such.
    I have the gadget in a separate box, and use it very often. Integrating such into the multimeter would be great.

    Tone is 440Hz for zero ohms, and rises to about 1KHz for say 10 ohm. Discussed previously here :
    ----> http://forum.nutsvolts.com/viewtopic.php?f=45&t=7132&hilit=continuity
    ----> http://www.electro-tech-online.com/threads/audible-tones-continuity-tester.139251/
    ----> http://www.edaboard.com/thread306989.html
     
  7. ian field

    Distinguished Member

    Oct 27, 2012
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    They've been around for years.
     
  8. MrChips

    Moderator

    Oct 2, 2009
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    DC, AC Volts
    DC, AC current
    High current range (20A)
    Ohmmeter
    Continuity test, audible output
    diode test
    capacitance
    frequency
    BJT beta (optional)
     
  9. studiot

    Thread Starter AAC Fanatic!

    Nov 9, 2007
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    Is that for heating the coffee?
     
  10. MrChips

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    Oct 2, 2009
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    The DMMs I have seen have current ranges to 200mA. Then there is a separate switch setting and input for 10A or 20A range.
     
  11. ian field

    Distinguished Member

    Oct 27, 2012
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    All mine have a separate socket for tens of amperes ranges.
     
  12. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    Yes, A thermos or coffee maker would be a great addition.
     
    Lundwall_Paul likes this.
  13. ian field

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    Oct 27, 2012
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    A few decades ago, one of the magazines published a coffee keeper warmer to use up all those rusty 2N3055s laying about in the junk box.
     
  14. studiot

    Thread Starter AAC Fanatic!

    Nov 9, 2007
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    Yeah I ground up a whole sack of 3055s, but I'd say the taste was a bit odd.
    Perhaps I didn't roast them properly first.

    :)
     
  15. ian field

    Distinguished Member

    Oct 27, 2012
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    Might have worked better with TIP3055.
     
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