Low cost Voltage References
                      
Voltagestandard.com
PO Box 1542
Battle Ground, WA 98604 USA
email: doug@voltagestandard.com
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voltagestandard.com had its origins back in 2007 with the publication of our Nuts and Volts magazine article, "Build a .01% Accurate Voltage Reference" http://nutsvolts.texterity.com/nutsvolts/200709/?folio=52.  Since that time we have added products and now manufacture reference assemblies that utilize voltage reference IC's from Texas Instruments (REF5050ID), Linear Technology (LT1021BCN8), and Apex (VRE305A)


Our product line consists of several DC voltage references and two DMM testers



NEW PRODUCT
       VREF10-003, Precision DC Voltage Reference
10VDC, 0.003% accuracy DC voltage reference is powered by two included 9V Alkaline batteries.  Picture on left shows PCB with batteries.  Picture on right shows PCB/batteries installed in optional enclosure with protective acrylic cover plate.                

      

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VREF-01, Precision DC Voltage Reference
  Small, low cost, 0.01% accurate DC voltage reference is powered by included 9V Alkaline battery2.048V, 2.5V, 3V, 4.096V, 4.5V, and 5V units are available.



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 PentaRef, 5 selectable DC reference voltages

PentaRef provides 5 different DC voltages of your choice between 0.1V and 10V - you choose the voltages to suit your needs.  Picture on left shows PCB with two included 9V Alkaline batteries.  Picture on right shows PCB/batteries installed in optional enclosure with protective acrylic cover plate.

                                     

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Vref5-002, Precision DC Voltage Reference
5VDC, .0025% DC voltage reference is AC line powered.




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DMMCheck, DMM Tester
DMMCheck combines a precision 5V DC voltage reference, a precision 1.000mA DC active current source, and three unconnected 0.1%, 25ppm/C resistors (100K Ohm, 10K Ohm, 1K Ohm) for checking Ohmmeter portion of DMM.  Picture on left shows PCB with included 9V Alkaline battery.  Picture on right shows PCB/battery installed in optional enclosure with protective acrylic cover plate.

                                           


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DMMCHECK Plus, DMM Tester
DMMCheck Plus includes all DMMCheck features plus 5VAC voltage and 1mA AC current reference sources, four unconnected 0.1%, 10ppm/C resistors (100K Ohm, 10K Ohm, 1K Ohm, and 100 Ohm) for checking Ohmmeter portion of DMM, and 100Hz 50% duty cycle signal source standard or, optionally, choose any two frequencies between 25Hz and 20KHz.  Picture on left shows PCB with included 9V Alkaline battery.  Picture on right shows PCB/battery installed in optional enclosurewith protective acrylic coverplate.

                                              



For more details, please click on the above pictures



Prices and specifications subject to change without notice.