DT830B MANUAL PDF

It has diode and transistor test functions as well. The photographs and circuit diagram in this article may be of interest to engineers who need to repair their meters. This meter has Chip on Board COB package inside, and the designation leads me to believe that this meter has the Intersil ICL single chip solution, or perhaps a variant of that design. This is an affordable pocket meter that works reasonably well for the price. I was not expecting anything to arrive, however two weeks later it arrived all the way from China, in a neat little box.

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It has diode and transistor test functions as well. The photographs and circuit diagram in this article may be of interest to engineers who need to repair their meters. This meter has Chip on Board COB package inside, and the designation leads me to believe that this meter has the Intersil ICL single chip solution, or perhaps a variant of that design.

This is an affordable pocket meter that works reasonably well for the price. I was not expecting anything to arrive, however two weeks later it arrived all the way from China, in a neat little box. I decided to write this article because I was amazed to see how cheaply they are able to manufacture these gadgets and send them.

I installed it with this battery and tested some of the functions, and surprisingly it seems to be working fine. It will also display the battery symbol, with a depleted battery.

Test Leads The test leads for this meter appear to be the same size and design as that of the Mastech meter. This will of course be a problem for measuring large currents, but fine for small currents less than an ampere.

The conductors of the octal socket are buried 6 mm deep to provide reinforced insulation. This additional insulation ensures that this instrument meets the CAT II safety standard, as well as the IEC requirements; however, I have not tested the high voltage capability.

Transistor Test I tested a couple of faulty transistors, and it provided accurate readings, which was very impressive for this little gadget. Other Models in the Series The meter unpacks with a small user manual in which the manufacturer indicates that they have other models with additional functionality.

There are models that can measure temperature, provide audible continuity function, and even a signal generator function. Conclusion I tested it for low voltage and low current applications up to 20 V and 1 A and it seems to be operating fine.

The resistor measurement is good enough, and the transistor test was accurate enough to be of some usefulness. The diode test was also fine.

This might turn out to be a good product for beginners and hobbyists working with low voltages. The cost of a meter can vary from as little as two pounds, such as the one shown here, to several hundred pounds. It certainly seems possible to obtain a very low-cost meter that performs a reasonable job of measuring low voltages, for hobby and student use.

With the current inflation, child poverty rising, shrinking education budgets, many students might be interested in buying this. This Article Continues

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Manual do Multimetro DT830B

If the voltage to be measured is not known, set the range switch at the highest range position and then reduce it until a satisfactory resolution is obtained. Read the voltage value and polarity on the LCD display. For measuring currents between mA and 10A, insert the red lead into the "10A" unfused jack. Note: If the resistor being measured is connected to a circuit, turn off power and discharge all capacitors before applying measurements! Transistor test Before attempting to insert transistors into the socket for testing, always be sure that test leads have been disconnected from any measurement circuits. Also, components should not be connected to the hFE socket when making voltage measurements with the test leads!

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