Advantages and disadvantages of Analog Multimeter
1, the pointer is an average meter multimeter, it has a visual image of reading instruction. (General readings are closely related with the pointer to swing angles, so it is intuitive.)
2, Analog Multimeter generally no internal amplifier, so the less resistance, such as the MF-10 type, the DC voltage sensitivity of 100 k ohms / volt. MF-500 type of DC voltage sensitivity of 20 thousand Euro / volts.
3, Analog Multimeter because resistance is smaller and more discrete components, the shunt voltage divider circuit. So is the uneven frequency characteristic (relatively speaking digital), while Analog Multimeter relatively better frequency characteristics.
4, Analog Multimeter internal structure of simple, low cost, less functionality, easy maintenance, over-current overvoltage ability. Welding
5, Analog output voltage meter high (10.5 volts, 12 volts, etc.). Current is large (such as MF-500 * 1 Europe's largest with 100 mA or so files) can easily test the SCR, light-emitting diodes.
Advantages and disadvantages of digital multimeter:
1, the digital multimeter to take the style meter is instantaneous. It uses a sample taken 0.3 seconds to display the measurement results, and sometimes the results of each sample is very similar, not identical, this result is not as good pointer for easy reading.
2, the digital multimeter due to internal use of the op amp circuit, the resistance can be done very often in the 1M ohm or greater. (Ie, higher sensitivity can be obtained). This makes the impact of the circuit under test can be smaller, higher measurement accuracy.
3, digital multimeter using a variety of internal oscillation, amplification, frequency protection circuit, so the more functions. Can be measured such as temperature, frequency (in a lower range), capacitors, inductors, signal generators, etc do.
4, the digital multimeter due to internal structure of multi-purpose integrated circuit overload so bad, (but now some have been able to automatic transmission, automatic protection, but the use of more complex), usually after the damage is not easy to repair.
5, digital multimeter output voltage is low (usually less than 1 V). Voltage characteristics for some specific components of the test inconvenience (such as SCR, LED, etc.).
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