The background of the multimeter product industry

In life, it is inevitable that you will have a failure of electronic products. At this time, you need to use a multimeter to detect the quality of the components in the circuit. The universal meter is an indispensable measuring instrument for electrical electronics and other departments. It is widely used in schools, factories, individuals, etc. It is an electronic measurement instrument with a huge demand.

The main function of the multimeter

The multimeter is generally the main purpose of measurement voltage, current and resistance. The universal table is divided into pointer universal tables and digital universal meters in the display mode. It is a multi -functional, multi -range measuring instrument. Generally, universal meters can measure DC current, DC voltage, AC current, AC voltage, resistance and audio levels. Some parameters (such as β).

Universal meter plus voice value

First of all, when opening the voice multimeter, you will play a sentence "Welcome to use XX Voice Voice Master Watch" to create your own multimeter brand, and you can also add a personality switching sound effect.

The multimeter is an indispensable measuring instrument for the electronic department. It is very frequent to use the multimeter. Most of the multimeter now uses pointer and LED screens to display data, which is extremely inconvenient for middle -aged and elderly people, especially those with poor vision; it is not convenient to use places with insufficient light at night. If the voice function is added to the multimeter, you do n’t need to look at it with your eyes, and you can listen directly with your ears, which is much more convenient. There are also alarms when testing abnormalities.

Recommended chip advantage

The NV080D voice chip produced by our company has 80 seconds of voice duration, the voice is clear and bright, the volume is small, the price of the low single chip sound chip, the voice alarm chip, the audio sampling rate of the alarm chip can reach 32kHz (if there are special needs, it can Configure 64kHz), 8-level sound control, audio output method, PWM output accurate +/-1%internal shock, no external shock, high-power stand-up standby, satisfying the content of universal watch voice, simple circuit board design simple design need. The voice applied on a multimeter is: 1. The warm boot "Welcome to use the XX card voice multimeter"

2. The sound effect of the opening of the machine

3. The current current; the current voltage

4. Alarm sound ------