电子天平是采用电磁力平衡的原理，应用现代电子技术设计而成的。它是将称盘与通电线圈相连接，置于磁场中，当被称物置于称盘后，因重力向下，线圈上就会产生一个电磁力，与重力大小相等方向相反。这时传感器输出电信号，经整流放大，改变线圈上的电流，直至线圈回位，其电流强度与被称物体的重力成正比。而这个重力正是物质的质量所产生的，由此产生的电信号通过模拟系统后，将被称物品的质量显示出来。 

     由于电子天平是利用电磁力平衡的原理，没有机械天平的横梁，没有升降枢装置，全量程不用砝码，直接在显示屏上读数，所以具有操作简单，性能稳定，称量速度快，灵敏度高等特点。目前一般电子天平还具有去皮（净重）称量、累加称量、计件称量等功能。并配有对外接口。可连接打印机、计算机、记录仪等，实现了称量、记录、计算自动化。 

Electronic balance is the use of electromagnetic force balance principle, the application of modern electronic technology design made of. It is said that the coil plate is connected with the power, put the magnetic field, when the object is placed, said that after-hours, down by gravity, electromagnetic coil will generate a force equal and opposite to gravity. Then the sensor output signal, amplified by the rectifier to change the coil current until the coil back to bit, its current strength and the object＇＇s gravity is called proportional. And the gravity is the quality of material produced, the resulting electrical signal through the simulation system, will be called the quality of items displayed.  

     As the electronic balance is the use of electromagnetic force balance principle, no mechanical balance beam, not lifting hub device, the whole weight range do not, directly reading the screen, it is simple, stable, weighing speed, high sensitivity characteristics. The current general electronic balance also has peeled （net） weighing, cumulative weighing, piece weighing functions. And is equipped with external interfaces. Connect printers, computers, recorders, etc., to achieve the weighing, recording, calculation automation.