| 摘要 |
The device (D) has a battery (16) for supplying power to an electric aspiration pump (11) i.e. diaphragm pump. A regulation unit is formed by a transformer, a 12 V regulator and a linear motion (LM) regulator for maintaining the supply voltage of the pump to a predetermined value. The pump is supplied by a voltage of 12 volts. A potentiometer of the regulation unit detects the terminal voltage of the battery to cut the power supply of a motor (12) when the terminal voltage of the battery is less than a predetermined value. |
