Regulated Power Supply For Medical Equipment, Used In Hemodialysis Machines And Other Equipment

Various physical examinations in hospitals are inseparable from medical equipment. In order to prevent the sudden interruption of the external power supply system from affecting the patient, the hospital generally uses Wide Range Voltage Stabilizer to ensure the normal and safe operation of medical equipment.

1. Response time of power supply

The response time of the voltage regulator will be directly reflected on the medical equipment. The internal structure of the voltage stabilizer is an electronic module. It uses the sinusoidal energy distributor technology to achieve the purpose of voltage stabilizer control by controlling the size of the thyristor conduction angle, integrating voltage stabilization with anti-interference. Its response speed of 4ms/step is the fastest among all wide-range voltage stabilizers. The wide-range voltage stabilizer uses the rotation of the motor to drive the carbon brush to slide back and forth on the autotransformer to achieve the purpose of voltage stabilization. Its production cost is relatively low, economical and practical, and can meet the voltage stabilization requirements of most equipment. However, in terms of response speed, the wide-range voltage stabilizer is undoubtedly dominant, and is usually used in the voltage stabilization of high-precision equipment such as B-ultrasound and hemodialysis machines.

2. Voltage stabilization accuracy

The voltage stabilization accuracy of the wide-range voltage stabilizer is ±2%. Under normal circumstances, DR, CT, MR nuclear magnetic resonance instruments, etc. do not require high voltage stabilization accuracy, so wide-range voltage stabilizers can be selected. However, due to the quality of the power grid and the neutral point offset phenomenon, the output phase voltage 220V and line voltage 380V cannot achieve the expected voltage stabilization effect. In view of this situation, our company has developed a zero line generator, which can be used with a wide-range voltage stabilizer to accurately output the phase and line voltages.

3. Whether there is filtering performance

In medical equipment, some imported instruments, such as blood cell analyzers, have very high requirements for power supply. Usually, the power supply they need has a very high voltage stabilization capability. Some slight changes are likely to cause it to fail to work properly. In this case, it is necessary to use a voltage stabilizer for medical equipment with a harmonic content of less than 5% in the final output waveform.