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About "touch parts" or "applied parts" (AP) are usually applied to medical equipment that has "direct contact" with the patient.
It can be divided into three main types:
• Type CF (Cardiac Floating): It is the most rigorous classification, connected to the patient's heart (cardiovascular), such as: dialysis machine, heart rhythm regulator.

• Type BF (Body Floating): Compared with the less rigorous classification of CF, there is electrical contact or medium-to-long-term contact with the patient, but it is not directly connected to the heart. For example: blood pressure monitoring equipment, ultrasonic equipment and incubators, etc.

• Type B (Body): The least rigorous classification, can be grounded but has no electrical contact with the patient, and can be immediately removed from the patient's contact site. For example: MRI equipment, medical laser equipment, hospital beds, light therapy equipment, etc.

The Type CF and Type BF equipment can also be referred to as F-type applied part, because it will contact the patient, so it is necessary to regulate the grounding method and the amount of current passing through the human body.

As for the grounding method, Type B equipment does not touch the human body during use, so it can be directly grounded. But for F-type (Type BF, Type CF), it must be floating with the ground. Isolated and cannot be directly grounded.

When the output is a rated load, the ambient temperature is 25 ° C, and the maximum inrush current when the input is 240Vac during cold start is 60A.

When power is on or off, max. 10%

1. Transformer voltage constant pressure required electric appliance demand voltage pressure anastomosis.
2. Transformer current is large or small.

Turning light means that the charger changes from red light to green light. When the current changes from large to small and reaches a certain value, the two-color LED changes under the current change. Indicates that charging is complete.

The rated voltage is fixed with a tolerance of 10%. The actual power and current of the motor vary with the size of the load being dragged.

The actual conversion efficiency of power supply products is generally between 50% and 70%. In other words, when the power supply outputs 300W, the AC power actually input from the mains will be approximately 429W to 600W.

It is a unique physical quantity in an AC power system. It is the ratio of the effective power consumed by a load to its apparent power. It is a dimensionless quantity between 0 and 1.

The output short circuit will short-circuit the output positive and negative together to see if the power supply has a bad condition. The commonly used test method is to investigate the short-circuit input power, and look at the input power of the AC output when the output is short-circuited. Less than a certain value.