1
Q
What are the 3 things a PSU must be?
A
- Electrically safe (as per IEC 60601-1)
- Provide means of protection for the operator and patient
- Have low leakage current (as per IEC 60601-1)
2
Q
What are the 4 important criteria when select a PSU?
A
- Output voltage and current
- Power rating
- Form factor
- Thermal management
3
Q
What do medical grade inlet filters do?
A
Help reduce conducted emissions
4
Q
What is leakage current?
A
Any current that is non-functional
This could be current that flows from the intended circuit to ground, the chassis, or other conductive parts
5
Q
What does ferrite do?
A
Reduces high frequency noise
The ferrite’s reactance increases at higher frequency which reduces unwanted noise
6
Q
A
