Secret Techniques
The only unbreakable skill in the world is speed.
Specially gifted 300-character aphorism
Please treasure it.
—— M. Gong
A regular circuit board is composed of millions
Recognizing the appearance of components is key
Resistors and capacitors are the most common failures
Resistor values can easily change, capacitors leak and lose charge
Inductors transform voltage; simple tests check continuity
Diodes and transistors test the PN junction in both directions
MOSFETs and thyristors require critical triggering tests
All of the above are discrete components integrated over many years
Analog devices use operational amplifiers to judge virtual short and virtual terminals
Optocouplers isolate damage between stages, which is very common
Digital devices are often seen
40 and 74 series at the front
Also, testing analog-to-digital converters can be very labor-intensive
Don’t forget that programming ROMCPLD requires a programmer
CPU, microcontrollers,
Timing judgment logic instruments
Various sensors have the highest failure rates
Source: Medical Repair Help
You may also want to check these, click the image to view:
2017 Eighth “China Good Medical Engineer” Excellent Clinical Engineer Selection Event
2017 Famous Teachers’ Class – “Principles and Maintenance of Medical Power Supplies, Prevention and Handling of Common Endoscope Failures”
2017 China Medical Equipment Industry Data Survey – Fill out the questionnaire for great gifts!
