AN2451
Safety precautions
Doc ID 12791 Rev 3
9/55
2 Safety
precautions
The board must be used only by expert technicians. Due to the high voltage (220 V ac)
present on the parts which are not isolated, special care should be taken with regard to
people's safety.
There is no protection against high voltage accidental human contact.
After disconnection of the board from the mains, none of the live parts should be touched
immediately because of the energized capacitors.
It is mandatory to use a mains insulation transformer to perform any tests on the high
voltage sections (see circuit sections highlighted in
instruments like Spectrum Analyzers or Oscilloscopes are used.
Do not connect any oscilloscope probes to high voltage sections in order to avoid damaging
instruments and demonstration tools.
Warning:
ST assumes no responsibility for any consequences which
may result from the improper use of this tool.
