DOCUMENTATION AND OTHER VENDOR REQUIREMENTS FOR CAR CIGARETTE LIGHTER ADAPTORS

EMC REPORT COVERING:

AS/NZS CISPR 22:2009
Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement
Note CISPR 22 and CISPR 13  will eventually be replaced by the combined standard AS/NZS CISPR 32

OTHER MANDATORY REQUIREMENTS:

CAR ADAPTOR
Car DC (Cigarette Lighter) adaptors must meet the following requirements:
• A fuse or PTC overload protector must be fitted in the 12V input line
• If supply current runs from the positive  contact through a tensioning spring, the spring must not produce a voltage drop of more than 250mV at the maximum rated current.
• If a voltage regulator is used, it must be able to cope with the normal range of voltages expected in an automotive enviromnment - up to 17V.
•  If a voltage regulator is used, output over-voltage protection must be provided in the event of a short-circuit regulator. Typically this will be a 1W zener diode with a breakdown voltage about 20% higher than the rated output voltage.