EDISON - New federal rules took effect yesterday designed to offer more protections to users of credit cards.

Among the new protections, credit card issuers are barred in most cases from charging a penalty fee of more than $25. So-called "inactivity" fees based on the consumer's failure to use an account to make new purchases are also banned.

Some financial analysts fear these new restrictions will result in less available credit and higher monthly minimum payments.

Details of the new rules can be found on the Federal Reserve's website.