REVERE – A Revere man pleaded guilty Tuesday to charges he fraudulently collected over $15,000 in unemployment benefits, according to the Attorney General’s Office.Christopher Bonsall, 28, was charged with 30 counts of unemployment fraud and larceny over $250 by a single scheme.Bonsall originally pleaded innocent but changed his plea to guilty Tuesday before Suffolk Superior Court Judge D. Lloyd MacDonald sentenced him to pay $15,840 in restitution and serve three years of supervised probation.The defendant received state unemployment benefits between May and December 2005, authorities said. Investigators alleged Bonsall claimed to have been separated from his employer, DuGomes Corp., despite the fact that the corporation “involuntarily dissolved” in 1990, the Attorney General’s Office said.You can report unemployment fraud by contacting a free, anonymous hotline run by the Department of Workforce Development’s Division of Unemployment Assistance at 1-800-354-9927.