Ron Harris (footballer) his career. Between 1 April 2009 and 1 April 2010, Harris was attempting to set a new world record in signing the most autographs within a twelve-month period. This is being done via a UK-wide tour and via the sale of signed photos online. On 19 May 2011, he was given "Special Recognition Award" in a Chelsea player of the year ceremony. Ron Harris (footballer) Ronald Edward Harris (born 13 November 1944 in Hackney, London, England), known by the nickname "Chopper", is a former English footballer who played for Chelsea in the 1960s and 1970s. Harris is widely regarded as
Chopper (electronics) formula_12, where formula_4is the average output voltage. Taking a general step-down chopper with voltage source formula_2 which is in series with the chopper switch, inductor, and the load with voltage formula_15. The diode would be in parallel with the series inductor and load. The same way by equating the average inductor current during the turn-on and turn-off time, we can get the average voltage by where formula_4is the average output voltage, formula_17is the duty cycle and formula_2is the source voltage. Taking a general buck-boost chopper which works as steup and down chopper, let the voltage source formula_2 be in series