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Application Note Regarding H Bridge Design and Operation
www.egr.msu.eduAn H Bridge is a set of four switches that are assembled in such a way that an arbitrary load impedance is decoupled from a direct current (DC) power rail and ground. These switches can then be used to control the direction of current running from the DC source to ground in either direction across the connected impedance.
CHAPTER 4 PROTECTIVE DEVICES COORDINATION
www.pdhonline.coma set of coordinated cu rves on one composite time-current graph. b. Data required for the coordination study. The following data is required for a coordinatio n study. (1) Sin gle-line diagram of the system under study. (2) System voltage levels. (3) Incoming power supply data. (a) Impedance and MVA data. (b) X/R ratio.