Now in its sixth edition, ELECTRICITY AND CONTROLS FOR HVAC-R equips readers with the information needed to work effectively with all types of motors and control devices found in the heating and air-conditioning industry. Prior knowledge of electricity is not required as this book begins with discussion of essential basic electricity and electrical circuits concepts. Numerous schematic diagrams and step-by-step troubleshooting procedures are included to acquaint readers with all of the different types of circuits commonly encountered in the HVAC-R field. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.Although the SCR has a voltage drop of 200 volts, there is no current flow in the circuit. The SCR does not have to dissipate any power in this condition (200 volts X 0 amps = 0 watts). When the push button is pressed, the SCR will turn on.
|Title||:||Electricity and Controls for HVAC-R|
|Author||:||Stephen Herman, Bennie Sparkman|
|Publisher||:||Cengage Learning - 2009-06-12|