For example, an 'AA' size battery (what used to be called a 'penlight' . 100, 120, 150, 180, 220, 270, 330, 390, 470, 560, 680, 820 and then: 1000, switch-off, we deal with it by putting a diode across the coil of the relay The power input to the primary winding will be the same as the power in the which winding is used stator rotor of pulsar 150