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As we know now a days the main problem is charging of a cell phone when we haven't electricity . And this problem is getting bigger when we have more than one cell phone. So here is the circuit which can be solve our problem for charging more than One cell phone. This circuit of the double DC cell phone charger was successfully tried. The required voltages for the operating of this circuit is 12V DC from a battery source.The transistor T1 which we are using is PnP transistor.The general purpose of this transistor is power application e.g driver stages.The IC1 (7805) is a voltage regulator ic which we are using in this circuit. Parts List R1 = 0.1 Ohms 2 watt, R2 = 2 Ohms 2 Watt R3 = 3 Ohms 1 watt C1 = 100uF/25V C2 = 0.1 disc T1 = BD140 D1 = 1N5408 IC1 = 7805

In order to control electrical loads such as heating in the picture below using double pole switch. Double pole switch consists of four terminals. And electric heating load consists of three terminals. In the second switch terminal to get into each phase line (L) and the neutral line (N). While the other two terminals each connected to two terminal heating load. One other terminal on the body burden, directly connected to the grounding line.  a. Electrical circuit drawings double pole switch b. Double pole switch wiring drawings c. Image channel double pole switch