This is a circuit diagram of a lab bench power supply circuit. The circuit consist of different dragon which was also implement in the circuit diagram.some of the design implemented in the circuit include, short circuit protection,zener diode tester, continuity tester(which also implemented with a buzzer, boost converter,battery level indicator,6A 26v output supply. Part list:6A rectifier diode,capacitors(value is displayed at the circuit diagram),resistors(values are displayed at the circuit diagram),led,7812 voltage regulator ic,transistors,cd4017 counter, buzzer, USB female connector,stepdown transformer ,7805voltage regulator etc.Circuit explanation:The circuit is a full rectification circuit.where by the diode converts the ac(alternating current)voltage to a DC voltage, the capacitor filter the output voltage from the diode then after the capacitors filter the voltage a 7805(it should be placed on a proper heat sink to avoid damaging the ice) voltage regulator ic is connected to to get a 5v output which will be used to charge a cell phone as designed in the circuit diagram a 12v voltage regulator ic was connected to the circuit to deliver a 12v output to the remaining part of the circuit.Thanks
