A 5 V zener diode is used to regulate the voltage across load resistor RL and the input voltage varies in between 10 V to 15 V. The load current also varies
1PCS MultiComp 1N5233B Zener Single Diode, 6 V, 500 mW, DO-35 - New 631846824972 | eBay
Purchase online in India Zener Diode 6 Volt 0.25 Watt at low cost from DNA Technology, Nashik.