Question

Draw a circuit diagram of a simple unregulated power supply. The mains voltage is transformed down to 50Vrms. This voltage is then full-wave rectified and smoothed in order to provide power to a 1.5Ω resistive load.

Answer 1

The drawing of a circuit diagram with a simple unregulated power supply can be found on the attachment. It is a simplified diagram and does not include components like a fuse or voltage regulator. Real-world power supplies would include these additional elements for safety and stability.

Step-by-step explanation:

The circuit begins with the 230Vrms mains voltage entering a step-down transformer. This transformer reduces the voltage to 50Vrms, a more manageable level for our circuit.The 50Vrms AC voltage then enters the full-wave rectifier. This circuit converts the AC voltage to pulsating DC voltage, meaning it will still have positive and negative peaks but no negative cycles.

A capacitor (C) is connected across the output of the rectifier. This capacitor acts as a reservoir, smoothing out the pulsating DC voltage and storing energy during peak voltage periods. This results in a more stable DC voltage at the output.

Finally, the DC voltage is delivered to the 1.5Ω resistive load. This load will dissipate the electrical energy as heat.