Hello friends! Today we will design a regulated 5 V DC supply in Proteus using a 7805 regulator. We will connect the input, bypass capacitors, indicator and load, then calculate the current and heat so that the simulation becomes a useful starting point for hardware. A regulated supply is often the first circuit a project needs, but the required voltage depends on the actual components. Some circuits use 5 V, others 3.3 V or different rails. Batteries also come in many voltages; the original article's statements that all batteries are 12 V and all electronics operate at 5 V were incorrect. For this exercise, we will deliberately choose a suitable 12 V DC source and a modest 5 V load. The original diagrams and download remain below, with corrections to capacitor values and LED current limit ...
Hello friends! Today we will build an adjustable DC supply using an LM317 voltage regulator in Proteus. We will calculate the output-setting resistors, check the available voltage range, and see why load current and temperature matter as much as the potentiometer setting. Our earlier 5 V supply using a 7805 provides a fixed output. The LM317 uses an external resistor network to set its output, making it useful when a project needs a different low-voltage supply. It does not, however, provide every voltage from zero to the input voltage. The original motor demonstration, images, video and download remain in this tutorial. We will explain the historical readings while correcting its missing LED current limiter, capacitor choices and assumptions about the maximum output. Start with a resistiv ...
