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 LED flashing circuit using a 555 timer in Proteus ISIS. We will start with one LED, calculate its on and off times, and then connect two LEDs so they alternate. No microcontroller program is needed because the timer and its resistor-capacitor network generate the repeating signal. This is a useful first electronics project because you can see the result while also measuring the signal that produces it. We will connect the circuit step by step, examine the timing capacitor voltage, and compare the calculated period with the waveform in the simulator. The original diagrams and downloads remain in this tutorial. Some historical connections differ from the recommended arrangement described below, so we will identify those differences explicitly. If you are ...
