Every Electronic Device, has to be either directly plugged into a power source or operate from a battery source which makes it mandatory to have some level of Power Supply Circuit within it. Depending on the application these circuits can be a simple, AC-DC Converter, DC-DC Converter or a Battery Charger. In this section we will design and test various types of power supply circuits that can fit into a wide verity of applications including SMPS Power Supplies, LED Drivers, Battery Chargers etc. Each article includes a well-illustrated circuit diagrams and hardware demonstration to help the readers to build and evaluate their own designs.
You’ve just finished assembling an electronic project and are ready to power it up, only to realize the battery might be connected backwards. In an instant, a simple mistake can destroy hours of work. Reverse polarity is one of the most common causes of circuit failure, from hobby projects to industrial systems. The good news is that a well-designed reverse polarity…
Nowadays, many people are turning towards green solutions to lead healthier lives. Efforts are being made to grow plants, which contribute to maintaining the stability of nature. The key challenge in growing plants is maintenance, particularly ensuring they receive adequate watering. Despite our best intentions, we may forget to water our plants at times. To address…
While making a customized RGB LED set up at our home, basically it was a bunch of addressable 5v LEDs the WS2812, but unfortunately, we didn't have a high current power source to light them up properly. Since there was a lot of them, it required around 9 Amps of current to lighten up at full brightness. This led us to design one Power Supply for this purpose, as well…
Switch Mode Power Supplies (SMPS) are one of the most generally used AC-DC Converters on the market as they accept 110V/230V AC as input and convert it to a desirable DC voltage level, making them useful for a wide range of applications. These are omnipresent, from smartphone chargers to lab bench power supplies to medical tools. We've already developed a few SMPS…
Switching Mode Power Supply (SMPS) is an interesting component that uses a compact design within a space of one or two inches and could be easily soldered in the PCB. It is a hot cake in this electronics industry and there are lots of companies that manufacture this thing. How nice it would be if we can build a standard SMPS circuit that could be fitted in a limited space…
Today, our desks are full of devices that require connection to be connected with the PC via USB, or we need to work with multiple devices that have USB ports. It became a problem as Laptops lack multiple ports, and this is where a USB hub or USB Port Extender comes in handy. This comprehensive guide demonstrates how to build a professional DIY USB hub with a power supply using…
Switched-mode power supply circuits (SMPS) are most often required in many electronic designs to convert the AC mains voltage to a suitable level of DC voltage for the device to operate. This type of AC-DC converter takes in the 230V/110V AC mains voltage as input and converts it to low-level DC voltage by switching it, hence the name switch-mode power supply. We have…
Switching Mode Power Supply, or simply SMPS, is a type of Power Supply Unit (PSU) that uses a switching device (such as a transistor or MOSFET) to convert the source, which can be AC or DC, to a constant DC voltage. Switched-mode power supply circuits (SMPS) are most often required in many electronic designs to convert the AC mains voltage to a suitable level of DC voltage…
Many Analog Electronic circuits require dual power supply rails for proper balanced operation one being the Operational amplifier circuit. Negative supply voltage is also required in digital systems like A/D converters, op-amps, and comparators. In our previous tutorial, we built a +12V and -12V Dual Power Supply Circuit and a +5V and -5V Dual Power Supply Circuit but the…
Raspberry Pi is a small or mini-computer that can be used in different types of small to large embedded, IoT, Industrial IoT applications. As this is a computer that could run different operating systems, a shutdown of this minicomputer is an important thing to ensure that everything is saved, the operating system properly ended all required tasks, and it is safe to turn the…
AC LED driver circuits are overly popular due to the advancement of High current white LEDs. We already made a Transformerless LED driver circuit previously, but in that circuit, we used a dedicated LED driver IC like LNK304 to generate 13.6V 150mA of output current to power LEDs. But in this tutorial, we will not use any dedicated driver ICs, but we will make a 2.5 Watt AC…
A Switch Mode Power Supply (SMPS) is an indispensable part of any electronic design. It is used to convert mains high-voltage AC to low voltage DC, and it does it by first converting the mains AC to high voltage DC, then switching the high voltage DC to generate the desired voltage. We have already made a few SMPS circuits earlier, like this 5V 2A SMPS circuit and 12V 1A…
