There are many methods to measure the DC current. Hall effect sensors and dedicated hall effect current measuring ICs are available to measure Current precisely. But in this tutorial, we are going to cover very basic method to measure current using shunt resistance in the circuit. We will also make our own current sensor and…
I made some projects using Bluetooth in home automation and robotics. But Bluetooth is quite old tech now, also it is not used vastly because of small range. But BLE changes the whole concept of Bluetooth to not use in home automation projects. BLE stands for Bluetooth low energy and keeping low energy in mind…
NTC and PTC are known as thermistors, which can be further known as temperature-controlled resistance. Now something is related to resistance but how it works and which type of circuits can be designed using these components. Let’s know the working concept and then we will use them practically. The value of these thermistors is not…
Previously, I designed an esp8266 shield. And today we will about to know that how to program this esp8266. Because our shield has the same pinout as it is in ESP breakout. Now we will see how to do make all the connections and how to setup Arduino IDE for esp8266 boards. I ordered SMT…
Most of the power electronics system use big heatsink to dissipate excessive heat. Some of these uses active cooling method, by using a fan on heatsink which help to remain the temperatures more stable. But when running these things on a low power fan is still on and feel noisy. So why not to make…
ESP8266 is very powerful and most preferred microcontroller in IoT. This is used worldwide not only because of the wi-fi compatibilities but also due to open-source network. This comes with 32bit microcontroller running at 80Mhz. But it can be overclocked to 160Mhz keeping cooling conditions in mind. ESP8266 is designed on a very small PCB…
I made many amplifiers and preamplifier project in past. But due to the continuous demand I have some new Ideas about amplifiers. But all of them are half without a proper preamplifier circuit. Because preamplifier not only boost the signal but also arrange low and high pass signal on different output channels. Looking into the…
In last tutorial, we made a preamplifier for 5.1 party boom box. Now it is the time for the amplifier. We will design the compatible 5.1 amplifier for this, as mentioned earlier to drive 100watt subwoofer and 4x 25watt speakers. TDA series integrated circuits are best for this purpose that provides a high-fidelity output stage….
I want to make a big party boom box, with a 100watt subwoofer and four speakers of 25 watts each. But we need a better amplifier and preamplifier board which can meet the requirements. I searched a lot but some of the amplifier systems are very expensive or some of them even do not support…
I made many audio amplifiers using Class AB configuration. But, working with those big amplifiers are very heavy job. These amplifiers need more power, dual supply and heavy rectifiers/filtering circuits. We cannot power these Class AB amplifiers using single SMPS, A linear power supply with center tapped transformer is must. Now the real problem comes…
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