NPN Transistor
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Joule Thief Circuit: A Low-Power Voltage Booster The Joule Thief Circuit is a simple and clever electronic design that can power an LED using a nearly dead battery. The project demonstrates how basic components like a transistor, a toroidal coil, and a resistor can work together to boost a low input voltage to a usable output voltage. By building this circuit, we can explore how a nearly dead battery's energy can… |
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Ultra-Low VCE(sat) NPN and PNP Bipolar Transistors from Diodes Incorporated Maximize Power Density and Efficiency in Compact Automotive Designs Diodes Incorporated (Diodes) (Nasdaq: DIOD) today announces an expansion of its automotive-compliant* bipolar transistor portfolio with the introduction of the DXTN/P 78Q & 80Q series. These ultra-low VCE(sat) NPN and PNP transistors deliver industry-leading conduction efficiency and thermal performance, optimized for demanding automotive power switching and control. The twelve high… |
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Long Range Arduino Based Walkie Talkie using nRF24L01 We are living in the era of 5G and 5G-enabled devices; however, old technologies like the walkie-talkie system and RF communication system are still paramount in scenarios where a remote, short-distance, cheap, and low-cost communication is required. For example, if you have a building or heavy-weight bearing construction company, then your workers need to communicate with… |
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Designing an AND Gate using Transistors As many of us know, an Integrated Circuit or IC is a combination of many small circuits in a small package which together perform a common task. An Operational Amplifier or 555 Timer IC is built by a combination of many Transistors, Flip-Flops, Logic Gates and other combinational digital circuits. Similarly, a Flip-Flop can be built by using a combination of Logic Gates and… |
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Simple Wireless Power Transmission Circuit to Glow an LED The Wireless Electricity Transfer concept is not new. It was first demonstrated by Nikola Tesla in the year 1890. Nikola Tesla introduced electrodynamics induction or resonant inductive coupling by lighting up three light bulbs from the distance of 60 feet from the power source. We have also built a Mini Tesla Coil to transfer the energy. Wireless… |
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Bipolar Transistors with Smaller Form Factor (3.3mm X 3.3mm) and Increased Power Density Diodes Incorporated extends its transistor family with release of NPN and PNP power bipolar transistors in a much smaller form factor of 3.3mm X 3.3mm. The transistors enable higher power density designs in gate-driving power MOSFET’s and IGBTs, Linear DC-DC step-down regulators, PNP LDOs and load switch circuits which helps in applications which require 100V and 3A… |
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Missing Pulse Detector Circuit When a signal goes through a sudden change from base value to higher value and again comes to base value from higher value after some time. It is called a Pulse signal. In above image, the first waveform shows a single pulse where the signal is changing from 0 to 5v (low to high) and 5v to 0 (high to low) within a short… |
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Short-Circuit Protection Circuit Short circuit protection is an unintended connection between two terminals which are supplying power to the load. It can happen both in an AC and a DC circuit. If it is an AC supply, then a short circuit can trip the power supply of the whole area, but there are fuses and overload protection circuits at many levels, from the power station to the house. And if it is a DC… |
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Push-Pull Amplifier Circuit Circuit schematics are crucial for electronics engineers to understand. For the majority of real-world applications, Class A amplifiers offer the lowest distortion, Class B amplifiers the most efficiency, and Class AB amplifiers the best resolution. The particular needs for power, distortion, and efficiency will determine the choice. A push-pull… |
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Voltage Regulator Circuits Voltage Regulator, as the name suggests, is a circuit that is used to regulate the voltage. Regulated voltage is a smooth supply of voltage, free from any noise or disturbance. The output from the voltage regulator is independent of load current, temperature, and AC line variation. Engineers can create reliable power supply systems with the aid of these voltage… |
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Simple Keyhole Lighting Device Circuit Sometimes when we reach home in the night it’s hard to unlock the door lock, as we are not able to find the keyhole because of darkness. So, to get rid of this problem there are many keyhole lighting devices are available in the market. But we can also make one easily, using LDR. Here, we are going to control the key-hole light automatically based on the darkness outside,… |
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Darlington Transistor Pair Darlington transistor is invented in 1953, by a US electrical engineer and inventor, Sidney Darlington. Darlington transistor uses two standard BJT (Bi-polar junction transistor) transistors which are connected together. Darlington transistor connected in a configuration where one of transistor’s emitter provides biased current to the other transistor’s base. … |
