Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What is a PNP Transistor?PNP Transistor DefinitionA PNP transistor is defined as a bipolar junction transistor with an N-type semiconductor sandwiched between two P-type semiconductors. Symbol of PNP TransistorThe symbol includes an arrow on the Emitter showing the direction of conventional current flow. Current Flow DirectionIn a PNP transistor, the current flows from the Emitter to the Collector.Working PrincipleThe positive terminal of a voltage source (VEB) is connected with Emitter (P-type)

What is a Darlington Transistor?Darlington Transistor DefinitionA Darlington transistor is a semiconductor device that pairs two BJTs to achieve a very high current gain, functioning as a unified component.Darlington Transistor CircuitThe Darlington Transistor consists of two PNP transistors or NPN transistors connected back to back. It is a single package with a common collector terminal for both transistors.The Emitter terminal of the first transistor is connected with the base terminal of the

What is a Power Transistor?Power Transistor definitionThe utility model relates to a bipolar junction transistor that can withstand high voltage and high currentPower Transistor structure composition Three-layer semiconductor Two PN junctionsHow Power Transistor workIn power electronics technology, GTR mainly works in the on-off state. GTR usually operates at positive bias (Ib>0) with large current conduction; Reverse bias (Ib<0) is in the cutoff state. Therefore, a sufficiently large puls

With the increasing demand for transparent/flexible displays, healthcare sensors, and robotics, there is a need to advance the development of thin-film transistors (TFTs) manufacturing and large-scale circuits. This paper has proposed an IGZO-TFT-PDK to aid the educators and research community to explore the circuit design space of dual-gate IGZO-TFT devices. To solve the tensile force-induced current variation problem in IGZO-TFT devices, an omni-directional device and its layout template with

This paper reviews and analyses the design of popular radio frequency energy harvesting systems and proposes a method to qualitatively and quantitatively analyze their circuit architectures using new square-wave approximation method. This approach helps in simplifying design analysis. Using this analysis, we can establish no load output voltage characteristics, upper limit on rectifier efficiency, and maximum power characteristics of a rectifier. This paper will help guide the design of RF energ