MPSA92 BJT is another component I have salvaged from my old ATX power supply circuit. Other components used are PC817 optocoupler , 2SC13001 , TL431 adjustable voltage regulator , 2SC1815 small signal BJT transistor and SBL3040PT schottky ba…
C945 BJT is another component I have salvaged from my old ATX power supply circuit. Other components used are PC817 optocoupler , 2SC13001 , TL431 adjustable voltage regulator , 2SC1815 small signal BJT transistor and SBL3040PT schottky barrie…
I have been learning power supply circuits used in various application. I think that learning power supply is crucial because this is required in any electronics circuits. I had many older PC ATX PSU(Power Supply Unit) and so I studied it and took c…
The C1815, also commonly marked as 2SC1815, is a small signal NPN bipolar junction transistor made in Japan originally by Toshiba. It is not a power transistor like the 13001 but rather a general-purpose device used in low-current, low-noise amplifi…
I salvaged many components from older PC ATX SMPS(Switched Mode Power Supply). One of the component I salvaged is the MJE13001 or 2SC13001 transistor among othes like SBL3040 diode, PC817 optocoupler , LM358N op-amp , LM339N op-amp, TL494 (KA750…
I have written about how one can use the TL431 IC to build adjustable voltage regulator. Now another application usage of TL431 is constant current source and sink circuit. TL431 is adjustable zener diode and perhaps you know that zener diode are o…
I wrote a about a simple shunt voltage regulator design with TL431 but circuit is usually not recommended for moderate to high current application or battery powered circuits. In the shunt mode, the TL431 will draw current from the source even if t…
After reading through power supply circuit diagram, I have found that TL494 IC is used in the circuit and wanted to write a note about it. So what is TL494 IC used in ATX power supply unit. The TL494 is a classic PWM (Pulse Width Modulation) contro…
The H-bridge operation of Inverter is what I am writing about in this note. H-bridge are used for driving motors in both the direction and in case of Inverters, H-bridge is used to control the energy flow through the transformer primary such that si…
I have been learning power supply theory and looking various kinds of circuits which can be used in various electronics circuit designs like powering Arduino or ESP32 based wifi controlled RC car or diy drones. I think I started looking into power …
Using an external pass transistor with a voltage regulator like the 78XX series allows you to safely boost its current output beyond its internal limit. Using an external pass transistor with a 78XX regulator reduces the heating of the regulator i…
There are various ways to design Buck Converter and one of them is to used high efficiency buck converter IC. The ADP2300 and ADP2301 are high-efficiency, fixed-frequency step-down (buck converter) regulators with integrated power switches, ideal f…
The ADP1612 is a step-up DC-to-DC switching regulator (also called a boost converter ) manufactured by Analog Devices . It is designed to convert a lower input voltage to a higher output voltage efficiently. A typical step-up (boost) regulator c…
I have come across an IC that is used in diy Arduino Inverter and this IC is called MC34063 and I wanted to know what this IC is and where it is typically used. So this is note on this IC. The MC34063 is a DC-DC converter IC that can be configure…
The TP4056 1A 18650 lithium‑ion battery charger module is an ultra‑popular, compact charging board commonly used for DIY electronics projects(see DIY +5V Regulated Power Supply ). Here's a breakdown of its components and functionality: ⚡ 1. C…
