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Voltage Control and Protection

Parallel MOSFET Calculator Tool: How to Connect MOSFETs in Parallel Safely

Last Updated on May 27, 2026 by Swagatam Leave a Comment

upgrade inverter power by adding mosfets in parallel

The following calculator tool can be used to correctly calculate all the parameters essential for connecting many number of MOSFETs in parallel. This ensures the current handling by the MOSFETs is implemented optimally, without any issues or technical errors, and keeps the MOSFETs safe for long term operations. MOSFET Parallel Calculator Total Load Current (Amps) […]

Filed Under: Inverter Circuits, Voltage Control and Protection Tagged With: Connected, High, Many, MOSFETs, Need, Parallel

Calculator to Design a High Power 3kW PFC (Power Factor Correction) Circuit

Last Updated on May 21, 2026 by Swagatam 2 Comments

In this post I will explain how to use this active PFC calculator for calculating high current, high PFC designs. In our example we will be using 230 VAC input and 3 kW output and Vout equal to around 390 V, and we will try to see how each resistor and capacitor gets calculated in […]

Filed Under: Grid and 3-Phase, Power Supply Circuits, SMPS and Converters, Voltage Control and Protection Tagged With: 3KW, Calculator, Design, High, PFC, Power

AMS1117 1A LDO Voltage Regulator IC – 3.3V, 1.8V, 2.5V, 5V Regulators

Last Updated on May 18, 2026 by Swagatam 1 Comment

In this post I will be talking about one famous voltage regulator IC called AMS1117. It is a 1 Amp Low Dropout (LDO) Linear Voltage Regulator and we can get it in both fixed output types and also adjustable output version. It is super small, easy to use and available in SOT-223 package mostly, which […]

Filed Under: Datasheets and Components, Voltage Control and Protection Tagged With: AMS1117, LDO, Regulator, Regulators, Voltage

Make this Single MOSFET Solid-State Relay SSR circuit

Last Updated on April 15, 2026 by Swagatam 2 Comments

This single MOSFET solid-state relay SSR circuit is a very simple where you can drive an AC load like a lamp, motor, or any oter AC load, through a small DC control voltage. We use only one IRF840 MOSFET to switch the 220V AC load, and we do this with some clever diode bridge arrangement, […]

Filed Under: Voltage Control and Protection Tagged With: MOSFET, Relay, Single, Solid, SSR, State

Passive Power Factor Correction (PFC) Calculator

Last Updated on April 15, 2026 by Swagatam Leave a Comment

This passive PFC calculator does not use any MOSFET or PWM or switching frequency. It only uses 50 Hz mains and it only works with inductors and capacitors, so the only thing that matters is the reactance of the inductor and the reactance of the capacitor at the mains frequency. That is why the calculator […]

Filed Under: Voltage Control and Protection Tagged With: Calculator, Correction, Factor, PFC, Power

How to Use IC LM393 as a Current Controller Circuit

Last Updated on April 15, 2026 by Swagatam Leave a Comment

In this post we will understand a current controller and current limiter circuit using the IC LM393 comparator. This circuit is using a low power voltage comparator integrated circuit LM393 and one power Metal Oxide Semiconductor Field Effect Transistor, so the idea is simple but the working looks a little deep when we see it […]

Filed Under: Sensors and Detectors, Voltage Control and Protection Tagged With: Controller, Current, LM393

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