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IR2111 H-Bridge Inverter Circuit with Soft Start

Last Updated on September 14, 2025 by Swagatam 4 Comments

Here we see this circuit diagram which is full H-Bridge using 4 power MOSFETs and 2 IR2111 high side driver ICs. That means this circuit is for making full bridge inverter which converts DC into AC. Power Supply Part We have +600V DC at top rail, written as +600V max. And ground (0V) at bottom. […]

Filed Under: Inverter Circuits Tagged With: Bridge, Inverter, IR2111, Soft, Start

Soft-Start Power Supply for Amplifier Loudspeakers

Last Updated on May 5, 2022 by Swagatam 9 Comments

amp power supply slow start

The proposed slow-start power supply circuit is specially designed for power amplifiers to ensure that the loudspeaker connected with the amplifier do not generate the loud and unwanted “thump” sound during power switch ON. This also implies that the power supply will safeguard or protect the loudspeaker from the sudden inrush current transient from the […]

Filed Under: Power Supply Circuits Tagged With: Amplifier, Loudspeakers, Power, Soft, Start, Supply

Motorcycle Button Start Locking Circuit

Last Updated on May 16, 2026 by Swagatam 4 Comments

speed2Blimit

In this post I have explained how to modify an existing button start system in motorcycles so that it’s disabled as soon as the engine has started and gained the required minimum amount of RPM. The idea was requested by Mr. Jordan Circuit Requirements I just discovered your splendid site/blog with focus on education about […]

Filed Under: Automobile Electronics Tagged With: Button, Locking, Motorcycle, Start

Submersible Pump Start/Stop Circuit

Last Updated on November 24, 2019 by Swagatam 103 Comments

borewell 3

In this post I have explained an automatic submersible pump start, stop circuit with dry run protection in order to implement an automatic ON/OFF switching of the motor in response to the high/low water levels of the overhead tank. Circuit Concept In one of the previous posts I have explained a similar concept which also […]

Filed Under: Water Controller Tagged With: Pump, Start, Stop, Submersible

PWM Motor Soft Start Circuit to Prevent High Consumption during Power Switch ON

Last Updated on June 30, 2026 by Swagatam 224 Comments

triacpwmdriver

In this post I have explained an effective PWM motor soft start circuit which can be used for enabling heavy motors with a soft start and thus prevent the equipment from drawing dangerous high currents. Why a Soft Start High wattage motors such pump motors or other forms of heavy industrial motors tend to draw […]

Filed Under: Motor Controller Tagged With: High, Motor, Prevent, PWM, Soft, Start

Oil Burner Button Start Ignition Circuit

Last Updated on May 16, 2026 by Swagatam 9 Comments

oilburnercontrollercircuit

In this post I have explained a simple automatic ignition for an oil burner system system which is initiated with a push button operation. The idea was requested by Mr. Andreas. Technical Specifications I have a request and i wonder if its possible for someone to find a simple circuit about oil burner controller. I’m […]

Filed Under: Automobile Electronics Tagged With: Burner, Button, Ignition, Start

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