In this project, I have explained how to control motor speed using Arduino PWM circuit, and how to implement reverse forward or direction control in a DC motor using Arduino through a couple of push button switches. Any high current motor upto 30 amp can be controlled using this set up. Introduction Motor is a […]
Current
Over Current Cut-off Power Supply Using Arduino
In this post I will show how to construct a battery eliminator / DC variable power supply which will automatically cut-off the supply, if the current flow through the load exceeds the preset threshold level. Main Technical Features The proposed over current cut-off power supply circuit using Arduino has 16 X 2 LCD display, which is […]
How to Use IC LM393 as a Current Controller Circuit
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 […]
Transformerless Current-Controlled LED Bulb Circuits you can Build at Home
In this post I have elaborately explained how to build simple transformerless LED bulb circuits using many LEDs in series and powering them through current controlled capacitive power supply circuit. Warning: Circuits I have explained below are not isolated from mains AC, and therefore are extremely dangerous to touch in the powered and open condition. […]
How to Sense Current Using Op-Amp: Low Side and High Side Circuits Explained
In this post we are going to learn one very interesting and also very much useful topic that is how we can measure the current which is going through any load by just using some normal resistors and one op amp circuit. We know already that current is one very important thing in every electrical […]
High Current Li-Ion Battery Charger Circuit
In this post I have explained a high current Li-Ion battery charger circuit which can be used for charging any high current, such as 2S3P, 3S2P battery packs. It can be also used for charging other similar high Ah rated Li-ion battery from a car or a truck battery. The idea was requested by Mr. […]