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Over Current Cut-off Power Supply Using Arduino

In this post we are going 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. By Girish Radhakrishanan Main Technical Features The proposed over current cut-off power supply circuit using Arduino has 16 X 2 LCD display, … Read moreOver Current Cut-off Power Supply Using Arduino

Electronic Engine Speed Governor Circuit

The post discusses an electronic engine speed governor or controller circuit using an RPM feedback signal loop through a hall effect sensor network. The idea was requested by Mr. Imsa Naga. Circuit Objectives and Requirements Thank you very much for your time. I believe this circuit would be suitable for a single phase supply. My … Read moreElectronic Engine Speed Governor Circuit

Testing Alternator Current using Dummy Load

The post explains a method of checking or verifying alternator maximum current delivering capacity using a shunt regulator as the dummy load and an ammeter. The idea was inquired by Mr. Joe. Circuit Question I need help designing an electronic dummy load that can handle high enough power from motorcycle alternator. I need to know … Read moreTesting Alternator Current using Dummy Load

How to Protect Motor from Over Current using a Single Opamp

The post analyzes an automatic motor current overload controller circuit design. The idea was requested by Mr. Ali. Technical Specifications  I need some help to complete my project . This is a simple 12 volt motor that needs to be protected when it goes to overload. The data is shown and can help to design … Read moreHow to Protect Motor from Over Current using a Single Opamp

Lathe Machine Over Load Protector Circuit

The article discusses a simple overload cut off circuit for safeguarding heavy mains operated machines such as a lathe machine. The idea was requested by Mr. Howard Dean. Technical Specifications May I first say I have very little knowledge of electronics although I could follow a simple diagram. I operate a small Chinese lathe for … Read moreLathe Machine Over Load Protector Circuit

Mains AC Overload protection Circuit for Voltage Stabilizers

In this article we discuss how to make a cheap yet effective mains operated AC overload and over-current protector circuit using very ordinary discrete components. Introduction I have published a few mains voltage stabilizer circuits in this blog, these units are designed and intended for safeguarding the connected appliances at their outputs. However these equipment … Read moreMains AC Overload protection Circuit for Voltage Stabilizers

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