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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

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

Low Battery and Overload Protection Circuit for Inverters

A very simple low battery cut-off and overload protection circuit has been explained here. The figure shows a very simple circuit set up which performs the function of an overload sensor and also as an under voltage detector. In both the cases the circuit trips the relay for protecting the output under the above conditions. … Read moreLow Battery and Overload Protection Circuit for Inverters

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