Electronics

How to make your own relay module

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What is a relay? A relay in an electromagnetic device that is activated by a low voltage ranging from 3-12 v. When the electromagnet is activated it pulls a contact to make or break high voltage circuit. A simple relay looks like  following:     A sample relay module: Note that the above circuit is […]

Electronics

Electrical Appliance Protection

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Electrical Appliance Protection

This simple circuit of electrical appliance protection  is to protect your electrical appliance during irregular power supply. Normally when power goes off we forget switching off our appliances. Especially in India where power cuts are very frequent we tend to leave our appliances on. In such case there are very high chance of getting it damages […]