An efficient solid state single pole double throw or SPDT switch can be built using triacs for replacing a mechanical SPDT. The post details a simple solid state triac SPDT […]
Search Results for: spdt relay
SPDT Solid State DC Relay Circuit using MOSFET
In this post we’ll study a simple high current mosfet based SPDT DC relay, which can be used in place conventional bulky SPDT mechanical relays. The idea was requested by […]
7 Automatic Street Light Circuits [Using Relays and Solar Panel]
In this article we will discuss 7 useful yet simple automatic street light circuits using 220 V relays and solar panel. All the presented circuits can be used for automatically […]
How a Relay Works – How to Connect N/O, N/C Pins
An electrical relay consists of a electromagnet and a spring loaded changeover contacts. When the electromagnet is switched ON/OFF with a DC supply, the spring loaded mechanism is corresponding pulled […]
5 Best 6V 4Ah Automatic Battery Charger Circuits Using Relay and MOSFET
The following 5 versions of 6 volt 4 AH battery charger circuits has been designed by me and posted here in response to the request from Mr. Raja, let’s learn […]
Whistle Activated Switch Circuit
In this post we will learn how to build a simple whistle sound operated relay circuit, which can be used for switching ON/OFF a 220 V load through whistle sounds. […]