In this post I have explained a 200 + 200 watt wireless home theater circuit using a class D amplifier and a Bluetooth headset as the wireless module. The idea was requested by Mr. Sudipta Mandal. Technical Specifications I want to make my home theater wireless. My home theater model is Sony SRS-D9 2.1 channel. […]
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Making a Wireless Doorbell Circuit
Today the traditional wired type of doorbells are gradually getting obsolete and are being replaced by the advanced wireless type of doorbells that are easier to install due to their hassle free set-ups. A simple wireless doorbell circuit is discussed in the following post which can be constructed at home. Written and Submitted By: Mantra […]
Adjustable 0-100V 50 Amp SMPS Circuit
The high power adjustable switching power supply is perfect for the purpose of laboratory work. The topology used to design the system is switching topology – half controlled bridge. Written and Submitted by: Dhrubajyoti Biswas Warning: The following circuit design works with a direct 220 V Mains AC without any isolation at the input side, […]
Key Finder or Pet Tracker Circuit
Pets and kids (under 4) have one thing in common, they are curious by nature and love venturing into unknown zones ending up in some sort of mess or trouble. Pet or kid tracker equipment which are quite similar to a key finder circuit were specifically designed for solving this issue, here I have explained […]
Simple Walkie Talkie Circuit
In this article I have explained a simple walkie talkie circuit that can be easily built by any hobbyist and used for communicating between rooms or floors or simply for having some fun across neighbors and friends. The range of this system is around 30 meters. A walkie-talkie, also commonly referred to as handheld transceiver is […]
Remote Controlled Wireless Water Level Controller Circuit
For multi-storey buildings where water tanks could be at considerable heights over building terraces, monitoring the levels automatically could become a major issue. RF remote control modules have become pretty cheap nowadays which could be effectively used for solving the inconvenience. I have explained how to make and install a wireless water level controller circuit […]