Wednesday, July 11, 2018


How does an inverter work

              An inverter converts DC power supply to an AC power supply with the help of an electronic circuit. An inverter can be used as a backup power supply to use while a power failure happens, Inverter charges a battery using ac mains and stores electricity in the form of DC voltage. When a power failure occurs the inverter converts the stored DC voltage into AC voltage to power up your electric circuits.

              An inverter continuously switches on and off the dc power passing through transformers primary winding and produces desired high voltage in the output of secondary winding, The transformer used here is a step up transformer. (normally 12v to 110v/230v)
 An oscillator circuit produces sine wave (50hz or 60hz depending on the country standards.) 
and fed to the switching circuit connected to the primary winding of the transformer. When the sine wave passes through the circuit it switches on, off and changes the polarity of the 12v battery supply to the primary winding of the transformer and induced a high voltage in the secondary.

              Before you buy an inverter you have to calculate the load in watts which will be connected to it. If you buy an inverter having a capacity of 1000watts you can use the only 800watt at a time.
The backup time you get is depending upon the inverter battery capacity (Ah) and connected load.

Check the battery electrolyte level at regular intervals

Thursday, July 5, 2018


Amazone Echo

Amazone Echo is a smart speaker controlled with your voice (hands-free). It connects with ALEXA a cloud-based voice service with the help of the internet,  It plays music, make calls, check weather and news, set alarms control smart home devices and much more.

Echo can connect to your phone via Bluetooth and play music from your phone and also be connected to your Bluetooth speaker 

Echo have powerful speakers and gives omnidirectional audio. 

Echo has seven microphones inbuilt and can be heard from any direction. 

Echo can hear your voice even in the noisy environments or while playing music.

You can download Alexa software to connect it to your phone which is available for Android and iOS 

With Alexa, You can tell to play a specific  music from the internet

                  You can ask about the weather.

                  You can ask questions and Alexa will answer.

                  You can Check sports scores,

                  You can set alarms and reminders,

                  You can call and Message,

                  You can control lights fans and much more,

                  You can order food from zomato,

                  You can request a ride from ola,

                  You can book a carpenter from urbanclap.

                              All done with your voice

                         ------------------ And much much more--------------------

Saturday, June 30, 2018

Bluetooth audio receiver

Bluetooth Audio Receiver

What is Bluetooth audio receiver?

            With the use of a Bluetooth audio receiver, you can turn a non-Bluetooth amplifier, car stereo, home theatre etc into Bluetooth audio receiver. you can enjoy hi-fi music from the amplifier, car stereo, home theatre etc while playing on your mobile phone wirelessly. the Bluetooth audio receiver device is connected using  3.5mm or 2.5mm jack input port. This is ideal for home or vehicle music streaming. This device can also be used  for hands-free calling, it has an inbuilt microphone

        This device is battery operated and can be charged with USB cable, with 2 hours of charging you can use this device for around 5 hours.

Bluetooth audio receiver
Bluetooth audio receiver

Thursday, June 28, 2018

Air fryer

Air fryer

What is air fryer

Air fryer cook by circulating hot air around the food using the convection mechanism
We can bake, cook potatoes, fish, meat, french fries and a lot more with air fryer. No need to use oil to cook, if add little amount of oil before cooking gives crunchiness, The main advantage of air fryer is only a little or no oil is required means less fat. Air fried food tastes same as deep fried. 
Here you can read more about using Air fryer.
Philips Airfyer HD9630 90
Air fryer
By Tplax15 [CC BY-SA 4.0 ], from Wikimedia Commons

Air fryer

Frying with air fryer is healthy because of less fat, but eating fried food daily is not so healthy.

Sunday, June 24, 2018

Automatic Water Level Controller

Automatic water level controller

          In our busy lives sometimes we forget or not getting enough time for simple and important things like checking and filling overhead water tanks. most of the people should have experienced water problems when getting ready for office or school. 

           There are cheap and efficient electronic devices available in the market to control your pump automatically, Only you need to install the device and forget it. It will take care of your water problems.
  • This device switch on your pump when the water level goes down.
  •  switch off when the tank is full.
  • It protects the motor from dry run.
  • It switches off the pump when the water level goes down in the underground tank or well.


water level controller
water level controller