Maintain idling car battery in fully charged condition

It is essential to maintain car battery in full charging condition lying idle for long periods. It often so happens that while the car is attempted for a start it fails to do so. Usually battery capacity falls in unused cars for some small gadgets like remote etc still drawing little power besides bit self discharge of the inherent features of lead acid batteries traditionally fixed in cars. Submitted below a very few low cost DIY tickle charger, as commercial ones are quite expensive. Option1&2 as explained below= Rs 400/-(excluding the power bank ). Option 3= Rs 300/- If your car is parked outdoors with some little chance of sunlight ( even shaded)  falling on the car, then the best option is to use any available  solar cell phone  power bank of around 10,000mAH  along with procured a dc to…

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Get a Split Inverter AC for free

Recover the cost of a new split ¬†Inverter AC by discarding your old Window AC. Read below how to achieve it. Split Inverter AC consumes much less power compared to the old generation on/off compressor type. The Inverter technology is the latest state of the art technology that governs the operation of all the electrical motors including the compressors in an AC. The Inverter AC units have a variable-frequency drive (VFD)  that controls the speed of the motors by changing the frequency. Our utility frequency of 50 or 60 Hz can not be changed as they are fixed at the generating station. Therefore incoming utility AC supply is converted to DC and then to AC again through an inverter producing voltage of desired frequency. This Inverter power is used to control the speed of the compressor motor and the blower…

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Very low-cost Robotic tool -The Servo Tester.

It is a very low-cost device at less than Rs 200/- absolutely required for testing small servo motors. It is. a must device for hobby robotics. It is basically to both test and ensures the center position ( at 90 degrees) of a (non-continuous spinning only ) small Servo Motor which is very important for robotic applications as, the unit that is procured from the market, its shaft may not be in the center position. Thus if used without fixing its shaft position in the center, for any robotic application, say a humanoid biped, hexapod, pick and place, gripper, claw, etc during assembling,  then it gives erratic operation at the time of switch on even if the programming is correct. 90-degree position of the shaft is the center position where from the non-continuous servo shaft moves exactly – 90 degrees…

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