Batteries. Needed for just about every electronic project, electronics revolve around them. But think about it, What happens once they lose their power?We throw them aside. These batteries are building up in our landfills, so I set myself to find out how to reuse them.
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DIY - Make Your Own Rechargeable Battery
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Rechargeable Battery Circuit
http://www.instructables.com –
The idea came to me when i was ready to replace a battery cell in my alarm clock next to my bed. Even i am using the last 5 years only rechargeable batteries of the most types i considered how many battery cells people around the world throw away in a simple move like that i did now
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Battery Monitor Circuit
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here we have developed this battery monitor circuit to test the battery charging status. In this circuit we can easily test batteries by connecting it with the circuit. Here some LEDs are used for showing battery status.
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UNDERSTANDING CURRENT, VOLTAGE AND POWER
http://www.smps.us –
The purpose of electronic circuits is to control the flow of electric currents. This may sound like a silly question, but why do we need to control the currents? Well, it has been found experimentally that the intensity of various electrical effects is related to the amount of the charge Q that passes by a certain region per unit time.
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How to design power supply circuit
http://www.homemade-circuits.com –
Whether it's an electronic noob or an expert engineer, all require this indispensable piece of equipment called the power supply unit. This is because no electronics can run without power, to be precise a low voltage DC power, and a power supply unit is a device which is specifically meant for fulfilling this purpose.
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Burglur Alarm Circuit
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Burglar alarm system is an important part of home security systems. This burglar alarm project is based on PIR sensor, UM3561 and Speaker. PIR sensor used to detect body motion and UM3561 & speaker to produce Police siren after any movement detection.
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Interlocked Monostable Timers
http://home.cogeco.ca –
This is done by connecting the OUTPUT of each timer to the TRIGGER of the other through a diode and placing a resistor in the trigger circuit. The resistor limits the current from the opposite timers output when the trigger is closed on the stopped timer.
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IR Remote Tester Circuit
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We are very much familiar with our television sets, DVDs, MP3 players, music systems and many other device that are controlled by using IR Remote. There are many types of remote controls available for different devices but most of them work on around 38KHz Frequency signal.
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Simple Audio Amplifier Circuit using 555 Timer IC
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555 time IC is very powerful and versatile IC, it can be used in many forms. In this tutorial we are going to see how a 555 IC can be used as Audio Amplifier. A low power audio signal can be amplified using 555 Timer IC.
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8 LED Color Oscillator
https://www.circuitlab.com –
Blue - negative, ground Red - positive, Vcc Brown - 74163 pin 11 (Output A) Green - 74163 pin 12 (Output B) Magenta - 74163 pin 13 (Output C) Gray - inverter output
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