circuite solare

8/7/2019 circuite solare

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Direct circuit i.e. direct circuit using the sunlightto run some device:

If you

want to use this solar panel directly for producing electricity then connect the loadwith the terminals of the solar panel. You can run small motors like the motor of the

CD player or small bulbs like high power (50 to 90 mA) blue led. If you conne ct light of greater power then it may be damaged by this amount of current. If you place

that circuit near some lamp or in sunlight, it will immediately start working.

This direct usage will not store the energy. Small interruptions in sunlight withsuspend the system. This may lead to the blinking of the load connected to this typeof direct circuit.



Direct device interrupted with resistance:

For working of solar circuit without interruption, superconductors may be adjustedwithin the circuit. It will provide current during small interruptions. Capacitors should

be added in series if more than one capacitor is needed as to match correct energy

out put.

One path of current is complete; this type circuit will take 30 seconds to one minuteto get it started. This will work for 0ne or two minutes even when the sunlight is not

available. This is quite effective for the light applications.



Addition of battery will make the solar circuit towork in dark:

Addition of capacitor will only make the circuit to work with interruption in sunlight

and it will not provide adequate energy storage. If you attach a rechargeable battery(like NiMH rechargeable battery) then this type of circuit will not only provide

electricity in the presence of light but also in the dark. This type of solar circuit will



charge the battery which will provide the electricity in absence of light.

One important thing is to keep in mind that the battery will not only take up

electricity but also transfer some part of acquired electricity back to solar panel. It is

advisable to connect a reverse diode in between the two. By doing this you can save

50mA of electricity going back to solar pa nel. NiMH batteries and sealed lead-acid

batteries are most suitable batteries for such type of unmonitored system. The

charging should be kept below 130mA.



Dark detector LED driver Circuit:

The dark sensor is device is very easy to incorporate in your so lar circuits. By the

help of this your solar circuit will automatically sense the dark and it can also be used



as infrared phototransistor.

PNP transistor can be used to perform switching and it is controlled by the output

voltage of the solar panel. In this circuit yellow LED can be connected which will turn

on in dark as the transistor will allow current to flow through it. The panels outpu t is

high in the sunny environment which will turn off the transistor. Red or yellow LED

can be driven by this type of solar circuit. This circuit does not have sufficient voltage

which is required to drive blue or white LED.

Solar circuit for garden:



By adding Joule Thief voltage in the above type of circuit, the design of the solar

circuit can be improved and it can be used in solar garden lights. This circuit needs

to be enclosed in very tough and water resistant casing.

AVR Microcontroller:

The voltage used in light detector can be used in more effective device like AVR

microcontroller. This is a very efficient and low current device. This device wil l savethe power by controlling the running of LED all the time. Joule Thief style of booster

can be driven by microcontroller which can run white LED.

This type of circuit can be used to run two red LED outputs. Many funky lanterns can

be made lit with the help of such solar circuits.

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