How to use LM317T?
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I have a robot on wheels that uses 7.2v battery. The battery runs it for good amount of time it is a 2000mah nimh vex battery. I want to supplement and charge it during peak hours. I bought 4 solar panel that can produce 2 V near my window and 3 volts outside. They produce 200mah at full sun. I want to series the solar panel up and have voltage regulator that can regulate it. I was told that the current also needs to be constant and so I ordered a LM317T here(http://www.componentschip.com/details/Texas-Instruments/LM317T.html) . How does the lm317t react when my solar panel hit shade and current goes under 200mah. What voltage should I put on my voltage regulator that I will connect to LM317T. Should I make it 10 V or 9 V? I really am new to this and want to use solar energy to charge my battery while it is connected to my robot in parallel. What current should be held constant to charge 7.2v 2000mah nimh?
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I have a robot on wheels that uses 7.2v battery. The battery runs it for good amount of time it is a 2000mah nimh vex battery. I want to supplement and charge it during peak hours. I bought 4 solar panel that can produce 2 V near my window and 3 volts outside. They produce 200mah at full sun. I want to series the solar panel up and have voltage regulator that can regulate it. I was told that the current also needs to be constant and so I ordered a LM317T here(http://www.componentschip.com/details/Texas-Instruments/LM317T.html) . How does the lm317t react when my solar panel hit shade and current goes under 200mah. What voltage should I put on my voltage regulator that I will connect to LM317T. Should I make it 10 V or 9 V? I really am new to this and want to use solar energy to charge my battery while it is connected to my robot in parallel. What current should be held constant to charge 7.2v 2000mah nimh?
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I have a robot on wheels that uses 7.2v battery. The battery runs it for good amount of time it is a 2000mah nimh vex battery. I want to supplement and charge it during peak hours. I bought 4 solar panel that can produce 2 V near my window and 3 volts outside. They produce 200mah at full sun. I want to series the solar panel up and have voltage regulator that can regulate it. I was told that the current also needs to be constant and so I ordered a LM317T here(http://www.componentschip.com/details/Texas-Instruments/LM317T.html) . How does the lm317t react when my solar panel hit shade and current goes under 200mah. What voltage should I put on my voltage regulator that I will connect to LM317T. Should I make it 10 V or 9 V? I really am new to this and want to use solar energy to charge my battery while it is connected to my robot in parallel. What current should be held constant to charge 7.2v 2000mah nimh?
Not really a question for a programming site but as it's in my area. You configure the LM317T as a current source you can neglect the voltage totally. There is a formula for trickle charge rate of NiMh an online calculator is here Rechargeable battery charging time and mA current calculator | Convert to units and culinary measures.[^] For a 2000maH stack maximum trickle charge rate is 66mA which is well within range of your solar panels. You can't charge any faster using a simple LM317T circuit otherwise you will damage the batteries. Finally the circuit is shown here (second one with the solar panels) Ni-Cad Battery Charger with LM317 - Jose Pino's Projects and Tidbits.[^] The 22 Ohms on the circuit will give you 56mA of trickle charge .. if you want exact max 66mA you need 19 Ohm 1/2 Watt resistor. The diode protect (1N4001) protects the solar panels when they aren't in sunlight You want a more advanced charger go to a proper electronics hobby site and not here :-)
In vino veritas
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Not really a question for a programming site but as it's in my area. You configure the LM317T as a current source you can neglect the voltage totally. There is a formula for trickle charge rate of NiMh an online calculator is here Rechargeable battery charging time and mA current calculator | Convert to units and culinary measures.[^] For a 2000maH stack maximum trickle charge rate is 66mA which is well within range of your solar panels. You can't charge any faster using a simple LM317T circuit otherwise you will damage the batteries. Finally the circuit is shown here (second one with the solar panels) Ni-Cad Battery Charger with LM317 - Jose Pino's Projects and Tidbits.[^] The 22 Ohms on the circuit will give you 56mA of trickle charge .. if you want exact max 66mA you need 19 Ohm 1/2 Watt resistor. The diode protect (1N4001) protects the solar panels when they aren't in sunlight You want a more advanced charger go to a proper electronics hobby site and not here :-)
In vino veritas
It is site driving spam. The text has been copied from a 2014 StackExchange post and extended with a link to the distributor.
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It is site driving spam. The text has been copied from a 2014 StackExchange post and extended with a link to the distributor.
Haha I get it now .. will ignore in future.
In vino veritas