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  • Author Author: tariq.ahmad
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Inductor Project: Battery Juicer -- The Learning Circuit 39

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Inductor Project: Battery Juicer

The Learning Circuit | element14 presents |  Project Videos

 

Learn how to get more bang from your battery by using an inductor to make a battery juicer that can run a flashlight off a single, used battery.

 

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Bill of Material:

 

Part

Bipolar (BJT) Single Transistor

Multicomp1Buy NowBuy Now

Cylindrical Core Ferrite, 7.5 mm long, 19 mm ID, 29 mm OD

Fair-rite1Buy NowBuy Now
Prototype BoardMulticomp1Buy NowBuy Now
Slide Switch, SPDT, Through HoleALCOSWITCH - TE CONNECTIVITY1Buy NowBuy Now
Hook Up Wire, Black, 22 AWG, 25 ft, solidNTE ELECTRONICS1Buy NowBuy Now
Hook Up Wire, Red, 22 AWG, 25 ft, solidNTE ELECTRONICS1Buy NowBuy Now
1K ohm resistor, 1/2WNTE ELECTRONICS1Buy NowBuy Now
Battery Holder, AA x 1, Wire LeadsKeystone1Buy NowBuy Now

 

Additional Parts:

 

Product NameQuantity

Single LED Flashlight

1

 



Parents

  • Hi Karen,

     

    I have been experimenting with the circuit and I found that the 2N2222 will allow the battery to be drained down to about 0.6 Volts. If on the other hand you use a Germanium NPN transistor the circuit will continue to drain the battery all the way down to 0.2 volts before it stops working. If we are going to Juice the battery we might as well drain it as low as possible.

     

    John

Comment

  • Hi Karen,

     

    I have been experimenting with the circuit and I found that the 2N2222 will allow the battery to be drained down to about 0.6 Volts. If on the other hand you use a Germanium NPN transistor the circuit will continue to drain the battery all the way down to 0.2 volts before it stops working. If we are going to Juice the battery we might as well drain it as low as possible.

     

    John

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