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  1. #1
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    negative voltage supply

    hi, i only got DC adapter and 78L12 and 78L05 ... how could i get a -12V and -5V from the components above? Any other circuit recommended which provide -12V and -5V from positive DC voltage source? I need it in urgent... Project due soon


    Thanks a lots

    •   Alt22nd March 2006, 20:04

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  2. #2
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    how to get negative voltage




    •   Alt22nd March 2006, 20:55

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  3. #3
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    negative dc voltage

    Do you mean that you need both +,- 12V and +,- 5V at the same time.???



    •   Alt24th March 2006, 13:59

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  4. #4
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    Davood Amerion's Avatar
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    negative voltage from positive supply

    look at my post in this link:
    http://www.edaboard.com/viewtopic.ph...816&highlight=

    Regards,
    Davood.



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