This power supply is useful in powering opamps,
comparators, and small amplifiers that uses dual input voltage source specially +12V, ground (0V), and -12V voltages.The circuit is based on the two complementary voltage regulators the 7812 (+12V) and 7912 (-12V). In building the circuit, check the polarity of the electrolytic capacitor to avoid problems.
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| dual 12V power supply |
Materials:
1 - Transformer is 220VAC to 15V -0 -15V, 2A or (120V to 15V -0 -15V, 2A)
1 - bridge rectifier diode rated 2A
2 - 2200uF 25V electrolytic capacitor
2 - 220uF 16V electrolytic capacitor
1 - 7812 or any +12V regulator IC
1 - 7912 or any -12V regulator IC
Note: This power supply project is powered through main supply and can cause electrocution.
The circuit is based on the two complementary voltage regulators the 7812 (+12V) and 7912 (-12V). In building the circuit, check the polarity of the electrolytic capacitor to avoid problems.mil-spec power supply
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