Dual Polarity Power Supply +33V, 0 , -33V

The following diagram is the example of dual polarity power supply circuit which will give you (+33V) ; (0) and (-33V) DC voltage. This circuit is usually used for power amplifier circuit which require dual polarity power supply to work.

Dual Polarity Power Supply +33V, 0 , -33V  circuit diagram

Components List:
R1 = 3K3 1/2W
C1 = 10nF/1000V
C2,C3 = 4700µF/50V
C4,C5 = 100nF/63V
D1 = 200V 8A Diode bridge
D2 = 5mm. Red LED
F1,F2 = 3.15A Fuses with sockets
T1 = 220V Primary, 25 + 25V Secondary, 2A minimum
PL1 = Male Mains plug
SW1 = SPST Mains switch

source: redcircuits.com

About Power Supply
A power supply is a device that supplies electrical energy to one or more electric loads. The term of "power supply" is most commonly applied to devices that convert one form of electrical energy to another, though it may also refer to devices that convert another form of energy (e.g., mechanical, chemical, solar) to electrical energy.
A power supply may be implemented as a discrete, stand-alone device or as an integral device that is hardwired to its load. In the latter case, for example, low voltage DC power supplies are commonly integrated with their loads in devices such as computers and household electronics. More explanation about power supply can be found at wikipedia.org

This is the tutorial about "How to build an AC to DC power supply ". The video tutorial covers the basics of diodes, bridge rectifiers, and how to build simple unregulated AC to DC power supplies than can handle a few mA up to several Amps.

Watch the video: