Dual Power Supply Circuit Diagram With Explanation

Designing a simple dual power supply actually involves a just a center tap power supply and a bridge rectifier along with a couple of high value filter capacitors as shown below.

Dual power supply circuit diagram with explanation.

12 volt dual power supply circuit diagram. 15 volt dual power supply circuit diagram. The centre tapped describes the voltage output of. Many ideas of 12v and 5v dual power supply circuit diagram at 3a max.

Step down transformer center tap 6 or 15 or 20 vac depends on your need. A regulated power supply essentially consists of an ordinary power supply and a voltage regulating device as illustrated in the figure. This is called a dual supply because it is like two ordinary supplies connected together as shown in the diagram. Some electronic circuits require a power supply with positive and negative outputs as well as zero volts 0v.

Converting 220v ac into 12v ac using step down transformer. Voltage range varies depends on circuit output voltage. Dual supplies have three outputs for example a 9v supply has 9v 0v and 9v outputs. Constructing dual power supply circuit.

Bridge rectifier module or 1n4007 diode x 4 capacitor 1000uf 2 10uf 2 0 1uf 2. 79xx ic used to regulate the negative input voltage where as the 78xx ic used for positive input dc voltage regulate. The primary terminals of the centre tapped transformer is connected with household supply 220v ac 50hz and output is taken from secondary terminals of the transformer. For instance a step down transformer is used in a transistor radio and a step up transformer is used in a crt.

In many of the circuit applications especially the ones using op amps a dual power supply becomes mandatory for enabling the and ground supplies to the circuit. The lm317 series of adjustable 3 terminal positive voltage regulators is capable of supplying in excess of 1 5a over a 1 2v to 37v output range. For experimenting electronic circuits and project we require variable power supply it requires center tap transformer. A transformer alters the ac mains voltage toward a necessary value and the main function of this is to step up and step down the voltage.

This post has 10 comments. Previous post how change 7805 voltage using diodes. A power supply can be used for providing the necessary amount of power at the precise voltage from the main source like a battery. The output from an ordinary power supply is fed to the voltage regulating device that provides the final output.

Next post simple designing 12v 5a linear power supply. This is the general 12 v dc dual power supply circuit. The output is not regulated of this circuit. Regulated power supply block diagram.