This is the circuit diagram of adjustable symmetric 1 to 24VDC, 1A Power Supply. This power supply give dual output positive and negatif output, you can adjust both positif and negative output (+1 to +24VDC and -1 to -24VDC). This kind of power supply also known as dual polarity power supply or splitted power supply which give positive anf negatif output.

This power supply can be used for universal usage, which required not more than 1A DC current. Please take a note that you should adjust the output voltage using general multimeter or DC voltmeter before use this power supply to protect the supplied devices.

Circuit Features:

• Low cost universal symmetric power supply
• Just add a suitable transformer and a heatsink
• Ideal for e.g. op-amp applications, amplifiers, …
• Trimmers can be replaced by potmeters to allow continuous adjustment of output voltage
• LED output indicators

Circuit Specifications:

• Positive and negative output adjustable between 1.2 and 24VDC
• Output current: up to 2 x 1A continuous (with suitable heatsink)
• Max. input voltage: 2 x 24VAC
• Very good line and load regulation
• Low ripple
• Short circuit protection
• Thermal protection

Circuit Manual of Adjustable Symmetric 1 to 24VDC, 1A Power Supply:

Adjustable Symmetrical Power Supply

1 file(s) 1.45 MB

Download Circuit Manual

Kit Version:
This circuit available in kit version by valleman, you may purchase this kit online.

The post Adjustable Symmetric 1 to 24VDC, 1A Power Supply appeared first on Circuit Schematic Diagram.

• A Center Tapped Transformer
• Diode rectifier 4 units (or diode bridge 1 unit)
• Electrolityc capacitor 4 units

Dual Polarity Power Supply Usage Example

The value of each component are depending on your needs. For example, if you need dual polarity power supply to supply an 100W amplifier circuit which need 32V voltage supply, then the recommendation are as follow:

• Transformer: 3A center tapped transformer 24V – 0 – 24V.
• Diode rectifier 1N5402 : 4 units
• Electrolityc capacitor (elco) 4700uF/50V – 6800uF/50V : 4 units

With above component’s value, the power supply will be able to handle 100W output load.

Basic Dual Polarity Power Supply Circuit Note: Based on above scheme, the ground is connected to the “E” mark. The “E” is the center of the transformer. In center tap transformer, there are some outputs that have same values (24V for example) and an output which has 0 output. The ground (E) should be connected to 0 of transformer output.

The post Basic Dual Polarity Power Supply appeared first on Circuit Schematic Diagram.