Introduction
The power supply is the basic electronic circuit, used in every other electronic device. But, there are some circuits and devices that need a dual power supply. For example, some of the operational amplifier circuits need a dual supply as the opamps can work with both polarities. In the same vein, DC motors need the positive and negative supply t to rotate in clockwise and anti-clockwise directions.
So, it is also necessary to learn about the dual power supply. And, for this purpose, in this tutorial, we are going to Make a “5v Dual Power Supply Circuit”. The circuit is easy to make as it requires the IC L7660, which uses very few external components.
Hardware Components
The following components are required to make 5v Dual Power Supply Circuit
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | IC | ICL7660 | 1 |
| 2. | Electrolyte Capacitor | 10µF/16V | 2 |
| 3. | Resistor | 2KΩ, 1KΩ | 1,1 |
| 4. | 3-Pin 2-Pin Connector | – | 1,1 |
ICL7660 Pinout
For a detailed description of pinout, dimension features, and specifications download the datasheet of ICL7660
5v Dual Power Supply Circuit
Working Explanation
This circuit is very easy to understand and for beginners, it is really simple to make. To make this 5v Dual Power Supply Circuit, we have used this CMOS voltage converter ICL7660, having 8 pins. Input voltage is given at pin 8 of an IC. Pin 3 is for the ground. Pin 2 and Pin 4 are for the positive and negative polarity of the capacitor. After these connections, we have got the dual supply at the output load.
Application and Uses
- It can be used in operational amplifier circuits.
- For DC motors to rotate in both directions.
- Also, for the circuits that need an inexpensive negative supply.
- Moreover, for the negative supply of RAMs.
- And in other electronic devices.
