circuit 10a variable power supply symmetric

Description: The 10A variable power supply circuit is symmetrical and can provide a symmetrical output voltage ranging from ±1.2 volts to ±30 volts DC, with a maximum current of 10A. This circuit utilizes symmetrical variable voltage regulators LM317 and LM337, along with NPN and PNP current amplifier transistors, specifically TIP147 and TIP142, which are capable of handling currents up to 10 amperes. The power supply is designed using a 32-volt center-tapped transformer rated for 10A, along with a full-wave rectifier bridge and a ripple filter capacitor rated at 10,000µF/40V. The positive voltage regulation is achieved using the LM317 IC, which maintains a stable output voltage from 1.2 volts DC to 30 volts DC, controlled by a 2.2 kΩ potentiometer. The positive current amplification is provided by the TIP147 PNP transistor configured in a common base arrangement. For the negative voltage supply, the LM337 variable voltage regulator IC is also controlled by a 2.2 kΩ potentiometer, enabling a negative output voltage range from -1.2 volts DC to -30 volts DC. The negative current amplification is handled by the TIP142 NPN transistor, also configured in a common base configuration. This 10A variable power supply circuit is ideal for symmetrical experimental applications, providing a versatile voltage source with selectable polarity and the capability to supply DC currents up to 10A. Additionally, the circuit includes short circuit protection and overheat protection features.

The 10A variable power supply circuit is designed to meet the needs of various electronic applications requiring adjustable voltage and current. The symmetrical design allows for both positive and negative voltage outputs, making it suitable for dual-polarity operations in experimental setups. The LM317 and LM337 regulators are well-regarded for their reliability and performance in voltage regulation, providing stable outputs despite variations in load conditions.

The full-wave rectifier bridge converts the AC voltage from the transformer into a pulsating DC voltage, which is then smoothed by the large filter capacitor. This capacitor is critical in minimizing voltage ripple, ensuring that the output voltage remains stable during operation. The use of a 10,000µF capacitor is significant, as it provides substantial energy storage, allowing the circuit to maintain output stability under load transients.

The potentiometers used for voltage adjustment enable fine-tuning of the output voltage, allowing users to set precise voltage levels as required for their applications. The common base configuration of the TIP147 and TIP142 transistors enhances the circuit's ability to drive higher currents while maintaining stability and reducing distortion.

Incorporating short circuit and overheat protection mechanisms is essential for the longevity and safety of the power supply circuit. These features help prevent damage to the circuit components in the event of a fault condition, ensuring safe operation under various load scenarios. Overall, this 10A variable power supply circuit is a robust solution for laboratory experiments and other applications that demand flexible power supply options.10A variable power supply circuit is symmetrical in the figure below, can provide symmetrical output voltage of ± 1. 2 volts to ± 30 volts DC with a current maximum of 10A. 10A variable power supply circuit uses symmetrical variable voltage regulator LM317 and LM337 then using a current amplifier transistor NPN and PNP transistors TIP147 TIP142 i

s able to drain currents up to 10 amperes. Power supply circuit equipped with a list of components can be seen in Figure 10A variable power supply circuit following symmetrical. Above the power supply circuit using a 32 volt CT transformer 10A and diode full-wave rectifier bridge as symmetric then use the filter capacitor riple 10000uF / 40V.

As a positive voltage regulator using LM317 IC which can control a stable voltage of 1. 2 volts DC to 30 volts DC. Positive output voltage regulator using 2. 2 Kohm potentiometer and a positive path current amplifier using TIP147 PNP transistor is coupled common base. Section a negative power supply voltage using a variable voltage regulator IC LM337 which is controlled using 2.

2 Kohm potentiometer in order to provide a negative output voltage of -1. 2 volts DC to -30 volts DC. Negative path current amplifier using TIP142 NPN transistor is coupled common base. Variable power supply circuit 10A is suitable for use on a symmetric space experiments as giving a voltage source which can diatus as needed to complete the polarity selection and are able to supply DC currents up to 10A. Power supply circuit is equipped with short circuit protection (short circuit) and excessive heat (over heat) on the variable power supply circuit 10A are symmetrical.