How to make positive +5v and negative -5v power supply

How to make positive +5v and negative -5v power supply

How to make voltage regulators ic LM7805 and LM7905

This series of fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. Each of these regulators can deliver up to 1.5A of output current. The internal current-limiting and thermal-shutdown features of these regulators essentially make them immune to overload. In addition, to use as fixed-voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents and also can be used as the power-pass element in precision regulation.

The LM7905 series of 3-terminal regulators is available with fixed output voltages of −5V. These devices need only one external component—a compensation capacitor at the output. The LM7905 series is capable of supplying 1.5A of output current. These regulators employ internal current limiting safe area protection and thermal shutdown for protection against virtually all overload conditions. The low ground pin current of the LM7905 series allows the output voltage to be easily boosted above the preset value with a resistor divider. The low quiescent current drain of these devices with a specified maximum change with line and load ensures good regulation in the voltage-boosted mode

Circuit Diagram

Positive Negative power supply

Circuit Components

  1. Voltage Regulator LM7805 [See Buy Click Amazon]
  2. Voltage Regulator LM7905 [See Buy Click Amazon]
  3. Capacitor 0.1uf, 50volt [See Buy Click Amazon]
  4. *Please note: These are affiliate links. If you purchase items through these links, I may make a commission. I will appreciate your support in this way!

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    Components used:

    1. Voltage Regulator LM7805
    2. LM7805LM7805 Pinout diagram

      This series of fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. Input voltage 7v to 25v and output voltage 5v fixed. These applications include on-card regulation for the elimination of noise and distribution problems associated with single-point regulation. Each of these regulators can deliver up to 1.5 A of output current. The internal current-limiting and thermal-shutdown features of these regulators essentially make them immune to overload. In addition, to use as fixed-voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents and also can be used as the power-pass element in precision regulators

    3. Voltage Regulator LM7905
    4. LM7905

      The LM7905 series of 3-terminal regulators is available with fixed output voltages of −5V. These devices need only one external component—a compensation capacitor at the output. The LM7905 series is capable of supplying 1.5A of output current. These regulators employ internal current limiting safe area protection and thermal shutdown for protection against virtually all overload conditions. The low ground pin current of the LM7905 series allows the output voltage to be easily boosted above the preset value with a resistor divider. The low quiescent current drain of these devices with a specified maximum change with line and load ensures good regulation in the voltage-boosted mode

    5. Capacitor 0.1uf, 50volt
    6. Capacitor 0.1uf 50v

      The capacitor is a Two-Terminal passive component having the Property of Capacitance. This Property Electrifies (charging with electricity) Capacitors with input Voltage. Capacitors Condense Electricity, Hence it is also known as a Condenser. It consists of two Electrical Conductors that are Separated by Distance. The Capacitor Stores Charge and can act like a Battery. It is necessary for filter Circuits to Minimize voltage spikes, and Smoothing changes in voltage.

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    Frequently Asked Questions:
    What is a negative -5v power supply?

    A negative voltage in a circuit is a voltage that is more negative in polarity than the ground of the circuit.

    What is a positive 5v power supply?

    A positive voltage in a circuit is a voltage that is more positive in polarity than the ground of the circuit.

    Why is a negative voltage used?

    It is the highest, more secure that the uncompromised voltage goes over long wires. Negative voltage is used, so the current leaking does not electroplate the moisture copper, which is in the wire

    Video: Circuit Test



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