How to make a Negative 5V fixed voltage DC power supply | Power supply | Using LM7905


How to make a Negative 5V fixed voltage DC power supply | Power supply | Using LM7905

5v fixed 1A negative power supply regulator.

This is a simple negative power supply circuit diagram. In this circuit, an input negative voltage of -7V to -20V can be used, with a fixed output negative voltage of -4.75V to -5.25V. This power supply can drive negative -5V, 1amp, and 15-watt devices. It can be used as a 15 watt devices. This power supply uses a voltage regulator lm7905 IC. DC to DC voltage can be converted through this circuit. This is called a stop-down negative power supply.

Circuit Diagram

Negative 5V fixed Voltage ckt Diagram

Circuit Components

  1. LM7905 voltage regulator [See Buy Click Amazon]
  2. 1uf,50V Capacitor [See Buy Click Amazon]
  3. 0.1uf,50V Capacitor [See Buy Click Amazon]

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Components used to Power supply:

  1. 1uf,50V Capacitor
  2. Capacitor,50V,1uf

    The capacitor is a Two-Terminal detached part having the Property of Capacitance This Property Zaps (accusing of power) Capacitors with input Voltage. Capacitors Gather Power, Thus it is otherwise called a Condenser. It comprises two Electrical Conveyors that are Isolated by Distance. The Capacitor Stores Charge and can carry on like a Battery. It is fundamental for channel Circuits to Limit voltage spikes, and Smoothing changes in voltage.

  3. LM7905 Voltage Regulator
  4. LM7905

    A Voltage Regulator is an integrated circuit (IC). Voltage regulator provides constant output voltage even if its load or input voltage changes.LM7905 is a monolithic 3-terminal negative voltage regulator. LM7905 has an input voltage of -7V to -20v and an output voltage of -4.8v to -5.2v constant. The maximum output current is 1.5-A. It has internal thermal shutdown, short-circuit and SOA protection, and an output capacitance of 0.5 pF.

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

    The capacitor is a Two-Terminal detached part having the Property of Capacitance This Property Zaps (accusing of power) Capacitors with input Voltage. Capacitors Gather Power, Thus it is otherwise called a Condenser. It comprises two Electrical Conveyors that are Isolated by Distance. The Capacitor Stores Charge and can carry on like a Battery. It is fundamental for channel Circuits to Limit voltage spikes, and Smoothing changes in voltage.

Frequently Asked Questions:
What is the maximum input voltage of LM7905?

LM7905 maximum input voltage is 20V.

What is the minimum input voltage of LM7905?

LM7905 maximum input voltage is 7V.

What is the maximum output current of LM7905?

LM7905 maximum output current up to 1amp

What is the number of LM7905 terminators?

The number of LM7905 terminals is three.

What is the peak output current of LM7905?

LM7905 peak output current up to 2.2amp,25"C.

Video: Circuit Test

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