How to make a 18V fixed voltage DC power supply | Power supply


How to make a fixed 18V voltage DC power supply | Power supply

18v fixed 1A positive power supply regulator.

This is a simple power supply circuit diagram. In this circuit, an input voltage of 21V to 33V can be used, with a fixed output voltage of 17.3V to 18.7V. This power supply can drive 18V, 1amp, and 15 watt devices. It can be used as a 15 watt electronic device. This power supply uses a voltage regulator lm7818 IC. DC to DC voltage can be converted through this circuit. This is called a stop-down power supply.

Circuit Diagram

18V fixed Voltage Diagram

Circuit Components

  1. LM7818 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 Simple Mobile Charger:

  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. LM7818 Voltage Regulator
  4. LM7818

    The LM7818 voltage regulator fixed-voltage is an integrated circuit (IC). The voltage regulator provides constant output voltage even if its load or input voltage changes.LM7818 is a monolithic 3-terminal positive voltage regulator. It provides a fixed regulated output of 17.3V- 18.7V DC for a variable input voltage range of 21V to 33V DC. The maximum output current is 1 A. The dropout voltage of LM7818 is 2V. LM7818 IC is in compact packaging with 3 pins for positive input voltage/positive output voltage and ground pin. 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 LM7818?

LM7818 maximum input voltage is 33V.

What is the minimum input voltage of LM7818?

LM7818 maximum input voltage is 21V.

What is the maximum output current of LM7818?

LM7818 maximum output current up to 1amp

What is the number of LM7818 terminators?

The number of LM7818 terminals is three.

What is the peak output current of LM7818?

LM7818 peak output current up to 2.2amp,25"C.

Video: Circuit Test

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