Automatic power switch for ATX power supplies

Automatic power switch for ATX power supplies
If you have a computer, for example, wants to operate for a long time like a server,  when using a standard ATX power supply the  problem exist  after a power failure that the computer is'nt automaticaly turn on. A few motherboards can do those  function, just to set using the BIOS Setup, and the other way is to make the automatic power switch. An ATX power supply is normally controlled by the motherboard.  ATX power supply provides a  5

Simple 12 Volt Battery charger

Simple 12 Volt Battery charger
This kind of battery charger circuit will quickly and easily recharge almost every lead acid battery pack.This battery charger supplies maximum current till the current drawn by the battery falls to 150 miliamper. At this point, less voltage will be applied to complete and avoid over charging. Once the lead acid battery is completely charged, this circuit goes off and lights up the led, showing that the battery has completed to be charged. A suitable heat sink should be

Unregulated Power supply for high-end audio amplifier with two polarity

Unregulated Power supply for high-end audio amplifier with two polarity
The Power supply for high-end audio recommended for work with with your hi-fi amps shown in the project is actually very simple, without any good skill level is needed to create (or even design) one. There are several factors you should be cautious with, like the routing with higher current leads, however, these can be completed. Form of the following Power supply for high-end audio is simple. A single four Ampere fuse is required to protect the transformer and

A Simply 9V / 2A Power Supply

A Simply 9V / 2A Power Supply
A simple 9 Volt 2 amp power supply using a single IC regulator. This is very simple circuit. Everything is done by the regulator. The 78S09 can provide up to 2 amps continuous output while maintaining a low noise and very nicely regulated supply. (more…)

Simple Uninterruptible Power Supply (UPS)

Simple Uninterruptible Power Supply (UPS)
This schematic is simply a basic system of UPS (uninteruptible power supply). The main schematic gives a continuous regulated 5 Volt result with an not regulated 12 Volt supply. Regarding electricity line fail the battery will take control, without any surges within the regulated supply. Notices: These schematic may possibly customized for the purpose of different regulated and even unregulated voltages with the use of different regulators and rechargeable batteries. For a about 15 Volt regulated supply use a

Xbox Power Supply

Xbox Power Supply
Xbox needs Xbox Power Supply to work. Xbox is really a game made by Microsoft company. The game was on 15 Nov 2001 in the us, 22 Feb 2002 in The japanese, 14 March 2002 released in around australia and European countries. In the Xbox game marketplace is rivaling Sony PS 2, Nintendo GameCube and Sega Dreamcast. Power Supply (PSU) to the Xbox includes a fan. Xbox power provides output in the form of dc (DC) and must be

40V Regulated Power Supply based TIP42A and LM317

40V Regulated Power Supply based TIP42A and LM317
This is a 40V Regulated Power Supply, built using IC LM317 as regulator and TIP42A as electric current amplifier. Component part:  Regulated Power Supply R1 = 3R9 1 or 2W R2 = 22R R3 = 6K8 R4 = 220R R5 = 4K7 C1 = 3300µF/50V or 4700µF/50V C2,C5 = 100nF C3 = 10µF/63V C4 = 220µF/50V D1 = Diode bridge 100V 4A D2 = 1N4002 D3 = LED IC1 = LM317T Q1 = TIP42A SW2 = SPST Mains switch

1.5-25V Power supply with preregulator

1.5-25V Power supply with preregulator
This circuit using KR142EN12 (analog - LM317 ) ic regulator that can handle load currents up to 2 amperes. For higher currents can be used IC LT1083/84/85 that each can handle currents 7/5/3A. 2000uF capacitor C3 is selected from the calculation of the current 1 Ampere. Resistor R9 is used as a current sensor to an ammeter. (more…)