Voltase hobby

Switching Regulator Variable L4970 is supplying current to a maximum of 10A with an adjustable output voltage from 0-25 VDC. Switching Regulator Variable L4970 series is built with the main component as a Switching Regulator IC L4970 her. Switching Regulator Variable L4970 series include not complicated to make his own, which need to be considered is the IC L4970 require sufficient cooling to operate in an optimal and durable. Switching Regulator Variable Series L4970 complete picture can be seen below.

Output Voltage Switching Regulator Variable L4970 series can be in control by adjusting potentiometer 18KOhm.

Data sheet for LM2575 SIMPLE SWITCHER 1A Step-Down Voltage Regulator

This circuit of +5 V switching power supply uses LM2575-5.0. You can make the stable voltage by using Terminal 3 and LM317 regulator. However, due to the current electrical output and electrical current is introduced it, about the difference between electrical power input (x Input voltage power input) and output (voltage output x output current) is consumed as heat with the regulator. Because it is, the efficiency is not good. In the event that the switching regulator that only inputs the electrical energy needed to produce the input for the switching operation. Because it is, there is little power to consume with the regulator and is efficient.

DC to DC step down voltage regulator. Wide input voltage 8Vdc to 40Vdc.

• LM2575-3.3 (3.3Vdc output)
• LM2575-5.0 (5Vdc output)
• LM2575-12 (12Vdc output)
• LM2575-15 (15Vdc output)
• LM2575-ADJ (1.23Vdc to 37Vdc output)

The switching regulator which introduces in this page is the type and step is to get the output voltage that is less than the input voltage. As the regulator, use this time, the output is 5-V fixation.
The controller switching stage such attacks may be the voltage that is higher than the input voltage.

IC LM2575

The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions of a step down (money) switching regulator capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V and adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed frequency oscillator.

The LM2575 series offers a high-performance replacement for popular three-terminal linear regulators. Substantially reduced the size of the heatsink, and in many cases no heat sink is required.

A standard series of inductors optimized for use with the LM2575 are available from several manufacturers. This feature greatly simplifies the design of switching power supplies.

Other features include a guarantee of ± 4% output voltage at the input voltages within specific conditions and output load, and ± 10% in the oscillator frequency. External stop is included, with 50 mA (typical) standby current. The output switch includes cycle-by-cycle current limiting, thermal shutdown and full protection for the failure.

The switching regulator power supply used LM2575-5.0 on this schematic. You can make the stable voltage by using the 3 terminal regulator like LM317. However, because the output electric current and the inputted electric current are the same approximately, the difference between the input electric power (The input voltage x The input electric current) and the output power (The output voltage x The output current) is consumed as the heat with the regulator. Because it is, the efficiency isn�t good.

Data sheet for LM2575

SIMPLE SWITCHER 1A Step-Down Voltage Regulator

The switching regulator power supply used LM2575-5.0 on this schematic. You can make the stable voltage by using the 3 terminal regulator like LM317. However, because the output electric current and the inputted electric current are the same approximately, the difference between the input electric power (The input voltage x The input electric current) and the output power (The output voltage x The output current) is consumed as the heat with the regulator. Because it is, the efficiency isn�t good.

When you turn on the computer but it not working, of course the problem is electrical conditions is not installed, or maybe the power supply is damaged. For a Mechanic/ Technician would check the power supply section. Once you open the block power supply on your computer will certainly replace the power supply with the new block.

But you have ever tried to fix Switching Power Supply CPU Computer, then where is the location of the damage?

Ive had some time fix (repair) Switching Power Supply CPU (Central Processing Unit). From experience Ive found on the transformer primary is connected to the Transistors (in heat sink) are damaged condition.

When replaced a fuse but still no outputs power in secondary, FET Transistors is damaged, replace this Transistor with new parts.

When you have replaced/ installed still not lit, try searching for the groove;

[TP = Test Probe];

So from my experience, check the fuse, FET, IC LM 3842, 2x220KOhm series resistor, and the other on the transformer primary, and then check the output voltage on the secondary.

So, may be useful.

Follow the next articles from me about Power Supply,
Bustamsyah

Almost all electronic devices use Power Supply.
Now, electronics equipment the ability offer designed for easy and lighter, that is issued an electrical current is kind of massive. Imagine a electrical equipment weighting 5-30kg for a classical equipment.

People tried to form the instrumentality smaller, straightforward and light-weight, very easy to hold anyplace. Fashionable power supply is currently employing a tiny electrical device, however should bear a method referred to as shift frequency mode. A switched-mode power offer (switching-mode power offer, SMPS, or switcher) is Associate an electronic power supply schema that comes with a switching regulator to convert electric power with efficiency. Like different power supplies, an SMPS transfers power from a supply, like mains power out, to a load equipment, like a personal pc, television, whereas converting voltage and current characteristics. In contrast to a linear power offer, the pass an semiconductor(Transistor) of a switching-mode offer regularly switches between low dissipation, full on and off switched, and spends little or no time within the high dissipation transitions, that minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varied the magnitude relation of on-to-off time. In distinction, a linear power supply regulates the output voltage by regularly dissipating power within the pass semiconductor. This higher power conversion potency is a vital advantage of a switched-mode power supply. Switched-mode power supply may additionally  be considerably smaller and lighter than a linear offer because of the smaller transformer size and weight.

Switching regulators area unit used as replacements for linear regulators once higher potency, smaller size or lighter weight area unit needed. They are, however, additional complicated; their shift currents will cause electrical noise issues if not fastidiously suppressed, and easy styles might have a poor power issue.