Switching Power Supply Circuits
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The following diagram is the 50W offline switching power supply circuit design. The circuit powered by a MOSFET. BUZ80A/IXTP4N8 for 220V AC voltage input and GE IRF823 for 110V AC input voltage. The output will be 5VDC with electric current up to 10A. The....
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Self switching Power Supply. One of the main features of the regulated power supply circuit being presented is that though fixed-voltage regulator LM7805 is used in the circuit, its...
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This is low voltage high-current ouput, switching dc power supplly wiht input 220 Volts AC, In this circuit, an St2 diac relaxation oscilator, Q3, C1, and the diac, initiates conduction of the output switching transistor Q1, the on time of which is....
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This power supply uses two VN400A 400 Volts MOSFETs in a half-bridge power switch configuration. Each output consists of +5V at 20 A and 15 V at 1 A. Three-terminal regulators are used for the low-currents outputs, either 12 Volts or 15 Volts can be made....
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This is a simple low-cost 50W off-line switching power supply, which can be used for home projects or to learn operation of flyback converters. It can work over a universal AC line input range 90-264 VAC and provides a 12VDC output at more then 4A load. Line....
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About this Circuit This is a good Circuit for those persons needing to Boost or drop a voltage. The Output is High Frequency, but can be Rectified and Filtered to give DC Out. When Rectifying High Frequencies, You MUST use the Appropriate types of HIGH SPEED....
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With the increase of the modern electrical equipment kind for vehicle, the increase of the power level, there are more and more patterns of power needed, including AC supply and direct current power supply. The power needs to adopt the switch converter the....
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As everyone knows, any closed loop system is unit gain to noise temperature ratio l in the gain to noise temperature ratio, the phase shift that and inside varies with frequency is at the time of the 360 deg, there will all not be possibility in this closed....
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Because switching power supply energy-conservation also brings the huge economic benefits, cause the attention of the various circles of society to be popularized rapidly. With the technical development at full speed of power, high frequency, becoming the....
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Improve the power factor PF Use a energy-conserving important factor of electrical equipment. With the development of electric electron technology, high-frequency active power factor correction PFC Technology has already been more and more applied to various....
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The NCP1072/NCP1075 products integrate a fixed frequency current mode controller with a 700 V MOSFET. Available in a PDIP 7 or SOT 223 package, the NCP1072/5 offer a high level of integration, including soft start, frequency jittering, short circuit....
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Daily switching power supply, mainly offer the direct current power supply for electronic device and supply power. The required direct-current volts of the electronic device, ranges are generally all between several volts and more than ten volts, and the....
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At present, the switching power supply is with its high performance, high efficiency 75%, the switching power supply efficiency of the single scale integration has already been more than 90% now, This pair solves the energy problem and plays a role in adding....
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With the high-speed development of social economy, the human demand for electric energy is larger and larger. Under non-renewable, situations in short day by day of energy such as the fossil energy, etc. , the increasingly many country realizes the power....
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The motor vehicle is the automotive of no emission at present, as the means of transportation of green, will bring the huge change to human society in the 21st century. And the direct-flow brushless electric machine relies on its fine characteristic to....
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Using the LTC3810-5 synchronous step-down switching regulator controller can be designed a very easy and simple 12 volt switching power supply electronic project using few external electronic parts. LTC3810-5 synchronous step-down switching regulator....
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This circuit will double almost any DC input voltage as well as handling plenty of current. 12 to 24V is just an example. With a few changes, it can also supply any desired output voltage. There are many possible applications. One I can think of would be to....
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The MAX1846 inverting circuit to implement a switch-mode power supply that provides a -15V at 0. 5A output from a 4. 5V to 12V input. This MAX1846 circuit also adds a few components to the minimum circuit implementation. C20 adds a pole to compensate for the....
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When VOUT is very low during start-up or a short-circuit fault on the output, the switching regulator must operate at low duty cycles to maintain the power switch current within the current limit range, since the inductor current decay rate is very low....
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The microcontroller won`t be able to drive the gate of Q1 very hard (usually GPIO pins can only source a few milliamps) so your turn-on and turn-off will be very slow. This will limit how well your high-side switch will behave. You don`t have a....
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VOUT to be 3V when the switch is open and 5V when the switch is closed. The simulation seems to give me what I want when the switch is open, but not when it`s closed. What am I doing wrong Is there a better way to do this I was avoiding a common cathode....
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The circuit in the schematic below is an improved piece of generator electronics. This is an unregulated switcher. Its function is to make the instrument as loud as possible while keeping the CPU running as long as possible. It transfers electrical energy....
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Adjustable 5A Step Down 5 MHz switching regulator circuit can also be used to overcome such problem. It uses ST1S03 step down DC-DC converter.The ST1S03 can also be used to power low-voltage digital core in HDD application. With input voltage range 3V to....
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This circuit is the variable output switching regulator for general purpose applications. An LM105 positive regulator is used as the amplifier-reference for the switching regulator. Positive feedback to induce switching is obtained from the LM105 at pin 1....
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The total dollars count for all parts is much smaller that the cost of an heavy duty DPDT foot switch. As seen on the previous page suggested electronic switch circuits can be made easily and I have found that their applications is justified. New mechanical....
-
12 Volt / 2 A Switching Power Supply power supply. Go to that page to read the explanation about above power supply related circuit diagram...
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-
The following diagram is the 50W offline switching power supply circuit design. The circuit powered by a MOSFET. BUZ80A/IXTP4N8 for 220V AC voltage input and GE IRF823 for 110V AC input voltage. The output will be 5VDC with electric current up to 10A. The....
Self switching Power Supply. One of the main features of the regulated power supply circuit being presented is that though fixed-voltage regulator LM7805 is used in the circuit, its...
This is low voltage high-current ouput, switching dc power supplly wiht input 220 Volts AC, In this circuit, an St2 diac relaxation oscilator, Q3, C1, and the diac, initiates conduction of the output switching transistor Q1, the on time of which is....
This power supply uses two VN400A 400 Volts MOSFETs in a half-bridge power switch configuration. Each output consists of +5V at 20 A and 15 V at 1 A. Three-terminal regulators are used for the low-currents outputs, either 12 Volts or 15 Volts can be made....
This is a simple low-cost 50W off-line switching power supply, which can be used for home projects or to learn operation of flyback converters. It can work over a universal AC line input range 90-264 VAC and provides a 12VDC output at more then 4A load. Line....
About this Circuit This is a good Circuit for those persons needing to Boost or drop a voltage. The Output is High Frequency, but can be Rectified and Filtered to give DC Out. When Rectifying High Frequencies, You MUST use the Appropriate types of HIGH SPEED....
With the increase of the modern electrical equipment kind for vehicle, the increase of the power level, there are more and more patterns of power needed, including AC supply and direct current power supply. The power needs to adopt the switch converter the....
As everyone knows, any closed loop system is unit gain to noise temperature ratio l in the gain to noise temperature ratio, the phase shift that and inside varies with frequency is at the time of the 360 deg, there will all not be possibility in this closed....
Because switching power supply energy-conservation also brings the huge economic benefits, cause the attention of the various circles of society to be popularized rapidly. With the technical development at full speed of power, high frequency, becoming the....
Improve the power factor PF Use a energy-conserving important factor of electrical equipment. With the development of electric electron technology, high-frequency active power factor correction PFC Technology has already been more and more applied to various....
The NCP1072/NCP1075 products integrate a fixed frequency current mode controller with a 700 V MOSFET. Available in a PDIP 7 or SOT 223 package, the NCP1072/5 offer a high level of integration, including soft start, frequency jittering, short circuit....
Daily switching power supply, mainly offer the direct current power supply for electronic device and supply power. The required direct-current volts of the electronic device, ranges are generally all between several volts and more than ten volts, and the....
At present, the switching power supply is with its high performance, high efficiency 75%, the switching power supply efficiency of the single scale integration has already been more than 90% now, This pair solves the energy problem and plays a role in adding....
With the high-speed development of social economy, the human demand for electric energy is larger and larger. Under non-renewable, situations in short day by day of energy such as the fossil energy, etc. , the increasingly many country realizes the power....
The motor vehicle is the automotive of no emission at present, as the means of transportation of green, will bring the huge change to human society in the 21st century. And the direct-flow brushless electric machine relies on its fine characteristic to....
Using the LTC3810-5 synchronous step-down switching regulator controller can be designed a very easy and simple 12 volt switching power supply electronic project using few external electronic parts. LTC3810-5 synchronous step-down switching regulator....
This circuit will double almost any DC input voltage as well as handling plenty of current. 12 to 24V is just an example. With a few changes, it can also supply any desired output voltage. There are many possible applications. One I can think of would be to....
The MAX1846 inverting circuit to implement a switch-mode power supply that provides a -15V at 0. 5A output from a 4. 5V to 12V input. This MAX1846 circuit also adds a few components to the minimum circuit implementation. C20 adds a pole to compensate for the....
When VOUT is very low during start-up or a short-circuit fault on the output, the switching regulator must operate at low duty cycles to maintain the power switch current within the current limit range, since the inductor current decay rate is very low....
The microcontroller won`t be able to drive the gate of Q1 very hard (usually GPIO pins can only source a few milliamps) so your turn-on and turn-off will be very slow. This will limit how well your high-side switch will behave. You don`t have a....
VOUT to be 3V when the switch is open and 5V when the switch is closed. The simulation seems to give me what I want when the switch is open, but not when it`s closed. What am I doing wrong Is there a better way to do this I was avoiding a common cathode....
The circuit in the schematic below is an improved piece of generator electronics. This is an unregulated switcher. Its function is to make the instrument as loud as possible while keeping the CPU running as long as possible. It transfers electrical energy....
Adjustable 5A Step Down 5 MHz switching regulator circuit can also be used to overcome such problem. It uses ST1S03 step down DC-DC converter.The ST1S03 can also be used to power low-voltage digital core in HDD application. With input voltage range 3V to....
This circuit is the variable output switching regulator for general purpose applications. An LM105 positive regulator is used as the amplifier-reference for the switching regulator. Positive feedback to induce switching is obtained from the LM105 at pin 1....
The total dollars count for all parts is much smaller that the cost of an heavy duty DPDT foot switch. As seen on the previous page suggested electronic switch circuits can be made easily and I have found that their applications is justified. New mechanical....
12 Volt / 2 A Switching Power Supply power supply. Go to that page to read the explanation about above power supply related circuit diagram...
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to....
