Clik here to view.
6.8 Volt Transformerless Power Supply.
Quite a simple power supply unit can be built for half an hour. The scheme is designed for voltage and current of 6.8 V 300mA. The voltage can be changed by replacing the Zener D4 and, if necessary,...
View ArticleClik here to view.
60 Watt Switching Power Supply
The scheme is a classical flyback power supply for PWM UC3842. Since the scheme’s base power supply output parameters can be easily converted to the necessary. As an example, for the consideration of...
View ArticleClik here to view.
Seasonic X-400 Fanless SS-400FL
For fanless unit X-400 is a bit unusual: no walls, as expected, perforated, but where’s the huge heat sink that forms the top cover? Without a doubt, Seasonic X-400 Fanless could surprise : externally...
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Universal power supply with a “safe” high-voltage capacitor
Universal power supplies must operate from AC line voltage, whose value can range from 90 to 264 V, 50 or 60 Hz. The rectified input voltage from the diode bridge filter capacitor charges up to 120 …...
View ArticleClik here to view.
Computer Power Supply Repair
Actually power supply repair is rarely – less expensive to replace it with new. A defective power supply is usually thrown away, unless, of course, it is not a quality or expensive. In the latter case...
View ArticleClik here to view.
Car Lamp Charger
Scheme of the Car lamp charger is shown in above. A distinctive feature of the scheme is that the battery will never recharge. This Car lamp charger circuit is built into the “Chinese” lantern, which...
View ArticleClik here to view.
Simple Switching Power Supply 15 Watt
This Simple switching power supply for 15 Watt can be used to power any load up to 15 … 20 watts and has smaller dimensions than a similar, but with the step-down transformer, operating at a frequency...
View ArticleClik here to view.
Positive Regulator with PNP Boost
The IC8211 (Programmable Voltage Detectors) provides the voltage reference and regulator amplifier, while Q1 is the series pass transistor. R1 defines the output current of the IC8211, while Cl and C2...
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Dual Polarity Power Supply +/- 15V based Transistors
This Dual supply circuit is suitable for installation of power analog (audio or measurement), it provides a bipolar voltage with voltage source between 20 and 50 V (in audio power amp, for example)....
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50V DC 3A Stabilized and Regulated Power Supply
This is the DC power supply that will give you 50V / 3A output, regulated and stabilized. Components List: R1=10Kohm R8=1.8Kohm 0.5W Q3=BC303 or BC461 R2=1 ohm 5W R9=3.3Kohm 0.5W D1….4=Bridge 15A...
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Dual Polarity Power Supply +/- 15V based Transistors
This Dual supply circuit is suitable for installation of power analog (audio or measurement), it provides a bipolar voltage with voltage source between 20 and 50 V (in audio power amp, for example)....
View ArticleClik here to view.
50V DC 3A Stabilized and Regulated Power Supply
This is the DC power supply that will give you 50V / 3A output, regulated and stabilized. Components List: R1=10Kohm R8=1.8Kohm 0.5W Q3=BC303 or BC461 R2=1 ohm 5W R9=3.3Kohm 0.5W D1….4=Bridge 15A...
View ArticleClik here to view.
6.8 Volt Transformerless Power Supply.
Quite a simple power supply unit can be built for half an hour. The scheme is designed for voltage and current of 6.8 V 300mA. The voltage can be changed by replacing the Zener D4 and, if necessary,...
View ArticleClik here to view.
60 Watt Switching Power Supply
The scheme is a classical flyback power supply for PWM UC3842. Since the scheme’s base power supply output parameters can be easily converted to the necessary. As an example, for the consideration of...
View ArticleClik here to view.
Seasonic X-400 Fanless SS-400FL
For fanless unit X-400 is a bit unusual: no walls, as expected, perforated, but where’s the huge heat sink that forms the top cover? Without a doubt, Seasonic X-400 Fanless could surprise : externally...
View ArticleClik here to view.
Universal power supply with a “safe” high-voltage capacitor
Universal power supplies must operate from AC line voltage, whose value can range from 90 to 264 V, 50 or 60 Hz. The rectified input voltage from the diode bridge filter capacitor charges up to 120 …...
View ArticleClik here to view.
Computer Power Supply Repair
Actually power supply repair is rarely – less expensive to replace it with new. A defective power supply is usually thrown away, unless, of course, it is not a quality or expensive. In the latter case...
View ArticleClik here to view.
Car Lamp Charger
Scheme of the Car lamp charger is shown in above. A distinctive feature of the scheme is that the battery will never recharge. This Car lamp charger circuit is built into the “Chinese” lantern, which...
View ArticleClik here to view.
Simple Switching Power Supply 15 Watt
This Simple switching power supply for 15 Watt can be used to power any load up to 15 … 20 watts and has smaller dimensions than a similar, but with the step-down transformer, operating at a frequency...
View ArticleClik here to view.
Positive Regulator with PNP Boost
The IC8211 (Programmable Voltage Detectors) provides the voltage reference and regulator amplifier, while Q1 is the series pass transistor. R1 defines the output current of the IC8211, while Cl and C2...
View Article
