Low Power Switching Power Supply 3.3V to 9V / 0.5A

Low Power Switching Power Supply 3.3V to 9V / 0.5A
The circuit is low powered power supply with switching voltage on a dedicated chip, MS34063. In comparison with linear stabilizers have a great impulse efficiency, lower weight and dimensions, but at the same time have some disadvantages, one of the key - an increased level of output voltage ripple. (more…)

60 Watt Laptop Battery Charger

60 Watt Laptop Battery Charger
The circuit is designed for laptop battery charger with 20V output voltage. This circuit uses TOP 246 Y made ​​by Power integrations. TOP 246 Y eliminates half the discrete components compared with the UC3842. As promised Power Integration, this IC is more reliable, has a smaller form, reducing the time in designing and saving costs. (more…)

60 Watt Switching Power Supply

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 selected Power supply for  Notebook Power 20V 3A. If necessary, you can get some voltage related or independent. (more…)

70 W Switching Power supply with KA2S0880 IC

70 W Switching Power supply with KA2S0880 IC
The schematic shows the power supply capacity of 70W stereo amplifier Power converter is built on a chip KA2S0880, which includes all the necessary components to build the primary of the power supply. This chip is very stable in operation and has all the necessary protections. (more…)

Stable Power Supply for High Voltage -100V to -1000V

Stable Power Supply for High Voltage -100V to -1000V
Stable power supply for high voltage power supply for the core of a high voltage of the PWM - Controller TL494, loaded with over 4050 followers on a pair of powerful field-effect transistors, switching the primary winding of step-up transformer (4 + 4 turns - the primary winding, 200 turns - the secondary winding). With the secondary winding through a rectifier with voltage doubling and smoothing filter RC LC voltage reaches the voltage divider, and the regulator output voltage.