Schematic Diagrams

Useful schematic and wiring diagrams. ✔ ✔ Enjoy electronic circuits, let your idea comes to hardware


52W SMPS AC-DC Adapter

One AC-DC converter that provides a good accuracy is SMPS AC-DC converter. Test data shows efficiency of 85.4% at 230 Vac input and 6A output current and 83.2% at 115 Vac input and 6A output current. This converter has the universal input voltage range. containing 92 to 276 Vac variation with only 24 mV change […]

Step-Down Charge Pump Regulator for USB Powered Devices

this is a circuit of Step-Down Charge Pump Regulator for USB Powered Devices. The critical design parameter of this circuit is the circuit area. To solve this problem we can use Charge pump step-down circuit. This circuit only requires   the charge pump controller and  four ceramic capacitors. So it is a low cost circuit because […]

Power Factor Controller

This circuit is called power factor controller with universal input circuit. It has input range about 90 to 268Vac. Any standards of mains supply  in almost any country would be under that range. Maximum load of this power factor controller is 450W. The circuit shown  by the schematic diagram below : This is a simple […]

Constant Current Constant Voltage Switching Power Supply

This is a circuit that produces constant current constant voltage  SMPS. To efficiently charge a battery, we can use constant current constant voltage  SMPS. This circuit produces 600 mA at constant current mode and 7.2V at constant voltage mode. Here is the circuit: The operation of this circuit is simple, When the load impedance is […]

28V DC To 5V DC Switch-Mode Converter (Regulator)

This is a 28VDC to 5VDC switching converter circuit.  As a switch-mode voltage regulator, this circuit gives higher efficiency than linear regulator type. Using the National Semiconductor LM1575-5.0, this circuit can be used to convert 28VDC To 5VDC with efficiency of >80%. This circuit can be used as a 5V source @ 1A. Here is […]

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