Switching Power Supplies

Product Description

Switching Power Supplies

During the latest years the switching power supplies technology has been significantly developed due to the features of smaller size and higher efficiency of these power supplies when compared to the traditional ones. This board is basically composed of two sections:

1. A BJTbased fly back power supply, with output voltage adjustable from 12V to 18V by means of a potentiometer and rated current 0.5A
2. A MOSFETbased feedforward power supply, with output voltage adjustable from 15V to 18V by means of a potentiometer and rated current 0.5A

Both power supplies are provided with a current limiting circuit and with a shutdown device to switch off the voltage from the load without deactivating the power supplies control circuits. This board also includes resistive loads of different values for the detection of the output characteristics. The board is supplied complete with a set of stackable, plugin cables of suitable lengths and colours and with a training manual.

Power supply: 24Vac, 1A, 50/60Hz.

Experiments of Switching Power Supplies

1. Analysis of the operation of a fly back power supply
2. Analysis of the operation of a feedforward power supply
3. Regulation of the output voltage as a function of the load or of the input voltage
4. Limitation characteristics
5. Detection of the typical parameters of the power supplies (ripple voltage, efficiency, etc.)