DC power supply through what way to achieve the purpose of regulation
The other is a switching power supply, generally isolated and not isolated, they use a variety of voltage regulator, the common output voltage is sampled through the feedback circuit to control the pulse width of the switch to stabilize (PWM), there are Special way of using FM (resonant).
DC power supply is generally divided into two categories, one is linear regulator, the common is to use a three-tube voltage regulator tube, by changing the transistor base voltage to adjust the output voltage to achieve the regulator output Purpose, generally used in low-voltage regulator circuit, the transistor work loss is great, relatively serious heat, generally need a larger heat sink, due to the transistor limit, the output circuit is generally less than 5A, greater than the current need to adjust the tube in parallel.
