DS

The simplest example SMPS which still uses 3 transistors (C3807, A1015 and power transistors) classic problem that often occurs is: - Problem in the feedback circuit can cause the output voltage B + over so that it can endanger the aircraft as a whole. For example elco erupted, pcb burnt burnt by over-heated, horizontal transistor short. - Problem on feedback circuits may cause power regulator transistor is damaged due to over current transistor (eg, due to the 47k resistor transistor circuit on the secondary error detector value is delayed). - If the input ac voltage drops can cause the power regulator transistor is damaged, due to over current transistor If the secondary there is a power transistor short can cause damage over current regulator. - Protectors are designed to make the SMPS SMPS "reliable will not be damaged" if there are things that go wrong as mentioned above.  SMPS Circuit SMPS circuit using IC systems generally are designed with a surge protector, which inc...

Vertical Protectors (another term surge protector or Vertical CRT Neck Guard or protector) . If the vertical deflection does not work, then the raster will glow a horizontal line. This can cause the picture tube phosphor layer was destroyed by fire when the aircraft be kept alive in the long term. There are several types of system protectors, vertical relationships: Protector surge protector is connected with x-ray to the horizontal which will trigger the horizontal oscillator is not working Protectors gets connected to microcontrol that will trigger the "power off" so that the plane will turn off automatically or plane alive but raster becomes dark (brightnes level down). Vertical Protect The workings of the system-vertical surge protector that can be found there are several kinds: Using sampling pulses from vertical-out IC which is connected to  microcontrol  . If  microcontrol   not receive these pulses the surge protector will work. Using a sampling of...