TH5141EX - Power supply for switching with a fixed-width monitor. - Google Patents

Abstract

In the switching power supply (20) for the DVR monitor, the primary winding (P) of the transformer (T1) is connected to the chopper switch (Q1) and to the switching voltage converter. From the source (26) to the direct power, there is a control circuit (29) that is used to adjust the chopper switch operation (Q1). The B + voltage of the transverse control circuit on the screen (40) is obtained from the secondary winding. The first (S3) and is a circuit that is electrically separated from the primary (P) coil.The voltage (V1) for the audio sector circuit (30) is obtained from the second secondary winding (S1), which is also isolated in a way. The electrical circuit is exited from the primary (P), the first set of reducing coil (FB2), is connected in an electromagnetic circuit with the first secondary (S3) and is closely spaced. And the two sets of reverse voltage input (FBI) coils are connected in an electromagnetic circuit with two secondary coils (S1) and are in close proximity to each other. And such coils generate feedback voltages FB2, FB1.This feedback voltages are proportional together (in R1) and fed to the circuit regulator (29) to adjust the chopper switch (Q1) in The axis that controls the pressure in the secondary winding. And control the width of the screen to be constant When there is a change in the power draw in the audio sector

Claims (1)

1. The switching power supply for the DVR monitor device, which consists of the power source, the transformer, the switch output section connected to the transformer first winding. And fit into the said energy source The control circuit on the DVR's monitor, which is connected as a circuit, draws the first power supply to the second coil of the said transformer, and draws power from that power source to form a strip on the monitor. The first set of reverse voltage input windings of such transformers at