East Shi IDS-2000F STB switching power supply circuit

Posted on Dec 11, 2010

East Shi IDS-2000F STB switching power supply circuit East Shi IDS -2000F STB switching power supply circuit mainly by the AC input circuit, switching oscillation circuit, outp

East Shi IDS-2000F STB switching power supply circuit
Click here to download the full size of the above Circuit.

ut circuit and a secondary steady pressure control circuit and the like, as shown in Figure 2. 63. (1) AC input circuit AC input circuit is a switch S, fuse Fl, mutual inductance filter cl, LF1 and bridge rectifier circuit (VDI-VD4) and the like, its function is to filter the AC 220V input voltage and interference rectifier into a DC voltage of 300V, C2 to the smoothing capacitor. (2) switch and oscillation control circuit switches and the oscillation control circuit are integrated in Ul TEA1523P among the 30V DC via the switch of the primary winding of the transformer Ti O ~ to Ul foot power switch is integrated in Ul among the positive feedback winding ~ feet U1 provides power and positive feedback voltage to Ul access switch oscillation state. (3) secondary output circuit switching transformer Ti attack multiple sets of output level, the rectifier output +5 V, + 21 V, + 3V and +3.V voltages. (4) regulator circuit voltage regulator circuit connected to the output of + 5V, Rl4, R11 constitute a voltage divider circuit, U3 to error detection and error amplifier, it will error signal by the photoelectric coupling of feedback to Ul feet, of Ul oscillation output controlled.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    High speed sample and hold
    Doorbell Sound with CD4001 CD4060
    rf detector electronic project circuit design using 2n2222 transistors
    how to make digital voltmeter
    simple touch switch circuit
    Three-State Continuity Tester
    LM3886 amp electronic circuit project schematic circuit
    60 Watt Audio Power Amplifier
    Ford Thunderbird: air conditioning instrument panel blow resistor
    Quality Stereo Wireless Microphone or Audio Link
    Single Pentode Wien Bridge Oscillator
    AM radio circuit chip