dual power supply circuit


Posted on Feb 5, 2014

The circuit a series of Dual Power Supply, where the symmetrical ± 15V supply for linear circuits. The same principle applies to supplies of non-symmetrical, such as 5. 0 V and-12V regulators for applications such as registers. To ensure start up LM340 over full temperature range of the load sink current worst case 1. 0a germanium power diode  D1


dual power supply circuit
Click here to download the full size of the above Circuit.

was added to the circuit. Since the forward voltage drop of the germanium diode D1 is less than that of the silicon substrate diode of the LM340 the external diode will take any fault current and allow the LM340 to start up even into a negative voltage load. D1 and silicon diode D2 also protect the regulator outputs from in advertent shorts between outputs and to ground. For shorts between outputs the voltage difference between either input and the opposite regulator output should not exceed the maximum rating of the device. Here is a schematic drawing:




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    2x10 LED VU Stereo Meter
    Temperature controller
    Voltage Regulators
    Security / Automation Sensors using Arduino
    laser asc
    4 transistor 500mw fm transmitter
    MAX786 TEA5711T Application Circuit
    Monostable 555 Multivibrator Working Principle and Circuit diagram with Animation
    Telephone call meter using calculator & COB
    Transformerless 5 Volt Power Supply circuit
    Mitsubishi: I am putting a hydraulic thumb on my excavator heads
    ac POWER MONITOR
    1880MHz internal bias circuit diagram of the amplifier application collector RF2324



    Top