Ac-To-Dc Converter


Posted on Jan 6, 2013

By coupling two back-to-back diodes in series with an ac power circuit, a voltage of about 1.4 Vpp can be obtained. This


Ac-To-Dc Converter
Click here to download the full size of the above Circuit.

voltage is useful for exciting the primary coil of a small transformer. The voltage induced in the secondary coil can then be rectified and used to power solid-state control circuits. The forward-voltage drop of the diodes is inherently constant and stable over a wide range of ac-circuit power variations. The resulting voltage developed across the transformer windings is also free from variation that might be caused by changes in the circuit"s current or voltage. In the circuit, a lamp (LMP-1) is connected to the primary ac input line (Ll and L2) through a pair of inverse-parallel-connected power diodes (Dl and D2). As power flows to the lamp, a drop of about 0.7 V is alternatively developed across each of the diodes. This voltage feeds the primary of a small transformer (Tl). T1 can be a small 8- to 500- transistor radio output, etc. This will deliver about 11 Vpp across its secondary winding. LMP1 can be a small 120-V lamp of 5 to 25 W, etc.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    WAH & FUZZ Guitar circuits
    Powerful LED Flashlight circuit
    Rs232c-led-circuit
    enhanced 4 digit alarm
    Alarm Digital Clock-DS1307
    Simple FM Transmitter circuit schematic Long range short range using VMR6512 Hi-Fi Audio FM transmitter module
    NIXIE I NIXIE clock using six ZM1030 tubes
    The Hartley Oscillator
    Efficient Fan Speed Controller
    ADC0809 and PC bus interface circuit
    Scalable MAX610 output current power supply circuit b
    Level led level meter display driver IC a circuit diagram



    Top