Positive voltage to negative voltage converter


Posted on Feb 6, 2014

This circuit diagram shows how to obtain a negative voltage from a positive voltage supply. Another advantage of this circuit is that, the negative voltage together with the original positive supply can be used to simulate a dual supply. The circuit is based on timer IC NE555. The NE555 is wired as an astable multivibrator operating at around 1 KH


Positive voltage to negative voltage converter
Click here to download the full size of the above Circuit.

z. The square wave output if available at pin no 3 of the IC. During the positive half of the square wave, capacitor C3 charges through diode D2. When the output of IC is at zero the C3 discharges through diode D2 and the capacitor C4 gets charged. As a result of this the voltage at the junction of the anode of D1 and cathode of C4 will be always negative with respect to the ground.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Circuit Magic
    Components Tester with AT89C52
    serial LCD interface for PIC
    USB powered LED
    Guitar Crash Sync effect
    Noise-producing sound effects using NE555
    gas leakage alarm
    irbot
    Greenhouse Heater Temperature Control Project
    Laptop Protector
    Voltage Controlled PWM Generator
    DIY 12v Dimmable Power Compact Driver
    Ultrasonic distance finder circuit



    Top