Posted on Feb 6, 2014

The Hartley oscillator is an LC electronic oscillator that derives its feedback from a tapped coil in parallel with a capacitor (the tank circuit). Although there is no requirement for there to be mutual coupling between the two coil segments, the circuit is usually implemented as such. A Hartley oscillator is essentially any configuration that us

Click here to download the full size of the above Circuit.

es a pair of series-connected coils and a single capacitor. In the oscillator, the feedback voltage is developed by the inductive voltage divider, L1 & L2. Since the output voltage appears across L1 and the feedback voltage across L2, the feedback fraction is As usual, the loading effect of the base is ignored. For oscillations to start, the voltage gain must be greater than 1/ ². The frequency of oscillation is given by

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    PIC Programmer schematic RS232
    strobe light controller
    remote control for electrical
    central locking interface
    Triangle Wave Oscillator
    1929 MOPA 80 meter transmitter using a pair of 27 triodes to an 865 tetrode
    Battery status indicator circuit diagram
    Birds singing analog signal generator circuit