inductance meter adapter circuit

Posted on Feb 6, 2014

This is a design circuit for measure inductance of the inductor labeled LX which is the inductance to be measured. The o/p of the circuit is a TTL square wave whose frequency relates to the inductance being measured. The inductance meter adapter output is connected to a frequency meter and the inductance is calculated from the frequency. This is t

inductance meter adapter circuit
Click here to download the full size of the above Circuit.

he figure of the circuit; The center operate of the circuit is the buffer colpitts oscillator(the first stage) which resonates with the unknown inductance to give a Sine wave of a particular frequency. The frequency of the sine wave is a function of the unknown inductance and the four 1000pF capacitors. The output sine wave is amplified by the second transistor and is then rectified by the capacitor and diode combination that follows. The rectified sine wave now having only positive excursions is buffered by the third transistor and is then fed to the 74ls393. Counter IC which is configured as a divide by 256 counter. The output of the IC pin 6 and ground is connected to the frequency meter.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    ESD Testing for RS232 Interface Circuits
    Timer LM555 Circuits
    Tiny RC Cars - Transmitter and Charger
    500W low cost 12V to 220V inverter
    How to make a Simple Infra Red Remote Control Circuit
    Avr32 Uc3b Schematic Checklist
    Consisting of a plurality of parallel MOSFET high current output linear regulator circuit MIC5158
    One of the battery discharge protection circuit