positive negative probe with ic 555

Posted on Feb 5, 2014

With this circuit you can can check that which dot of the circuit is Positive Volt or Negative Volt which. This cheap circuit uses the a little component is will appropriate apply with an automobile or motorcycle. This circuit works during Voltage between 5-15V. When build volt supply of circuit LED 2 pcs. of stick bright but enough check meet Pos

positive negative probe with ic 555
Click here to download the full size of the above Circuit.

itive Volt make at pin 3 of IC 555 liberate Negative volt come out cause Red LED stick bright next but Green LED switch off down replace. But when check meet Negative Volt make Red LED switch off but Green LED stick bright replace yes. The Diode 1N4002 be formed protect turning pole electricity over. The detail is other, see in the circuit please sir.

Leave Comment

characters left:

Apraj   Apr 16, 2020

If the + pulse on probe, output is + or - ?

Related Circuits

  • New Circuits



    Popular Circuits

    Modular Burglar Alarm
    Tachometer circuit
    How I built a shortwave Armstrong FET regenerative receiver
    USB As A Power Source
    Arduino UNO Tutorial Rotary Encoder
    4-Bit Analogue to Digital Converter
    Traffic Lights For Model Cars Or Model Railways
    Flash ADC
    Four output configuration output 5V LM2641 3A 3.3V 4A 12V 0.3A and 5V 0.025A