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Showing posts from April, 2018

Cell phone detector or EMF detector circuit

It is a very simple cellphone detector circuit designed using IC LM 324 op-amp

it can also detect EMF ( Electromagnetic Frequency )

Parts list -

IC lm 324 ( 14pin)1k - 3 pcs resistor470k resistor10k presetDiode IN4148 - 2 pcsBC548b transistor470pf ceramic capacitorVeroboard or Breadboardwire9v battery                                                                   Transistor & IC pins

                                                 Circuit diagram of emf detector
The circuit on vero board

                                                        Project making video