rajkot

Tuesday, April 20, 2010

SIGNAL TRACER CIRCUIT

  1. A high gain amplifier circuit that can be operated from a battery pack of 6 or 9 volt battery pack is shown here.
  2. The IC1 uA 741 is wired as a high gain non-inverting amplifier and its output is amplified by a pair of complementary transistors (Q1 & Q2) to drive the speaker.The negative feedback from the common emitter junction of the two transistor stabilizes the gain of the circuit.
  3. The resulting audio output is sufficient to serve as a signal tracer. 

       NOTES:
  • Assemble the circuit on a  good quality PCB or  common board .
  • The POT R6 can be used as a volume controller.
  • The circuit can be powered from a 6 or 9V DC battery pack.
  • The IC1 must be mounted an an IC base.
  • All capacitors must be rated at least 15V.

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