Circuit Audio and RF Signal Investigator LM386
The Investigator of the audio signal and RF, also known as Signal Tracer is a tool that can not miss on the bench interested in audio equipment, amplifiers either in assembly or maintenance of audio equipment. Even with simple construction, it is quite necessary to detect defects more quickly.
As a follower of the audio signal and RF, can make maintenance of equipment such as amplifiers, preamplifiers, radios, car audio, transmitters, recorders, televisions and more. The basic operation is to follow the audio signal to a point where it is not available or is undergoing any change should not occur.
Resistor’s 1/4 Watt 5%
R1 470K – Yellow, Violet, Yellow, Gold
R2 10 – Brown, Black, Black, Gold
Capacitors
C1,C6 470µF/25V – Electrolytic Capacitor
C2 100nF – Ceramic capacitor
C3, C5, C8 10µF / 25V – Electrolytic Capacitor
C4 270pF – Ceramic capacitor
C7 47nF – Polyester or Ceramic Capacitor
Semiconductors
D1 1N4004 or equivalent – silicon diode rectifier
D2 1n34or equivalent – Germanium Diode
IC1 LM386N-1 – Integrated circuit audio amplifier – Dil8
Connectors
IN Connector for RF or Audio signal input
OUT Connector for speaker
Miscellaneous
DC_9V Jack to power, connect the external power supply
P1 47K – potentiometer
BAT 9V Volt battery
S1 Key to switch between AF and RF
Solder, wire, PCI, Cash, end of tests, etc..