LM3909 bassed Continuity tester circuit diagram



A very simple continuity tester electronic project can be designed using the LM3909 LED flasher integrated circuit .

This continuity tester project , require few external electronic parts and can be used for testing continuity of coils and cables .
This continuity tester project must be powered from a 1.5 volt DC power supply , you can use a 1.5 volts battery cell .

The C1 capacitor must have a value of 10uF an R1 resistor must a have a value of 1kohms . Speaker used for this project can be a small 8 ohms impedance speaker .
Simple electronic continuity tester project circuit using LM3909 IC
If you want to report any meterial please