hi friends,
plz help me in troubleshooting a problem in my circuit.I made a ultrasonic transmitter & receiver project.I couldnt find SL100 & SK100 transistors so instead of these i used A684 & C1383 transistors.When i energize transmitter & receiver circuits,the relay on receiver circuit switch on instead of receiving transmitted signal by transmitter.Plz held me in analyzing whats wrong with & circuit.
here the diagrams.
click here to enlarge schematic
plz help me in troubleshooting a problem in my circuit.I made a ultrasonic transmitter & receiver project.I couldnt find SL100 & SK100 transistors so instead of these i used A684 & C1383 transistors.When i energize transmitter & receiver circuits,the relay on receiver circuit switch on instead of receiving transmitted signal by transmitter.Plz held me in analyzing whats wrong with & circuit.
here the diagrams.
click here to enlarge schematic