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INDEX |
MY EXPERIENCE IN AUTONOMOUS ROBOTICS | |
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555 Astable
Multivibrator Astable Multivibrator contd. Astable Multivibrator contd. Astable Multivibrator contd. 50% duty cycle circuit Troubleshooting 555 circuits
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TROUBLESHOOTING IC555 1. In astable mulitvibrator first see you have short circuited pin2 and pin6. 2. See the voltage of at pin8 3. See the voltage at pin 7 and pin 5 and pin 4 and LED should glow 4. The only way to test 555 is by astable multivibrator with F=1Hz so that you can see. In this case Rb>Ra to make OFF time and ON time to be close which make things clear. 5. First test this, then only connect the circuit. i.e, first test IC555 before making 38Khz wave.
See this circuit and tell about the timings. Try to do
yourself. |
