Learn About Multivibrators and Flasher Circuits: A Step-by-Step Explanation

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SUMMARY

This discussion centers on understanding astable multivibrators and flasher circuits, specifically referencing a circuit diagram from Wild Bohemian Electronics. The user seeks clarity on how current flows through capacitors and transistors in the circuit. The astable multivibrator operates by charging and discharging capacitors, which control the saturation of transistors, ultimately affecting LED behavior. The user is advised to consult Wikipedia for a comprehensive explanation of multivibrators.

PREREQUISITES
  • Basic knowledge of electronic components such as capacitors and transistors.
  • Understanding of circuit diagrams and their symbols.
  • Familiarity with the concept of current flow in electrical circuits.
  • Knowledge of multivibrator types, specifically astable multivibrators.
NEXT STEPS
  • Study the operation of astable multivibrators in detail.
  • Learn about the role of resistors in transistor base circuits.
  • Explore practical applications of flasher circuits in electronics.
  • Review the principles of charging and discharging capacitors in circuits.
USEFUL FOR

Electronics students, hobbyists, and anyone interested in understanding multivibrators and flasher circuits for practical applications in electronic projects.

mishobg12
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Hi,
please, help me understand this circuit that is drawn here: http://wild-bohemian.com/electronics/flasher.html

I have learned about miltivibrators (which is what I believe this is) in my electronics classes but never really understood them.

I tried understanding it myself - as the current flows trough the path of least resistance, it will flow trough the capacitors first, charging them, and then saturates the transistors, thus unlocking its way to ground trough their collector and emitter and then the capacitors will uncharge, desaturating the transistors and then back to start, but this will keep the leds always on and the bigger resistors going to the bases will not be needed. So, I am wrong.

Please, explain it in simple steps. Thank you :)
 
Engineering news on Phys.org
Try typing "multivibrator" into Wikipedia. There's an excellent explanation there. What you have is called an "astable" multivibrator.
 

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