부산대학교 도서관

In general, there are many multivibrator circuits, but the most popular and discussed is the transient balanced multivibrator circuit. She is usually depicted this way. For example, I melted this multivibrator flasher somewhere from upgraded parts a year ago, and as you can see, it flashes. Clumsy wiring on the prototype board also blinks. The voltage across the transistor rises to nearly the voltage of the power supply and then drops to zero. This suggests that the transistors in this circuit are operating in a key mode. A transistorized multivibrator is a square wave generator and an oscillogram of a symmetrical multiple vibrations. A symmetrical multivibrator generates rectangular pulses with two duty cycles. Read more about duty cycle in the article Frequency Generator. Let's use the working principle of symmetric multivibrator to drive LEDs. The values of the collector resistors are insignificant, but they affect the frequency of the multivibrator. This is complete nonsense! In the correct calculation of the multivibrator, the deviation of the values of these resistors from the calculated one by more than five times will not change the frequency of the multivibrator. The main thing is that their resistance should be lower than the base resistors because the collector resistors provide faster charging of the capacitors.