In electronics it is sometimes required to have a signal that consistently creates a continuous pulse (like the second hand on a clock which ticks every second). Examples of where this would be useful would include:

  • Digital clock (to track time)
  • Computers (the CPU needs to be triggered by pulses)
  • Most digital systems (usually require a central clock that synchronises all parts)

A circuit which produces a pulse every so often is called an oscillator. Once powered, an oscillators output will turn on and then turn off. Once this cycle has been completed it repeats itself indefinitely (so long as there is power). But how is an oscillator made? How do you get some components to keep on pulsing? In this kit you will be creating a two transistor oscillator which uses two transistors and a few other components to create a oscillator that generates a few pulses every second so that it flashes (that is why it is called a flasher).


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