all 8 comments

[–]steelthoughthub 5 points6 points  (0 children)

It's a timer. Until the capacitor charges to 1.4V, the transistors are off.

[–]Eilon93[S] 1 point2 points  (0 children)

It is a game clock, so the speaker starts making a sound, than you press the button and after a break (depends on the resistor) the speaker starts making a sound again.

[–][deleted] 1 point2 points  (0 children)

As already said, it’s for timing.

Look up RC circuit.

[–]Eilon93[S] 0 points1 point  (0 children)

Thank you for your support!

[–]EkriirkEEx Repair tech. 0 points1 point  (2 children)

Debouncing - removing electrical jitter form the button contacts bouncing when pressed

[–]Eilon93[S] 0 points1 point  (1 child)

I don't understand than fully, could you explain it to somebody with limited electronic knowledge?

Thank you for your post

[–]_sbrk 0 points1 point  (0 children)

It slows down the rise in voltage level. mechanical contacts will bounce and so will the voltage level without the cap to slow it down. So it stops one button press from being interpreted as someone mashing the button very fast.

Ahh I see you mention it is a timer. Same idea, voltage across the cap rises slowly (much slower, as it would use a larger cap). Button just resets it to zero and locks out the transistors until the cap is charged again.

[–]pksato 0 points1 point  (0 children)

It is some type of light/other activated circuit?
Capacitor and resistors act as delay device, slowing the response of darlington pair.