Circuit Project Electronic

That be On After Delay Circuit. I uses mosfet in the circuit for delay easy more than the transistor. By have the work of the circuit be when press , S1 , an electric bell will not loud suddenly , must wait for follow the period of time that note. [...]

This circuit gives sound handful that modifies interestedly, occurrence sound rate cricket
Fixed. By R3 should experience change the value C1,R5 and C2 effective that differently. A loudspeaker that use should is model Piezo Tweeter. The Transistor use get many the number. but that use Q1,Q2 be 2N4891 numbers or [...]

This be Simple Siren Circuit that build easily. Because of use the transistor 2 pcs only just. Can use 8 ohm size loudspeakers. Which , I uses old loudspeaker , at the sound doesn’t Amen! come to usable with this comfortable circuit. The usability just you presses switch (close) S1 [...]