I would like to create an annoying alarm generator through the use of LM358. I've tried to generate a square wave output using this circuit (http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/square.html) and the output connected to a capacitor before going to a 8ohm, 0.25W speaker. However, I am only able to hear a monotone output. Do I need a audio amplifier circuit?
However, I am only limited to a few analog components for my project which includes:
LM358
BJT
MOSFET
resistor
Capacitor
Diode
Desired annoying alarm tone link:
However, I am only limited to a few analog components for my project which includes:
LM358
BJT
MOSFET
resistor
Capacitor
Diode
Desired annoying alarm tone link: