Dec 16, 2005 #1 L lick_man Newbie level 2 Joined Dec 16, 2005 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,298 lm324 circuit This circuit here: On pin 1 there is a square wave on pin 10 there is a sawtooth wave they are the same frequency. But I can't calculate. I need a help.
lm324 circuit This circuit here: On pin 1 there is a square wave on pin 10 there is a sawtooth wave they are the same frequency. But I can't calculate. I need a help.
Dec 16, 2005 #2 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 lm324 circuits Use this simplified formula for triangle/square wave generator based on 2 opamps: f=1/ (2 *R*C) (see example at: https://www.electronics-lab.com/projects/test/010/ ) In your case R=R3, C=C1 .. and f≈270Hz Regards, IanP
lm324 circuits Use this simplified formula for triangle/square wave generator based on 2 opamps: f=1/ (2 *R*C) (see example at: https://www.electronics-lab.com/projects/test/010/ ) In your case R=R3, C=C1 .. and f≈270Hz Regards, IanP
Dec 16, 2005 #3 L lick_man Newbie level 2 Joined Dec 16, 2005 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,298 lm324n wave generator thanks IanP but could you tell me how to have this fomula? by expression. Thanks so much
lm324n wave generator thanks IanP but could you tell me how to have this fomula? by expression. Thanks so much
Dec 16, 2005 #4 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 lm324n circuits This formula applies only for rough estimation and is valid with certain assumptions .. If you, however, need exact equations goto this site: http://www.ecircuitcenter.com/Circuits/op_tri_gen/op_tri_gen.htm Regards, IanP
lm324n circuits This formula applies only for rough estimation and is valid with certain assumptions .. If you, however, need exact equations goto this site: http://www.ecircuitcenter.com/Circuits/op_tri_gen/op_tri_gen.htm Regards, IanP
Dec 17, 2005 #5 contagiouseddie Member level 2 Joined May 10, 2004 Messages 51 Helped 8 Reputation 16 Reaction score 5 Trophy points 1,288 Activity points 490 lm324 IanP May I know what is the function of this circuit. I have used LM324 in my circuits before but never came across this circuit configuration. Thanks you in advance.
lm324 IanP May I know what is the function of this circuit. I have used LM324 in my circuits before but never came across this circuit configuration. Thanks you in advance.
Dec 17, 2005 #6 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 lm324 pwm circuits U1A + U1B --> triangle wave generator .. Output of U1C (comparator) is PWM (pulse width modulated) wave; in this case it is speed controller of a fan .. Regards, IanP
lm324 pwm circuits U1A + U1B --> triangle wave generator .. Output of U1C (comparator) is PWM (pulse width modulated) wave; in this case it is speed controller of a fan .. Regards, IanP