Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Anyone help me to calculate the frequency of LM324 circuit

Status
Not open for further replies.

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:
324pwm_c.gif


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.
 

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
 

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.
 

IanP

Advanced Member level 5
Joined
Oct 5, 2004
Messages
7,942
Helped
2,309
Reputation
4,620
Reaction score
531
Trophy points
1,393
Location
West Coast
Activity points
66,435
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
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top