2010年12月6日 · The datasheets for the LM324 quad opamp and LM358 dual opamp show a VCO circuit that goes from a very low frequency growl to a fairly high audio pitch. An MC34074 quad opamp (or MC34072 dual opamp) can be used instead in …

2011年8月29日 · i have downloaded LM324_unisym_test from yahoo groups **broken link removed**, and it is .asc file, when i click the icon it opens itself in LT spice and says "LM324 from National Semiconductor The LM324 is used with the universal symbol "opamp2" from the standard LTSPICE [Opamps] menue...

2006年3月25日 · The LM324 is the industry's first "low power" opamp so they made the output transistors without bias current. Therefore they produce horrible crossover distortion with audio signals unless you bias an output transistor with a DC load as a class-A amplifier.

2009年2月10日 · I admit that this thread title is just to get attention and suggestions from Audioguru, that hates LM324. :) I too hate LM324 but ... but it was a nice device at its times. A lot of years has been passed and now I think we have much better devices so I wanted to know some op-amp that have the...

2009年3月16日 · I once had a diagram to built a Voltage Control Oscillator out of a LM324. I dont found it anywhere. I try to google without luck. Anyone got a LM324 VCO circuit and shared it ? Thanks. I will like to built a small synth (music instrument) using such oscillator.

2010年5月26日 · So what are the big differences/similarities between LM324 and LF347 Op-amps? I just want to understand them a bit more, and it would be great if someone can help.

2009年7月9日 · I've been working on a circuit to control a 12vdc motor in both direction have had some problems with the circuit breaking into oscillations, I changed the design around and on my latest, a ramp signal was oscillating and it got worse with a capacitor and I finally killed it by adding a load...

2025年3月10日 · A pcb made according to the schematic (attached below) uses LM324 opamps. With no input signal to the current transformer pin 3 should be low, and pin 2 follows feedback from output pin 1 (high). Two of the opamps give 0.0V on their pin 1, but two opamps measure approx. 2.5V on their outputs...

2011年5月22日 · I've mostly worked with digital stuff, but I recently got one of Forrest Mim's books with op-amp circuits and constructed the "Sine Wave Oscillator" using an LM324 instead of an LM741.

2015年4月27日 · The LM324 s a very low cost Quad Op Amp, with BJT outputs that suffer from 2-3 V saturation near Vcc but low saturation from Vee rail. For full swing output a CMOS output which has much lower current capability so R's must be scaled accordingly well above 10k . i would stick with R>> 1k on the LM324 and compute all errors sources .