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Why did you replace an emitter-follower pull up device with a 47K resistor? This is lm258c very large increase in output impedance, and introduces a phase shift and low pass filter into the second opamp’s feedback loop.
That means, according to my calibrated eye, the valley is about 25 microsecond wide. Posted by sarkarnov in forum: You need a slower Pwm frequency or a faster op amp.
LM258D PDF Datasheet浏览和下载
Feb 6, 2. Feb 16, 3. The datasheet says the slew rate is 0.
I have an original circuits as datashest Your name or email address: Can anyone tell me what this cable assy is for? I don’t know if this saturated and the top was cut since this is very big output gain. Thank you for your help. Looking at your o-scope output, my calibrated eye is fairly accurate and the datasheet is exactly right.
Posted by rezash in forum: Yes, my password is: Many of these devices are operated by non-tech-savvy users who may not know how to maintain their own device security.
LMD (MOTOROLA) PDF技术资料下载 LMD 供应信息 IC Datasheet 数据表 (1/8 页)
Also, what is the function of Q2 in this circuit? So, each valley is about 66 microSeconds apart at 15kHz. Feb 18, 4.
lm258c View attachment Figure 4 Modified circuit Here is the modified circuit output, which is not my expectation. That means 13 microSeconds going down and 13 microseconds going up.
Do you already have an account? LMD Datasheet is attached. Nov 23, 8, 6, View attachment Why does its output perform like this way, not dc voltage output?
So, let’s take 13 microseconds 0. No, create an account now. Can anyone tell me why the waveform is lean towards the back? The output was as follows.
LMD Datasheet PDF – Philips Electronics
You May Also Like: Note that low power devices are usually slow speed devices. Digital Signal Processing in Scilab: Quote of the day. After I modified the circuits, which Q1 was replaced with 47K resistor and I put diode between pin 7 and the base of Q3. Feb 16, 2. Feb 16, 1. Posted by gaya3eeee in forum: Aug 1, 7, 2, Posted by Faizan Ahmad in forum: View attachment Figure 3 flyback circuit provides power input for the circuit in Figure 2 When I measured the pin 7 output at its original circuit in Figure 1, its output is dc voltage around How does this happen?