Timeline for Help understanding how to use a SG3525
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
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| Feb 15, 2018 at 14:34 | vote | accept | Joris | ||
| Feb 14, 2018 at 22:27 | comment | added | user16324 | How that part works : if you need gain, or frequency response shaping, you add resistors and capacitors around pins 1,2 and 9, to form any one of a number of standard "opamp" circuits. The simplest one, voltage follower = unity gain buffer, shown here. Any text on opamps will show others. | |
| Feb 14, 2018 at 20:20 | comment | added | Joris | Sorry, I missed the top left part of the last diagram. It's still not 100% clear to me how that part works, due to my lack of basic understanding I guess, but I'll try figuring it out now. Thanks again for your time. | |
| Feb 14, 2018 at 19:42 | history | edited | G36 | CC BY-SA 3.0 |
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| Feb 14, 2018 at 19:31 | history | edited | G36 | CC BY-SA 3.0 |
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| Feb 14, 2018 at 17:25 | comment | added | G36 | The pin 9 is the input for PWM comparator and also the output of error amplifier. And if we connect pin 1 to pin 9 the error amplifier will work as a voltage follower. The voltage at pin 9 will look like the voltage at pin 2. And voltage at pin 2 is a DC voltage which has an effect on PWM. | |
| Feb 14, 2018 at 17:05 | comment | added | Joris | Maybe I expressed myself incorrectly. The output of pin 9 is fed into pin 1, right? But what does the signal coming out of pin 9 look like? | |
| Feb 14, 2018 at 16:58 | comment | added | G36 | pin 9 is a PWM comparator input (Error signal) in my diagram. | |
| Feb 14, 2018 at 16:56 | comment | added | Joris | Wow, that explains a lot! Thank you very much. One more question. What exactly is the output of pin 9? | |
| Feb 14, 2018 at 16:49 | history | edited | G36 | CC BY-SA 3.0 |
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| Feb 14, 2018 at 16:43 | history | answered | G36 | CC BY-SA 3.0 |