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  1. bertus

    help with IR2110 chips

    Hello, Here is some more info, including where to place them: http://bordodynov.ltwiki.org/ Bertus
  2. bertus

    help with IR2110 chips

    Hello, The LTWiki has some extra libraries for LTSpice: https://ltwiki.org/?title=Components_Library_and_Circuits The Bordodynov library is quit big with a lot of extras. It is shown here as the ZZZ folder: Bertus
  3. bertus

    help with IR2110 chips

    Hello, I have "compacted" the thread by merging posts from the same user. @Maglatron , you have the possibility to add info to a post by editing the post. As far as I know you will have 24 hours to edit a post. Bertus
  4. bertus

    Triac Question

    hello it could well be that the left one is a chinese counterfit. the surface looks scraped and bad quality printing on it. bertus
  5. bertus

    Removing Components for Testing versus On Board Testing

    Hello, If you want a more srious book, have a look at this one: https://archive.org/details/mgr-30062023-basic-beee/mode/2up Or this one: https://archive.org/details/basicelectronics_202003/mode/2up Bertus
  6. bertus

    Trying to identify what these are

    Hello, Here is some more info on those electret microphones. An article on Electret Microphones - Powering & Uses: https://sound-au.com/articles/mic-electret.htm And a project for Recording and Measurement Microphones: https://sound-au.com/project93.htm Bertus
  7. bertus

    Removing Components for Testing versus On Board Testing

    Hello, You can download the book @Martaine2005 mentioned here: https://archive.org/details/ElectronicsForDummies/Electronics%20for%20Dummies/ Bertus
  8. bertus

    Speakers and Bass Frequencies

    Hello, A lot of informarion on loudspeakers can be found on ESP: https://sound-au.com/articles/index.htm#loud Bertus
  9. bertus

    Learning Electronics for Everyday Practical Reasons Non-Professional

    Hello As for electronics troubleshootong and repairs, have a look at the following resource: https://maker.pro/forums/resources/troubleshooting-and-repair-info-pages.68/ Bertus
  10. bertus

    Not sure where to put this question

    Hello Here is an other page on AAC: https://forum.allaboutcircuits.com/threads/decoupling-or-bypass-capacitors-why.45583/ bertus
  11. bertus

    help (connecting projector to powerbank)

    Hello, Did you check the polarity of the battery and projector? When the wrong polarity is connected bad things will happen. Bertus
  12. bertus

    Capacitor type in low pass filter

    Hello, You will find a lot of information on capacitors on the CapSite: http://www.iequalscdvdt.com/ Bertus
  13. bertus

    AC to ADC design question

    Hello, An opamp that has no negative powersupply can not have a negative output. Have a look at this circuit from the AAC eBook: This text comes from the following page with more info: https://www.allaboutcircuits.com/textbook/semiconductors/chpt-8/averager-summer-circuits/ Bertus
  14. bertus

    Slow down AC fan speed

    Hello, That is a TRIAC based circuit like the light dimmer that crutshow mentioned. It will work, but introduce harmonics and possible a buzz in the motor. Bertus
  15. bertus

    Opamp Filter circuit

    Hello, Looking at the V(vopamp) the signal seems to rise a bit. When you would have a longer timescale, it will show more if the rising. The rising will likely be faster when you lower the value of C1. Bertus
  16. bertus

    Slow down AC fan speed

    Hello, I do not think that PWM will work for an AC motor. Bertus
  17. bertus

    Current Flow

    Hello, The led will have a voltage drop of 1.5 Volts to 3.8 Volts depending on the color. The B-E voltage of a silicium transistor will be about 0.7 Volts, so the led will go off, as there is not enough voltage drop. Bertus
  18. bertus

    Oscilloscope always showing Sine Wave

    Hello, Perhaps the attached PDF will give you some guidelines for the use of an oscilloscope. Bertus
  19. bertus

    Question about op amp dual supply circuit...

    Hello, The 22 uF capacitor at the potmeter will slow down the setting of the output voltage. I have seen simelar circuits where only 0.1 uF is used on the potmeter (as noise reduction from the powersupply). Bertus
  20. bertus

    Question about op amp dual supply circuit...

    Hello, Perhaps it is an idea to start reading the books of the All About Circuits site for the electronics basics: https://www.allaboutcircuits.com/textbook/ I already downloaded them and attached them to this post. Bertus
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