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  1. bertus

    How can I fix an unformattable raw micro SD card?

    Hello, The microwave oven is a perfect way for permanent distruction of the SD card It will be unusable in any way Bertus
  2. bertus

    And now something weird

    Young man playing over 100 musical instruments
  3. bertus

    Boosting the Amper and altering the frequency

    Hello, I most times use a paint-like ( KolourPaint on linux, http://www.kolourpaint.org/screenshots.html ) program to draw my schematics. I use the following template and use copy - paste for placing the parts: Bertus
  4. bertus

    Best op-amp for audio use?

    Hello, Here is a page with a list of 2017 for "good" opamps: https://www.cycfi.com/projects/six-pack/op-amp-shootout/ Bertus
  5. bertus

    Oscilloscope Anomaly

    Hello, When you want to measure the AC and DC at the same time, probably D2 gets shorted. ( I assume you use the bottom red line as ground.) Bertus
  6. bertus

    AK8963C iPhone 6 compass PCB

    Hello, Could it be there are problems with the balls for soldering? The AK8963N has all connections on the side and is slightly bigger to handle: Bertus
  7. bertus

    AK8963C iPhone 6 compass PCB

    Hello, Pages 33 and 34 of the datasheet show capacitors on the VID and VDD lines. When they are connected together as VID may be equal to VDD, I would think that even one capacitor would do. Bertus
  8. bertus

    Perpetual moving sticks

    Hello, The SY3501 seems to be some kind of battery charging controller. This chinese site shows the connections; https://max.book118.com/html/2018/1021/5324234313001322.shtm Bertus
  9. bertus

    sherwood ra-1140

    Hello, The closest manual to find online is for the RA1145: https://elektrotanya.com/sherwood_ra-1145r.pdf/download.html Bertus
  10. bertus

    Remington Shaver HC6550 not to full Power

    Hello, A DMM (Digital Multi Meter) might give you a better resolution than an analog meter. Bertus
  11. bertus

    Random digital potentiometer driving

    Hello, @bigkim100 , I think that some of the responders in this thread are older than you. I am 62 and more than 50 years busy with electronics. Bertus
  12. bertus

    Random digital potentiometer driving

    Hello, Have a look at this page for a random voltage generator: https://wiki.analog.com/university/courses/alm1k/alm-signals-labs/alm-lfsr-lab There are several resistor networks available. Bertus
  13. bertus

    Random digital potentiometer driving

    Hello, What would be the voltage range needed? Bertus
  14. bertus

    Multiple LED Driving

    Hello, Have a look at the attached OSRAM application note on parallelling leds. Bertus
  15. bertus

    Multiple LED Driving

    Hello, You can find a lot of information on leds on AllAboutCircuits in the following thread: https://forum.allaboutcircuits.com/threads/leds-555s-flashers-and-light-chasers.19075/ Bertus
  16. bertus

    Vangelis has gone

    Hello, The composer vangelis has died on may 17th https://en.wikipedia.org/wiki/Vangelis Bertus
  17. bertus

    Hameg HM8122 frequency/counter

    Hello, I can not find a service manual. The user manual can be found here: https://elektrotanya.com/hameg_hm8122_universal_counter_um.pdf/download.html There is a partlist on page 41 of that manual. Bertus
  18. bertus

    Book Reviews

    Hello, The internet archive has also a collection of "community texts": https://archive.org/details/opensource?query=electronics&sort=-publicdate Almost every day new books are added. There is also the Folkscanomy Electronics: Books on Electronics, Circuits and Processors...
  19. bertus

    Random digital potentiometer driving

    Hello, What is your intention withe the digital potmeter? Do you want to create a random voltage? Do you want to create a random amplitude of an incoming signal? Bertus
  20. bertus

    Random digital potentiometer driving

    Hello, @CircutScoper , Direct linking to the wiki does not work. The forum shows broken images. Here is the complete article from the wiki: https://en.wikipedia.org/wiki/Linear-feedback_shift_register Bertus
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