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  1. Delta Prime

    Custom LED Lightbulb circuit

    I can't really tell you how to do such things without a schematic. You must learn how to read schematics. First you must learn basic electronics theory the components how they work how they interact with each other. The laws that govern them. I know your resources are limited and you are...
  2. Delta Prime

    How to make an opamp out of transistors?

    I know you're talking about operational amplifiers but for a matter of perspective! 16 years ago I was 12 years old,I'm 28 years old now. In 2007 Intel® Core™2 Quad processor for desktop PCs, as well as two additional quad￾core server processors claims more than 580 million transistors on a...
  3. Delta Prime

    Analogue Meters for Nostalgia Sake

    I imagine a scenario where the submarines would come up for air every nine months or so.... ;)
  4. Delta Prime

    How to build a millivolt signal conditioning circuit with compensation?

  5. Delta Prime

    Broken resistor and fuse in lab shaker's control panel

    Is this a medical laboratory? Those look like culture bags! They're usually flasks... anyway this is highly regulated; if you're in USA by the (NIH). National institute of health. You must contact the original manufacturer for repairs documentation is critical.
  6. Delta Prime

    JBL onbeat xtreme only works when warm.

    Yes. You have to imagine these things get dropped,kicked around. Things are going to wiggle loose.
  7. Delta Prime

    Absolute Pressure Sensor For SPL Metering

    Thank you for the quote. Darn it. I deleted that! I got to stop thinking out loud.
  8. Delta Prime

    Hobby audio player project noise problem

    Welcome to Maker Pro. :)This is all very new to me... Clarification please. Is this a prank? You designed it.
  9. Delta Prime

    Analogue Meters for Nostalgia Sake

    What is that? The Fighting Seabees? With tommy guns? I really love the rugged bakelite. There's a whole bunch of Simpson variants never really counted them all. These are just a few... 260-1, 260-2, 260-2A, 260-3, 260-3A 260-4, 260-4M, 260-5, 260-5A, 260-5M 260-5P, 260-6, 260-6M, 260-6PM...
  10. Delta Prime

    Analogue Meters for Nostalgia Sake

    That particular Simpson I use to make RMS measurements calculating the RMS conversion factor to scale and if it's so happens that the meter needle fluctuates I can estimate those errors, recognizing the scale more easily.It beats a fluctuating digit (In my not so humble opinion) when the digital...
  11. Delta Prime

    Analogue Meters for Nostalgia Sake

    I use this one, just as much as a digital multimeter. I got it at a yard sale 10 bucks in the box. Never leave home without it; there are certain things you can do with this meter you cannot do with the digital multimeter in the same class & price point!
  12. Delta Prime

    Absolute Pressure Sensor For SPL Metering

    Thank you for your service. :)
  13. Delta Prime

    How to build a millivolt signal conditioning circuit with compensation?

    I really don't know if that's just a statement or you wish help on this subject as well. But in any case I make it a point to stay away from arduino they say it's a teaching tool but it's not. if you want to make something you just copy it. This is a good read for all your future endeavors. And...
  14. Delta Prime

    How to build a millivolt signal conditioning circuit with compensation?

    Does not sound like homework to me and did not sound like homework to me. My post was deleted by the powers that be.... :mad: Just because two people agree does not make it right! Two people are wrong! Never one apology! I would use a 16-bit A/D converter you need higher resolution your...
  15. Delta Prime

    Electronically controlled flow control valve for air?

    A belated;Welcome to Maker Pro! :)
  16. Delta Prime

    Electronically controlled flow control valve for air?

    Here are some resources to point you in the right direction. https://www.wardsci.com/store/product/8891746/venturi-meter-demonstrator...
  17. Delta Prime

    Electronically controlled flow control valve for air?

    All that dial is doing in that medical grade oxygen blender is pinching a tube that's it. In conjunction with flow meters. You're about to get into physics it's called the Venturi effect. Fluid dynamics, differential air pressure. As it demonstration you can make your own. Notice in the diagram...
  18. Delta Prime

    Electronically controlled flow control valve for air?

    So you wish to recreate the photo Below. Use only as reference please. Terminology you need to know. In its simplest form. This basic information was and is available through the link I have provided you with, in your other thread. The "National institute of health" (NIH)...
  19. Delta Prime

    Fixed reading error in DT-9205A multimeter

    DT2907A came with the download for DT2905A
  20. Delta Prime

    How to find components with certain specifications

    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7547905/
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