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  1. Delta Prime

    How to Reduce Noise When Measuring 20MHz Frequency Using Relay

    If you’re making a test machine for testing, what are you testing? You gave us frequency and that’s it! What is the voltage amplitude what type of waveform at 20 MHz? what type of probes are you using?. have you read the instruction manual?
  2. Delta Prime

    Are there still applications for AM DSB-SC system?

    To the moderators who deleted my post! You might as well delete said Quote as well! You don’t tidy up very well do you? After all, everyone learned something of this thread.
  3. Delta Prime

    Are there still applications for AM DSB-SC system?

    I recognize the importance of an electronic schematic. A schematic says more than anything else, in an electronic circuit. Generally speaking; at minimum I wind up being as precise as I need to be, or at maximum as precise, as I can be…
  4. Delta Prime

    pinouts

    That is dependent on manufacture, package style, power requirements. SCR’s conduct current in One Direction Triac’s conduct current in two directions or bidirectional. They are both members of the “Thyristor” family. You have to obtain a data sheet for a particular component...
  5. Delta Prime

    I need help to identify this Thermistor and find replacement

    You’re welcome, prematurely. Unsolder that thermistor. I think I see writing on it. Take a photo of both sides. While unsoldered get your multimeter out, measure the resistance note that resistance then take a hairdryer pointed towards the thermistor if the resistance decreases while heated, it...
  6. Delta Prime

    Are there still applications for AM DSB-SC system?

    Speak for yourself human or ugly bags of water. Post your schematic!
  7. Delta Prime

    Fixing the Circuit for a DC Motor with Rechargeable battery?

    I believe you, but it’s not that simple! I’m speaking only about myself and my capabilities. My response to you was in general as it cover every possible topic, but obviously is not effective. The only thing you have to go by is your observations which are very keen, but I have no use to others...
  8. Delta Prime

    LiFePo4 100 AH battery charger

    OK! Short for Zero Kelvin(OK). That is when molecules of any kind stop vibrating! Marshall, your thoughts and re-ask the question! I remember you;you seem to be confused even now, you can’t make stuff up as you go along because you get called out. I’m calling you out & right now @ahsrabrifat...
  9. Delta Prime

    Are there still applications for AM DSB-SC system?

    You guessed wrong! Aren’t you the one while working on your thesis in (1979),you had the idea (it was before the last one) to recover the original audio amplitude by inverting the demodulated one at the appropriate crossover points of the DSB-SC. What a joke! Empirically you are a troll. :mad:
  10. Delta Prime

    Presentacion y Aportación.

    Do you mean(BCD) Binary Coded Decimal?
  11. Delta Prime

    Help Modifying Constant Current LED Driver from 700mA to 400mA

    :cool:
  12. Delta Prime

    Wharfedale WH-D8 active Subwoofer repair

    If you have a schematic of the circuit, you wish to understand, I could tell you why? & or why not!:)
  13. Delta Prime

    Fixing the Circuit for a DC Motor with Rechargeable battery?

    And if there is a fault that we could pinpoint in your charger for a particular component that is easily replaceable and found on the Internet can you solder and solder that component? I only ask because of the questions you ask. Some of us give a educated guess given the information available...
  14. Delta Prime

    Fixing the Circuit for a DC Motor with Rechargeable battery?

    Next time start with that! Post your two circuit schematics Please…
  15. Delta Prime

    Component acquisition for hobbyists?

    The hookah smoking caterpillar says; “if you like to go chasing rabbits!” https://maker.pro/forums/threads/and-now-something-weird.293263/post-1858225
  16. Delta Prime

    Fixing the Circuit for a DC Motor with Rechargeable battery?

    A single NiMH cell has a (nominal) or Standard Voltage of 1.2v.If you connect or stack, three cells in series, you get a battery pack with the nominal voltage of 3.6v & a maximum voltage of 4.5v. How old are your batteries? There are specific techniques of charging stages when charging a Nickel...
  17. Delta Prime

    Wanted: anti-static storage foam

    There will be no resistance; you shall be assimilated. The revolution has begun. Resistance is futile…
  18. Delta Prime

    First resonate a short antenna, then impedance match it ?

    As an undergraduate student, I beg to differ… Your posts here on Maker Pro. Your style of conveying information offers a different approach to attack a complex circuit, that I have never considered before. Thank you for that!
  19. Delta Prime

    8 Note Electronic Organ (how a "practice" kit can turn into a real project)

    Better than any toy I have seen on Amazon, outstanding! :) DC power supply inputs should be well-isolated (as fare as possible away) from the audio output(your speaker). This is done to minimize noise being introduced into your circuit. The construction of your project boxes is innovative and...
  20. Delta Prime

    8 Note Electronic Organ (how a "practice" kit can turn into a real project)

    A snippet: One circuit arrangement includes means for combining the fundamental frequency and the second and fourth harmonics in a predetermined time relation to produce the zero, attack, peak, and decay characteristics of a piano voice as actually produced by a piano string. Amplitude limiting...
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