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  1. Delta Prime

    Looking for an old Motorola IC OpAmp SC9533P (7308)

    I did say "please". ;)
  2. Delta Prime

    I want to know all of the maths concerning this scissor mechanism!

    thanks to the fundamental physics of our universe, perpetual motion machines are impossible.We'd be wrong about simply everything, and nearly none of our observations would make any sense. The first law of thermodynamics is the law of conservation of energy. It states that energy is...
  3. Delta Prime

    Automatic electric bell using wifi

    If you're in the continental United States, a pretty good option would be using highly accurate clocks that establish time using the vibration of a single atom. Radio Controlled Atomic Clocks receive their time from an AM radio signal broadcasted by WWVB in Fort Collins, Colorado. The National...
  4. Delta Prime

    hk lucas 600 poweramp sub

    Do you have a schematic this is all I could find. Do you know what year your unit is? the number of the PCB itself and what revision it is? Can you take a photo of your board both sides component side,solder side, please thank you. Happy belated welcome to Maker Pro!:)
  5. Delta Prime

    Looking for an old Motorola IC OpAmp SC9533P (7308)

    I view your answers as a form of misrepresentation. Presenting AI-generated content raise questions about your capabilities or lack thereof. You are lacking authenticity there's a value placed on genuine experience you are submitting a cheap imitation . [mod edited - violent comment removed]
  6. Delta Prime

    Replacing multiple EPROMs with one large EPROM

    So TTL.. I figured out why you have chosen that avatar.NOT. I thought you were going to copy the 64s and dump the data into the 512s the socket is not going to be able to tell the difference it's all 28 pin sockets & the programmer you use & set up. But if you want to put some Jumpers in,cut...
  7. Delta Prime

    vintage DL1414 LED display replacement & suitable socket

    Your ESD concerns are valid. Make, model,of your soldering iron please. Are you in the United States?are you in Europe? The ESD wrist strap is in reality there to protect you. They come with the one mega ohm resistor in series so it will dissipate the current charge built up of static...
  8. Delta Prime

    Replacing multiple EPROMs with one large EPROM

    Sure why not it's still 8 bits per bite. 2700 family. You got the right idea dip switches for the extra address lines. Now you got me wanting to play some pong! Or pinball I used to swap out chips all the time before I learned how to ride a bicycle with no training wheels... :)
  9. Delta Prime

    Needed Assistance - EMI Issues with 16x2 LCD Display (Model BCB-1602-03C)

    Clarification needed! Full disclosure... I would look for the EMI source. Could be conductive, internal,EMC it could be radiated external RFI, that would depend on your environment. I would have to see the PCB layout and wiring diagram. By the way... Talk about the bottom of the barrel...
  10. Delta Prime

    old century battery charger transformer leads came off

    Call century again obviously they lied if that information is on the internet readily available speak to someone who knows what the hell they're talking about. Work your way backwards from the schematic obviously the terminal block is not there in this schematic I gave you the website so you...
  11. Delta Prime

    Replace with what?

    AO4468 is an N channel trench mosfet. The first three (pins1,2,3) are the source which go to ground, both transistors are biased with the same value resistor R44,R41 connected to the gate (pin4). They are identical Q10,Q11. Replace them both. :cool:
  12. Delta Prime

    want to tinker with my UPS.....

    Anti-Christ Devil Child Honestly I never saw one of your videos I don't watch videos pulled out the info from the conversation. Sorry buddy but I got it like that! Booyah! I think you're going to do what you're going to do and you're looking for a cheerleader to root you on. You got here on your...
  13. Delta Prime

    old century battery charger transformer leads came off

    Now what do you want on your sandwich? Is this for here...or to go! :p https://www.centurytool.net/141_272_Century_15_2_100_Amp_Battery_Charger_s/743311.htm
  14. Delta Prime

    old century battery charger transformer leads came off

    You are going to have to speak up I can't hear you. You going to have to give me a second I got this ringing in my ear see if I can't find a schematic for you... Or did you want a sandwich? https://www.centurytool.net/141_272_Century_15_2_100_Amp_Battery_Charger_s/743311.htm
  15. Delta Prime

    Noisy USB outlet? Request for testing help.

    Help us @hexreader we are falling apart here...
  16. Delta Prime

    Noisy USB outlet? Request for testing help.

    No. You just proven that! It is a process of elimination, you must move on. Mostly all of them have a range of frequencies that they can detect from sub-audible sound waves with a frequency below the lower limit of human audibility generally 20 Hz, as defined by the ANSI/ASA S1.To sound...
  17. Delta Prime

    want to tinker with my UPS.....

    You're the one who sounds like her. I was trying to be nice.. What's next is to continue to assist you that's what we're here for to help others. "If we can survive bickering amongst ourselves." I'm talking about this site not you. I'm more into Metallica!
  18. Delta Prime

    RCA 45J Problem

    In general Look up inside and you'll see a 4 sided star gear. This gear will rotate with the turntable as it is actually attached to the bottom of it. Thats what engages the record drop. With a sharpie pen, mark the position of the star on the shaft that the star fits on. It has to go back the...
  19. Delta Prime

    Noisy USB outlet? Request for testing help.

    EMF Emittance? You going to have to wear a tin foil beanie and underpants just to be safe. And what are your findings? Your best bet is to find the one that doesn't have that 60Hz hum associated with it look for one that does not contain a tiny step down transformer. If you have light dimmers...
  20. Delta Prime

    Newbie needs help determining correct voltage for this circuit

    Where is the actual reply? Or does the site cater to old people's inadequate responses folding blue paper airplanes
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