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HarryA

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HarryA last won the day on December 24 2022

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About HarryA

  • Birthday June 23

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    USA, Pennsylvania, Susquehanna County,
  • Interests
    Canoeing, woodworking, electronics, and gardening.

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  1. Multi-turn pots makes it slow to make adjustments. As Vellerman did not use them perhaps you could replace the pots with good ones like Allen-Bradley pots. Beware of the various tapers that pots have. Check Ebay for good prices on Allen-Bradley pots from US suppliers.
  2. Are you using the information from Jaycar site? There is lot of information on their web site in Specifications and Articles. https://www.jaycar.com.au/atmega328p-mcu-ic-with-arduino-uno-bootloader-and-16mhz-crystal/p/ZZ8727 The manual is here: https://www.jaycar.com.au/medias/sys_master/images/images/9794372567070/ZZ8727-manualMain.pdf
  3. Forums like this one would be more useful for your questions. They have folks there that have a lot of combined experience. https://www.solarpaneltalk.com/
  4. What code book? And why do you care? Unplug the refrigerator and plug it into one of these. https://www.ebay.com/itm/293616232230?_trkparms=amclksrc%3DITM%26aid%3D1110018%26algo%3DHOMESPLICE.COMPLISTINGS%d%3APL_CLK|clp%3A2047675
  5. As this was in response to a previous post that was removed I will replace with a joke: Wife texts husband on a cold winter morning: "Windows frozen, won't open "Husband texts back: "Gently pour some hot water over it and then gently tap edges with hammer." Wife texts back 10 minutes later: "Computer really messed up now."
  6. I would think these 5 volt and 5 or 8 ampere power supplies would be useful for micro-controllers, etc. https://www.sciplus.com/8a-5vdc-power-supply-65520-p
  7. If you are handy with a soldering iron you can get a push button switch with potentiometer on ebay. for example: https://www.ebay.com/itm/113927101102?hash=item1a86959aae:g:TyAAAOSw6ShdqKXJ&amdata=enc%3AAQAHAAAAsCTccvK8zt8P7ay7xO2JNnQVqK54hb11np% You would need to match the potentiometer on the switch with the one on the timer board. You could replace the potentiometer and switch on a timer board like this perhaps: https://www.amazon.com/Module-Adjustable-Timing-Switch-1-10sec/dp/B07SL5HBZ9/ref=sr_1_58?crid=3806JFZG2WCBO&keywords=time+delay+board&qid=1670774252&sprefix=time+delay+board%2Caps%2C129&sr=8-58 Look for one with the delay you need.
  8. "Search for the power board for a Tektronix oscilloscope mod. TDS460. The P/N is PS1690 rev.A" In the future you may use https://translate.google.com/ There are a number of boards on ebay.com for the TDS460. You will have to scroll down to find them. See: https://www.ebay.com/sch/i.html?campid=5338192028&kw=TDS460&mkcid=1&mkrid=711-53200-19255-0&toolid=20004
  9. Is Rolling Meadows, IL 60008 near you? see: https://www.solder.net/training-courses/bga-rework-training/ See for low key diy rework: https://www.instructables.com/BGA-rework/
  10. You need to supply a link/url to the DXP software you are using. There are numerous software packages called DXP.
  11. see: https://en.wikipedia.org/wiki/Button_cell for chemical composition of the CR2032 cell. The C tells you it is Lithium and Manganse Dioxide.
  12. You have been well answered on the numerous forums you have posted this question on. I do not see anyway to post links now - Admin got sick of having to delete them?
  13. I would think you would not need a converter given: "Discharge current is software and electronically regulated using a solid state switch and fan cooled electronic load" Why can't you get the energy/power by simply charging a capacitor over some time interval? Given work W = 1/2*C*V*V in joules. You may need to make allowance for the capacitor's ESR either charging or discharging. For others: Equivalent series resistance (ESR) describes losses associated with moving a charge through a capacitor. See: https://www.digikey.com/en/articles/simple-explanation-of-capacitor-esr
  14. I would think shorting the output would kill the converter thus acting as a smokey fuse. The solar power folks use converters that supply a constant output for varying input voltages. One would like a converter that supplies say 5v as the capacitor discharges from say 12v to 7v. Perhaps this type: https://www.amazon.com/DEVMO-Adjustable-Converter-XL6009-Voltage/dp/B07SZQMKLW Also searching on the internet for "solar dc up down converter" will give you some useful information.
  15. Try measuring the input resistance at the +Vin and -Vin. On the up/down converters I have they measure 400k to 2meg ohms. Perhaps comparing the two would be helpful. One has to expect failures from these inexpensive Chinese modules.
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