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  1. B

    Sogo jpn-650 circuit not working

    H2814D has already figured out a blown fuse. Please check if something else looks blown, burnt or melted. Check the ICs and PCB traces with a multimeter.
  2. B

    LR circuit for PWM Input

    Here is a video series about RL circuit step-by -step design and analysis. You can watch this too:
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    Korg LP-350 Low Volume Problem

    Here is the manual. It may help you: http://i.korg.com/uploads/Support/LP350-UM-E_634583327235940000.pdf If it does not, you can post your question to the korg forum. Maybe there are other people who solved the same problem.
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    GLCD interfacing with dspic30f4011

    I think these docs will help you: https://manualzz.com/doc/o/nc2pi/mikroc-for-dspic-users-manual-t6963c-graphic-lcd-library
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    Fire alarm using a PTC as a sensor.

    Here is a PTC-based fire alarm circuit that you can follow: By the way, you can also consider using a temperature sensor+arduino instead: https://www.theengineeringprojects.com/2019/09/what-are-temperature-sensors.html
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    Nutone IM-303 Terminal Board Power

    Good to know. Would like to see how you fixed it.
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    Looking for flyback SMPS controller IPS16H

    Hello, I think you can contact the manufacturing company. Contact details are given at the end of the datasheet: https://www.microsemi.com/document-portal/doc_download/124849-ips16-datasheet
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    PHP Web Site Counter

    I think it's better to post this to a PHP related forum.
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    I want to combine these two circuits into one. can someone help?

    You can use a microcontroller instead. That will be able to read multiple sensors at a time.
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    Need Help with my PS5 controller! [DRIFT]

    Thanks for letting us know. It's really not very easy to do such a repair without having any schematic etc.
  11. B

    Help request: Project measuring the absorbed current

    You can get an idea by adding these two tutorials: https://circuitdigest.com/tutorial/true-rms-to-dc-converter-using-ad736-ic
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    Need a countdown controller for plug, that needs not button pushing!

    You can make a count down timer with a microcontroller+ 7 segment displays. You can use AC to DC adapter to power up your circuit.
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    Project feasibility - Police Speed Gun

    You can procced with these sensors. I think you have to work on trial and error basis to see which one gives the best accuracy.
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    Hello World

    You can start with some basic projects. Maker pro has many good blogs and tutorials like this: https://maker.pro/allthingstalk/projects/a-guide-to-led-emergency-light-circuit-with-ldr
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    Door King 1830-01 POTS telephone hum prevents data send/receive.

    You can also contact Doorking support team: https://www.doorking.com/tech-support
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    Schematic Diagram of Fluke 707

    The manual is here but couls not find a schematic. https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.fluke-direct.com/pdfs/cache/www.fluke-direct.com/707ex/manual/707ex-manual.pdf&ved=2ahUKEwiavNTgp5__AhWNbmwGHUejAwoQFnoECAoQAQ&usg=AOvVaw2q8zHV5dci_c4sJ8ah-jSH
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    Problems with my school project Automatic ON OFF lamp using LDR and MOSFET

    I agree with the first answer. I also suggest you check all the parts separately with DC voltage. See if all of them are functional.
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    It's about Protel 99 SE SP6

    If you find the deleted database files in the recycle bin, you can restore them to their original location.
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    Help needed PE/IR Sensor

    You can also see laser-based automatic car parking systems.
  20. B

    Mixed solar-electric network water heater.

    Not sure but I think you are referring to a solar water heater controller or solar diversion controller.
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