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  1. GPG

    Faint display on Aiwa Tuner

    The manual you directed to, the index says 86p but only 67 are available. What model No. The VFL display whatever the model will have the filaments/cathode connected to the two pins at each end of the displays line of pins. the usual voltage is ~3Vac check for this. In the diagram I loaded, the...
  2. GPG

    B&t Tracer unit, xenon flash not working.

    OK so the resistor checks out at ~1Meg. that leaves the capacitor and scr as possible leakage sources. With the cap disconnected measure the voltage on SCR
  3. GPG

    I'm New, Please Help Me!!!

    I think OP may have a direct drive TT. The fine pitch adjustment is by potentiometer controlling a 3 ph brushless motor. I use a good quality sewing machine oil for relubing pots. It mixes with the dried out lube on the track, and being vegetable base, does not dry so easily. I use a hypodermic...
  4. GPG

    B&t Tracer unit, xenon flash not working.

    .995 what? What are its markings. Anything written on the trigger capacitor?
  5. GPG

    I need to turn on an LED when switch is open

    Check that it operates in that configuration. I think you will find that operation is more reliable with the magnet and switch parallel to each other.
  6. GPG

    Vintage Heathkit 4001 weather station how to split sensors between two consoles

    Circuit ground. Its connected at the PSU to the chassis/mains earth
  7. GPG

    B&t Tracer unit, xenon flash not working.

    http://www.umdcorp.com/download/pdf/MCK100-6(R160312).pdf
  8. GPG

    Vintage Heathkit 4001 weather station how to split sensors between two consoles

    Leave the white feed to the LEDs disconnected from one unit (power) and blue (transistor supply) The opto transistors for wind speed/direction feed a buffer with a 10KΩ input so they can be connected in parallel. Connect grounds. Temp sensors should be separate. Should work over 15' ok
  9. GPG

    Vintage Heathkit 4001 weather station how to split sensors between two consoles

    Better than the site I found. zipped though the images are a little clearer Need to print and stick together to trace anything
  10. GPG

    Splitting voltage

    Apart from the non linearity of the sender making accuracy moot, you can improve the resolution given the slow change of input by oversampling. http://www.atmel.com/images/doc8003.pdf https://www.silabs.com/Support Documents/TechnicalDocs/an118.pdf Search for more. You could use a lookup table...
  11. GPG

    B&t Tracer unit, xenon flash not working.

    Would expect more Typical cct: http://www.bristolwatch.com/ele/ Check trigger capacitor/resistor
  12. GPG

    B&t Tracer unit, xenon flash not working.

    You have to turn on the SCR labelled 'TH'
  13. GPG

    Repair help on LG OS 5020C oscilloscope

    With the grey body, it could be a fusible resistor. Check the value on the good unit. Back bias. Here's one method http://www.aikenamps.com/index.php/what-is-back-biasing
  14. GPG

    Faint display on Aiwa Tuner

    Nothing helpful on p67 Check C915, 916, p49 and -30V WH805. SFR1 seems to be for signal strength meter adjust p49
  15. GPG

    I need a PCB designed

    P channel Available in duals. Vgs clamp needed for 15V I'm sure a search will turn up a contender with Vgs 20V http://pdf.datasheetcatalog.com/datasheet/on_semiconductor/MMSF4205-D.PDF
  16. GPG

    Charging a LiO Battery with a solar panel for Ebike

    Not a starter. If you are going to use a converter use it for maximising the charging current. https://www.google.co.nz/search?q=maximum+power+point+tracking&ie=utf-8&oe=utf-8&gws_rd=cr&ei=bydlVoqWOafJmAXom4jgBA...
  17. GPG

    clever I2C/SPI switch: fail

    In the interest of pincount etc http://pdf1.alldatasheet.com/datasheet-pdf/view/52729/FAIRCHILD/H11F1.html
  18. GPG

    Questions about UART communication

    How about some links to the devices you are using?
  19. GPG

    power supply

    I'd label that Q insufficient information.
  20. GPG

    Rotating Solar Panel Mount/Limit Switches

    https://www.google.co.nz/search?q=waterproof+micro+switch&ie=utf-8&oe=utf-8&gws_rd=cr&ei=fKJjVv-VHcPV0ASdoq6YCw
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