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  1. bertus

    MTS-165 not working

    Hello, I had to look up what a MTS-165 is. It seems to be a MIG Welder: https://www.amicoelectric.com/product/mts-165-165-amp-mig-mag-flux-cored-lift-tig-stick-arc-dc-inverter-welder-100-250v-dual-voltage-compatible-spool-gun-spg15180-spg15250/ What does the manual say about the blinking...
  2. bertus

    Germanium power transistors

    Hello, The sub-numbering could have to do with production location and production date. It will be of no influence on the working of the transistors. Bertus
  3. bertus

    Marantz 2230B with Weak FM

    Hello, In the posted schematic I see two ceramic filters and a tuned circuit in the detection section. Bertus
  4. bertus

    Any Advantages of Tubes (Valves) Over Solid State & Microelectronics?

    Hello, I looked up the specs and found this: CW is most times used for decoupling in NMR, wich requires low power. https://en.wikipedia.org/wiki/Nuclear_magnetic_resonance_decoupling Bertus
  5. bertus

    Any Advantages of Tubes (Valves) Over Solid State & Microelectronics?

    Hello, The RF power amplifier is only used for pulsing in a NMR or MRI system. Bertus
  6. bertus

    Any Advantages of Tubes (Valves) Over Solid State & Microelectronics?

    Hello, In the old days we had an RF amplifier capable of 1 kW pulses using 2 4CX250 ceramic tubes. Nowerdays we have mosfet RF amplifiers capable of almost 2 kW pulses. Bertus
  7. bertus

    Any Advantages of Tubes (Valves) Over Solid State & Microelectronics?

    Hello, Tubes are considered vintage. Have a look at this resource I made: Vintage info from the days of vacuum tubes Bertus
  8. bertus

    Help to ID capacitor

    Hello, Here is a page from Mouser for the part: https://eu.mouser.com/ProductDetail/KEMET/C322C104K1R5TA?qs=bj9urr5MP/L1an4soHFd0Q== Mouser is a respected seller. There is a clear datasheet on the given page. Also from the page about the brand: Ceramic Capacitors KEMET Electronics Ceramic...
  9. bertus

    Help to ID capacitor

    Hello, Your attitude makes me think of this: bertus
  10. bertus

    Need help identifying diode

    Hello, There likely must be more info on the diode. As the PCB code sais DZ, it could be a zener diode. The only one with 85 I know is the BZX85 series, wich exist in many voltages, wich should be given on the diode. Bertus
  11. bertus

    Scoreboard repair

    Hello, Could it be that the middle pin is not connected? The tab is also the output of the regulator: Measure at the tab to check. Bertus
  12. bertus

    One of the LEDs that shows time on my alarm clock is behaving badly -- 7 Segment LED Display

    Hello, There is some info on the LM8364 sanyo chip on the radio museum site: https://www.radiomuseum.org/tubes/tube_lm8364.html You will have to register to download the larger images. Bertus
  13. bertus

    Failed diodes

    Hello, @kellys_eye , Here is the complete murphy collection. Bertus
  14. bertus

    Comedy Thread

  15. bertus

    Hello from north Texas

    Hello, Welcome, There are many articles on Elliots Sound Products that might be of interest: https://sound-au.com/articles.htm Bertus
  16. bertus

    Tarjeta de navidad

    Hello, Lets keep ALL in english. The PCR406 is a thyristor in a TO92 housing: https://www.alldatasheet.com/view.jsp?Searchword=PCR406 Bertus
  17. bertus

    Scoreboard repair

    Hello, The images on the google drive don't show. Upload the images to the forum. Keep the size 300 kB max. Bertus
  18. bertus

    Interfacing Sharp UP-35xx via serial or jtag?

    Hello, Perhaps you can find some info in this manual: https://servlib.com/sharp/epos/up-3515-sm8.html Bertus
  19. bertus

    Scoreboard repair

    Hello, It is most likely one in the LD1117 (ST) or LM1117 (texas) series. (the texas datasheet is to large to upload) See the datasheet for more info. Bertus
  20. bertus

    could you identify this IC code

    Hello, What is the droplet on the chip? It looks like wax. Is it removeble, to see the text undeneath? Bertus
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