Search results

Search Forums New Posts
  1. bertus

    Resistor wattage confusion

    Hello, That is not a tapping but a staple of the booklet. Bertus
  2. bertus

    Resistor wattage confusion

    Hello, Here is also the partlist for the kingshill 36v5c: Bertus
  3. bertus

    Resistor wattage confusion

    Hello, Possibly this page has the schematic for the powersupply: https://www.schematicsunlimited.com/k/kingshill/kingshill-v-series-model-c-power-supply-service-manual Bertus
  4. bertus

    Help with 74192

    hello post your schematic of the used circuit that way we can see how the circuit should behave we can also give you better advice bertus
  5. bertus

    MIL-HDBK-217

    Hello, The book seems to be available here: http://everyspec.com/MIL-HDBK/MIL-HDBK-0200-0299/MIL-HDBK-217F_14591/ Bertus
  6. bertus

    Help with 74192

    Hello, As @Alec_t said, is Qa correctly connected? It is on pin 3 of the chip. This page will give you a lot of the 74XX chip connections: https://electronicsclub.info/74series.htm Bertus
  7. bertus

    electronic Tesla valve (ETV)

    Hello, As Harald said, the drawing is a mess. Have a look here for some guidelines: https://electronics.stackexchange.com/questions/28251/rules-and-guidelines-for-drawing-good-schematics Bertus
  8. bertus

    please i need a mentor to guide to learn how to make basic electronic circuits especially led emergency lights, mobile phone chargers, laptop chargers

    Hello, As @Martaine2005 said, those things are not for beginners. First have a look at the safety guidelines: https://www.repairfaq.org/sam/safety.htm For repair pages have a look at my resource: Troubleshooting and Repair info pages Bertus
  9. bertus

    Elektor TUN TUP DUS DUG specifications

    Hello, In the early days of Elektor they used minimum specs for transistors and diodes. They called them TUN TUP DUS and DUG. Here is a page from an old Elektor book with the specs and examples: I found this page in the following book on the internet archive...
  10. bertus

    Hall sensor time out calculation

    Hello, Do you have a document to share where this signal is given? Bertus
  11. bertus

    help fixing audio amplifier no sound out

    Hello, @pharaon , It would be nice if you could share the solution. That way others with a similar problem could be helped too. Bertus
  12. bertus

    fm generator 10.7

    Hello, You could use a ceramic filter to create the 10.7 MHz oscillator: This schematic was found on this pege: https://www.agder.net/la8ak/12345/n19.htm Bertus
  13. bertus

    Help identify this fuse

    Hello, Then we likely need a wider view of the board. Bertus
  14. bertus

    Help identify this fuse

    Hello, As there is ZD next to the diode, it is a zener diode. Bertus
  15. bertus

    Hello, Welcome! (Introduce yourself)

    Hello, Welcome aboard. You can learn a lot from the online book on this site: https://www.allaboutcircuits.com/textbook/ Also the Internet Archive has a lot of books and articles for free...
  16. bertus

    Comedy Thread

  17. bertus

    Switching DC motor with TIP122 and Arduino

    Hello, There is no problem using dana's circuit for switching the motor on and off using a digtal pin. PWM is nothing else as very fast on/off switching. Bertus
  18. bertus

    Cannot get this circuit to power up, plus some components I cannot identify

    Hello, On this page I founs an other 50B part: https://smd.yooneed.one/code3530.html The AAT60050B-S5 is also in SOT-23-5 housing. Bertus
  19. bertus

    Cannot get this circuit to power up, plus some components I cannot identify

    Hello, The device with code 50B could be a RP100N131B: https://www.digikey.com/en/products/detail/nisshinbo-micro-devices-inc/RP100N131B-TR-FE/10215141 Bertus
  20. bertus

    And now something weird

    Blind girl plays a perrfect piece of chopin: Bertus
View older results
Top