diode

  1. C

    a question I don't understand about the diode

    Hello everyone, friends, I am facing a problem and I could not get out of it as a result of long efforts D3 Si Diode D4 Ge Diode has a semiconductor structure. Asks us to determine and draw the change in the output voltage Vo when the input is given to this circuit. But I could not find...
  2. I

    Diode ID help

    Hi all, Don't know if this is even possible but would anyone be able to get a rough ID on this diode? I don't have a schematic for the circuit board and there aren't any part numbers on it. One of the (not blown) diodes next to it has "something" V 5 on it, if that helps at all. They may have...
  3. D

    Helppp!!!!! -----Find specifications of Diode named ST MV GP 931

    Dear Team and bros In my PLC from Schneider, there is a damaged diode named ST MV GP 931 (Please check attached photos). But I cannot find the information and specifications of this diode on the internet, even from the website https://www.st.com/. Any bros can help me to find the...
  4. V

    Value to simulate igbt and diode in ltspice from datasheet

    I have igbt and diode data sheet used for inverter and rectifier circuit design. i need simulate inverter in ltspice using the voltage controlled switch component. How obtain to these values from the igbt/diode data sheet datasheet is attached here Name Description Units Ron Resistance in...
  5. N

    Laser diode driver oscillating

    Hi, I came across a circuit which can be used to drive a laser diode in continuous mode (CW) or modulated (<=100Khz). A BFR540 (NPN) transistor is used to drive the laser diode and a photodiode (inside the laser diode package) provides an output current based on the optical output power, which...
  6. I'm building a little circuit and need help with Diodes.

    My question is this - Can a diode still work if it has electricity coming in from both ends? For example if I have a diode, and connect a DC generators output to one end of the diode, and do the same for the other end as well what will happen?
  7. How to make a simple oscillator with transistor and Capacitor?

    I provided a circuit which should discharge at a specific time. But this circuit is not working as an oscillator. How should I make circuit which will give me oscillation?
  8. Power losses for half/full-diode-bridge ??

    Hello, I have some concern regarding an equation for calculating power losses for half - and full diode-bridge. Can someone please check if this equation is correct or not? See the attached image. " Fig. 1. Typical diode full-wave bridge. Full-wave diode bridges are found in many...
  9. HELP ABOUT THIS DIODE

    hi everybody i have problem with knowing this diode (in attached, D5). what kind of diodes? schottky? printed code in its body is j 8j i cant understand this.it used in power supply 110 v ac to DC(measured 150 v dc) for energize an air circuit breaker. this diode use inverse in output to damp...
  10. T

    Frequency of high voltage diode

    Hi I want to buy 2CL2FM . http://www.hvgtsemi.com/upfile/pdf/2012110817253555456.pdf Trr =100 ns I want to find out the real switching frequency of the diode. Can I apply it in the smps with 100 khz of switching frequency? Regards
  11. Look at the schematic...

    **broken link removed** What's the use of 5th diode in this schematic..(which is in parallel with cap)? This is a circuit to drive led from mains AC. Sorry if this question is too simple or obvious.. I just want to know what that diode's doing there.
  12. B

    Diode OF4455??

    Hello everybody! I have a burnt diode on a car Bosch control unit. This diode has this reference on it: OF4455 PEM0527 E7 I think it's a Philips TO-220 diode that is no longer manufractured. Does someone know if there's any other equivalent diode I could use? Thank you in advance for your...
  13. F

    Recommended diode for LNK304 PSU

    Hi, all! I want to build the circuit suggested on page 4 of LNK304 datasheet, but I can´t find any place to buy the 1N4005GP diode. Can anyone tell me if is it possible to use an equivalent diode? Thank you!
  14. Diode with low voltage drop?

    Hello I need a diode with less voltage drop like 10SQ050 that is 50V 10A... But i need something that is rated at least 30A or 40A with 50V or more... Is there such a diode available? Also do any of you know what kind of diode is that in image below (in red circle)? **broken link removed**...
  15. M

    Regeneration Power from Motors back to battery - blocked by DPDT switch - need Diode rating

    Hi, Ive tried to find what rating of power diode to wire in series with an emergency shut off button, I'm going to be using a DPDT as I have 2 batteries on 2 circuits - the 11 volt battery to the motors via a robo claw motor shield (2X30A) and a 7 volt battery for an Arduino and logic power on...
  16. A

    48 Volt Phantom Power Supply with Photo-Schematic. Transformer Question.

    Hey guys, This is my first post and I am happy to have found this website. I am currently working on a project using a PCB and jumper wires to make a 48v Phantom Power supply to be used with multiple condenser microphones. To make a long story short, I found a "mostly" detailed post on another...
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