1. C

    Understanding a DC Power Supply

    Need help in understanding how this works. In the attached schematic is shown the DC voltage measurements at top of C12 and C13 relative to “b” to be 11.46 volts and 5.4 volts. This means the current through R20 must be 0.0033 amps. However, this amperage through R18, the only DC source to...
  2. A

    Effect of load in double limiter diode Circuit

    Hi i design in multisim a douple limiters circuit with two diode and two dc source from the simulation i see that the load resistor effect the output waveform in the case of big load (10 kΩ) the output wave form is between V1+0.7 ,, -V2-0.7 this not happen...
  3. E

    Newbie Question: Use of diodes to isolate multiple relay NO outputs

    Hi Folks, I've installed ten 220VAC LED floodlights to the outside of a property. They are powered via 12VDC-220VAC relays. The relays are controlled via 'Smart Outputs' on an intruder alarm system (IAS) using a dedicated output card. The output card has 8, 12VDC relays, of which, 4 are...
  4. Marky G

    What SMD component is this?

    This is from an adblue ecu circuit for Citroen/ Peugeot cars. I need help identifying these components. Thanks for all your replies! The first one has 3 pins with the letters CG and a Y that's horizontal (on another board it shows CG with a U that's horizontal). The second one that's...
  5. H

    Maximum input voltage a diode can handle

    Dear Team, May I know how to find the maximum input voltage a didode can handle.I checked many datasheets no info about this. Can I apply any voltage greater than it's forward voltage. Regards HARI
  6. genekuli

    help, why does my 20kV diode keep burning up

    input is 15kV 15ma (as is on attached picture) going into capacitor bank diode is a Single Phase high-voltage diode rectifier silicon reactor Model: PRHVP 2A-20 (HVP 20 HVP2A-20) 2A20KV Size: 18 x 19 x 75mm (Height * Width * Length ) Operating Temperature: -40 ° C ~ + 175 ° C
  7. Aivaras Andrijauskas

    LTspice - added diode models not listed.

    Standard.dio (diode models) (https://forum.allaboutcircuits.com/attachments/standard-txt.65504/) This is an updated version of the diode models file, which includes the 1N4001 diode, which is what i'm after. I replaced the file in /cmp with this one, but the program doesn't list any new diode...
  8. Mr Web

    Identification of diode

    Hello all. I need help to identity a diode. Please see attached picture. . Thank you in advance.
  9. GrampsFish

    Sensor(s) to determine if plastic pickleball has hit target

    I made a 4' wide x 3' tall plywood practice wall, and drew an 18" wide x 10" target on the plywood. I would like to make some sort of sensor array that would be positioned about 1.5" off the plywood playing surface and sound a chime each time the 2.75" diameter plastic pickle ball tripped one...