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  1. Aan

    Opamp

    More simple maybe..  ;D what do you think ?
  2. Aan

    Inductor in LC filter

    What type of inductors typically used in LC filter, is it toroidal or solenoid ? Thanks.
  3. Aan

    SCR datasheet request

    I need datasheet for SCR 1RC-10. thanks.
  4. Aan

    Opamp

    I need opamp which it's output can sink 0.5 A or more, the opamp is for constant current power supply design to supply current 30A or more.
  5. Aan

    Opamp

    Hi, i need opamps which it's output can sink minimum of 0.2A. Thanks.
  6. Aan

    Chrome Electroplating

    Hi, i need articles about processes of electroplating specially for chrome electroplating, and articles about specifications of power supply for electroplating. Thanks.
  7. Aan

    Telephone Ring Circuit

    I think i know how to figure it out, i'll try it. Thanks.
  8. Aan

    Telephone Ring Circuit

    :-\ sorry don't know how... :(
  9. Aan

    Telephone Ring Circuit

    Yes it is aloud noise produce by telephone set, i reduce the voltage level to 40 volt and it work. How to place double-throw switch in the circuit ? and how to detect if the telephone's handset on the other side was picked-up ? Regards.
  10. Aan

    Telephone Ring Circuit

    Hi audioguru, Well, i am trying to understand how general system of PBX working, but first i need to understand the basic circuit/connection between two telephones, i found two simple circuits on the internet of how to make an intercom (as you said) of two telephones or connect two telephones...
  11. Aan

    LCD Monitor training document!

    Hi Shahriar, Do you have walktrough to interface microcontrolers with CRT ? Can you share with us ? Best Regards.
  12. Aan

    Telephone Ring Circuit

    Hi audioguru, On line telephone with two wires,  TIP and RING. I have found 2 type of circuits to make simple telephone network with two telephones and with no ringing circuit. 1. One type of circuit is to connect TIP line on one side to the other side of line directly, and cut the RING line...
  13. Aan

    Telephone Ring Circuit

    Hi audioguru, How to make the telephone on the other side ringing ?  how to detect if the phone hook on the other side is picking-up and disconnect the ring circuit to not interfere with the line ? Best Regards.
  14. Aan

    Datasheet Request

    Hi, i need datasheet for IC +--------------------+ |
  15. Aan

    Telephone Ring Circuit

    Hi, i want to understand how telephone ring circuit work and how it is connected to line (virtual telephone like PBX, not connected to PSTN).
  16. Aan

    Speed Relay

    Here is additional information..
  17. Aan

    Speed Relay

    I still can't figure out what the name of the company which has the logo.
  18. Aan

    Speed Relay

    Thanks a lot, i don't know exactly which company having this logo. Do you think they had changed their company logo to a new one ? Regards.
  19. Aan

    Speed Relay

    What company name which hast that logo ?
  20. Aan

    Speed Relay

    Here is the company logo.
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