Recent content by David Bridgen

  1. David Bridgen

    audio amp

    Standing waves occur along a transmission line.
  2. David Bridgen

    Is it possible to do a RF to RCA??

    Depending upon which country you are in, you can buy adaptors which allow you to connect one type of plug to a different type of socket. 
  3. David Bridgen

    SONY SERVICE MANUAL

    Sony sell service manuals and spares to the public. Ask a dealer for their address in your country.
  4. David Bridgen

    Rookie Student: A Question of Tools

  5. David Bridgen

    MULTIMETER

    The (digital) multimeters which I have encountered that give an audio signal with the probes shorted do so only on a continuity range.  You don't say what range you meter was on when it beeped.  Doesn't the manual tell you under what conditions it does so?
  6. David Bridgen

    Timer. What's wrong

    Ah.  Yes Karl, replace it.
  7. David Bridgen

    Timer. What's wrong

    Hmmm ..... The switch on the trigger pin is a momentary action one? The circuit looks fine otherwise (with a pull up on pin 2).
  8. David Bridgen

    Timer. What's wrong

    Pin 2 needs to be "pulled up", so connect a resistor from it to the positive supply.
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