Wideband Amplifier Project - 2019. 9. 26.آ  Wideband Amplifier Project INPUT provides:-1...

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Transcript of Wideband Amplifier Project - 2019. 9. 26.آ  Wideband Amplifier Project INPUT provides:-1...

  • Wideband Amplifier Project

    INPUT provides: - 1 MΩ AC/DC (14 pF) - Allows using scope X10 probe - 50 Ω / GND (input open) - DC Offset adjustment

    on X10 output

    - 150 mA max @ 12V - Separate 50 Ω outputs

    for X1 and X10

    J. Audet VE2AZX ve2azx.net

  • INPUT OUTPUTS

    View of assembled PCB Note the two 50Ω striplines at the outputs

    Hammond 1455J case used, top cover removed.

    NOTE: I have a few PCBs available for sale, along with decals. $12 US. Contact me.

  • Input Z = 50 Ω IN/OUT Impedance = 50Ω

    (0 dB)

  • Input Z = 50 Ω IN/OUT Impedance = 50Ω

    (20 dB)

  • 1 dB compression as measured with VNA Output levels measured with HP468A power meter /HP8481A sensor

  • Hammond 1590J case used

    Using a fully shielded enclosure to improve immunity to RFI

  • BNC Jacks: A32231-ND

    Note: 330 pF cap 0805 bypass cap installed across contacts

  • 50Ω

    GND

    DC

    AC

    SW1 a bSW2

    J6 J7 J5 J4

    SWITCH Wiring - Rear view

    Wiring of the switches

    Notes -Both switches sub-mini type

    - S1 type: DPDT center off