LOPT / FBT Tester


Rating: 0.00 / 5 
Meters Circuits / Meter Counter Circuits
This little instrument identifies faults in horizontal output stages by doing a `ring` test, i.e. it applies pulses to the LOPT / FBT primary circuit, and counts the number of damped oscillations or `rings` produced. For each `ring` down to about 15% of the test pulse amplitude, one LED in the `bargraph` lights up... nearly all faults will greatly reduce the number of `rings` and give a very low reading.

It can be used on both monitors and TVs because it`s not frequency-sensitive, and the test signal amplitude is only 650mV- low enough not to forward-bias semiconductors in the circuit. To do a basic test, you connect the test leads between chassis

  • News

    • Springfield News-Leader
      Springfield News-Leader “It's all hands on deck,” Boyce said with a smile as he carried a lap into the field. Volunteers included ... “With the crowd, everything was better,” said Marissa Kurtimah, who oke the 200- da
       28 April 2016
    • Electronics Weekly
      Electronics Weekly Litre , Buckinghamshire, trade: Designs, manufactures and supplies flow , instrumentation, sensors and supporting spares. Lund Halsey Console Systems, Buckinghamshire, trade: Designs and manufactures control room consoles,
       28 April 2016
    • Patch.com
      Patch.com We were convinced that we could meet our objective of not providing free street parking for those heading for a night in Manhattan, rather than using the space for a dinner, movie or exercise class in the Village with the 7pm termi
       26 April 2016
    • Destructoid
      Destructoid If you attack vulnerable areas enough, a focus builds up. When dealing the killing blow, a full focus initiates a ief window in which Sasha can sever the arms/tentacles/wings/eyes of her opponents. It's possible to wiggle your f
       26 April 2016
    • ESPN
      Four minutes into the match, he put a midfield penalty into touch ten from the visitors' line, and the lineout ball was moved quickly through two phases. Tempelmeyer found Callan Erasmus with a skip ... Goss would immediately get his name on th
       26 April 2016
    • ESPN
      Etches quickly countered and placed a soft foot on the ball driving it inside the 5 line where Kennedy scooped it up and ran in for the 5-pointer (22-5, conversion missed). Just minutes later, the Scarlets were ... After moving through a couple
       26 April 2016
    • Charlotte Post
      Charlotte Post “The CIAA is really competitive,” said Golden Bulls sprinter Tovea Jenkins, one of the favorites in the women's 400 . “The CIAA has ... The list of CIAA athletes to win international championships has been imp
       23 April 2016
    • The Suburban Times
      Crew Emphasis: The crew concentrated on mowing rights-of-way, spraying noxious weeds and other vegetation, street sweeping, equipment maintenance, and the annual traffic program. ... The crew installed three new water on 4th Street
       22 April 2016
    • Chicago Tribune
      Chicago Tribune To the parking problem, the village proposed placing a three-hour parking limit on two surface parking lots along the east side of Marion Street between Lake Street and North Boulevard. ... In addition to the parking lot rest
       21 April 2016


    Leave Comment

    characters left: