test equiptment

  1. D

    Digital Multimeter Input Impedance

    Hello, I was just looking at my Fluke 179 DMM manual and I came across the following nominal input impedance for Volts ac. >10Mohm < 100 pF I would like to check my understanding, but I'm assuming the < 100 pF is related to the capacitive reactance at some frequency, however it will not be...
  2. AverageMoss

    Full-wave rectifier circuit showing half-wave rectification on oscilloscope?

    I'm new to electronics and decided to learn something new by trying to put together a small rectifier circuit that converts 24VAC to DC. So I put together a little full-wave rectifier circuit that consists of four diodes and an LED and ran into an issue when I tried to measure the DC output...
  3. A

    Soldering dead bug circuits

    Hi there, I have been working on an AM radio test generator. It is from the book ”building your own transistor radios”. I would provide a schematic of the circuit although I believe the copyright would prevent me from doing so. The two ICs used in the circuit are the 74HC14 hex Schmidt...
  4. G

    Antenna Farfield Measurement

    I am trying to get the value of the h field with a horn antenna as a reference antenna. I used a 90 degrees waveguide twist with the horn antenna in preset to measure le level of the received signal. But I am getting strange values. Am I proceeding the right way to measure the h field? If yes...
  5. LearningAboutTech

    Collection of Electrical Test Equipment Recently Acquired

    My partner and I recently acquired a very large collection of electrical test equipment. (See the attached photos) The man who originally amassed this collection had a deep appreciation and understanding of antique and modern electronics, utilized ample funds to purchase and collect unique...
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