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2. Current loop - Wikipedia

   en.wikipedia.org/wiki/Current_loop

   To allow the construction of hybrid systems, where the 4–20 mA is generated by the controller, but allows the use of pneumatic valves, a range of current to pressure (I to P) converters are available from manufacturers. These are usually local to the control valve and convert 4–20 mA to 3–15 psi (or 0.2–1.0 bar).

3. Solenoid voltmeter - Wikipedia

   en.wikipedia.org/wiki/Solenoid_voltmeter

   Some manufacturers include a continuity test lamp function in a solenoid meter; these use the same probes as the voltage test function. This feature is useful when testing the status of contacts in energized circuits. The continuity light displays if the contact is closed, and the solenoid voltmeter shows voltage presence if open (and energized).

4. Electronic test equipment - Wikipedia

   en.wikipedia.org/wiki/Electronic_test_equipment

   The following are used for stimulus of the circuit under test: Power supplies; Signal generator; Digital pattern generator; Pulse generator; Voltcraft M-3850 portable multimeter. The following analyze the response of the circuit under test: Oscilloscope (Displays voltage as it changes over time) Frequency counter (Measures frequency)

5. Thyristor power controller - Wikipedia

   en.wikipedia.org/wiki/Thyristor_power_controller

   In this operating mode, the controller changes the phase angle α of the thyristor ignition timing. A half wave corresponds to 180 ° el. (electrical degree). The actuator can adjust the phase angle of 0 ° el. (maximum power) up to 180 ° el. (no power). In a 50 Hz mains the controller switches every 20 ms and shows very fast behavior.

6. Teradyne - Wikipedia

   en.wikipedia.org/wiki/Teradyne

   In the 1980s, Teradyne expanded its sub-assembly test business by acquiring Zehntel, a leading manufacturer of in-circuit board test systems. In 1987, the company introduced the first analog VLSI test system, the A500, which led the market in testing integrated devices that provided the interface between analog and digital data .

7. Multimeter - Wikipedia

   en.wikipedia.org/wiki/Multimeter

   Any meter will load the circuit under test to some extent. For example, a multimeter using a moving coil movement with full-scale deflection current of 50 microamps (μA), the highest sensitivity commonly available, must draw at least 50 μA from the circuit under test for the meter to reach the top end of its scale. This may load a high ...

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. LCR meter - Wikipedia

   en.wikipedia.org/wiki/LCR_meter

   An LCR meter is a type of electronic test equipment used to measure the inductance (L), capacitance (C), and resistance (R) of an electronic component. [1] In the simpler versions of this instrument the impedance was measured internally and converted for display to the corresponding capacitance or inductance value. Readings should be reasonably ...