enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Log amplifier - Wikipedia

   en.wikipedia.org/wiki/Log_amplifier

   Log amp simulated with 1kΩ resistor and 1N4148 diode at 25°C (blue) and 50°C (purple). The difference (red) varies around 50mV. The diode's saturation current I S {\displaystyle I_{\text{S}}} doubles for every ten kelvin rise in temperature and varies significantly due to process variation .

3. Electric power conversion - Wikipedia

   en.wikipedia.org/wiki/Electric_power_conversion

   Aircraft often use 400 Hz power internally, so 50 Hz or 60 Hz to 400 Hz frequency conversion is needed for use in the ground power unit used to power the airplane while it is on the ground. Conversely, internal 400 Hz internal power may be converted to 50 Hz or 60 Hz for convenience power outlets available to passengers during flight.

4. Electric generator - Wikipedia

   en.wikipedia.org/wiki/Electric_generator

   A magnetohydrodynamic generator directly extracts electric power from moving hot gases through a magnetic field, without the use of rotating electromagnetic machinery. MHD generators were originally developed because the output of a plasma MHD generator is a flame, well able to heat the boilers of a steam power plant. The first practical design ...

5. Negative impedance converter - Wikipedia

   en.wikipedia.org/wiki/Negative_impedance_converter

   By using an NIC as a negative resistor, it is possible to let a real generator behave (almost) like an ideal generator, (i.e., the magnitude of the current or of the voltage generated does not depend on the load). Figure: Negative impedance converter. An example for a current source is shown in the figure on the right.

6. Power inverter - Wikipedia

   en.wikipedia.org/wiki/Power_inverter

   Utility frequency conversion - if a user in (say) a 50 Hz country needs a 60 Hz supply to power equipment that is frequency-specific, such as a small motor or some electronics, it is possible to convert the frequency by running an inverter with a 60 Hz output from a DC source such as a 12V power supply running from the 50 Hz mains.

7. Switched-mode power supply - Wikipedia

   en.wikipedia.org/wiki/Switched-mode_power_supply

   No magnetic energy storage is needed to achieve conversion, however high efficiency power processing is normally limited to a discrete set of conversion ratios. When equipment is human-accessible, voltage limits of ≤ 30 V (r.m.s.) AC or ≤ 42.4 V peak or ≤ 60 V DC and power limits of 250 VA apply for safety certification ( UL , CSA , VDE ...