AC Circuits
... changes; do not go into the period-doubling regime, but note that beyond a certain driving voltage the diode voltage amplitude jumps as you change the driving frequency. There is hysteresis in these jumps; for a range of drive amplitudes, the diode amplitude can be large or small, depending on the h ...
... changes; do not go into the period-doubling regime, but note that beyond a certain driving voltage the diode voltage amplitude jumps as you change the driving frequency. There is hysteresis in these jumps; for a range of drive amplitudes, the diode amplitude can be large or small, depending on the h ...
DI-124 Design Idea LinkSwitch-TN
... while the drain of Q1 drives the transformer primary. The drain voltage of U1 is limited to 450 V by VR1-3. This extends the maximum peak composite drain voltage of U1 and Q1 to 1050 V. The resistor chain R6-R8 provides startup charge for the gate of Q1 and R9 dampens high-frequency ringing. Once th ...
... while the drain of Q1 drives the transformer primary. The drain voltage of U1 is limited to 450 V by VR1-3. This extends the maximum peak composite drain voltage of U1 and Q1 to 1050 V. The resistor chain R6-R8 provides startup charge for the gate of Q1 and R9 dampens high-frequency ringing. Once th ...
Power electronic converter technology
... Typical applications have been frequency converters for asynchronous motor drives and grid connected front-end converters, but also converters for subsea applications (e.g. hyberbaric welding machines). The group has expertise for managing the most important challenges in connection to converter des ...
... Typical applications have been frequency converters for asynchronous motor drives and grid connected front-end converters, but also converters for subsea applications (e.g. hyberbaric welding machines). The group has expertise for managing the most important challenges in connection to converter des ...
Lecture 2 - Auburn University
... ■ Failing because of dc test ■ Failing because of RF Test ■ Failing speed (maximum clock frequency) test Multisite testing: Testing of several DUTs is parallelized to reduce the test cost. Test time for a typical device: 1 – 2 seconds. Testing cost of a device: 3 – 5 cents. ...
... ■ Failing because of dc test ■ Failing because of RF Test ■ Failing speed (maximum clock frequency) test Multisite testing: Testing of several DUTs is parallelized to reduce the test cost. Test time for a typical device: 1 – 2 seconds. Testing cost of a device: 3 – 5 cents. ...
WEG launches new cost-effective variable speed drive with
... WEG at SPS IPC Drives 2016: Hall 3, Stand 250 ...
... WEG at SPS IPC Drives 2016: Hall 3, Stand 250 ...
Compare and contrast Tuned Radio Frequency
... 'Frequency Generator' (RF Oscillator), called the 'Beat Frequency Oscillator' (BFO). The BFO is used to introduce a 'Local Carrier Frequency' (frequency of the carrier is 10 to 20 Hertz within that of the transmitter carrier frequency which is suppressed at the transmitter of the ham radio station w ...
... 'Frequency Generator' (RF Oscillator), called the 'Beat Frequency Oscillator' (BFO). The BFO is used to introduce a 'Local Carrier Frequency' (frequency of the carrier is 10 to 20 Hertz within that of the transmitter carrier frequency which is suppressed at the transmitter of the ham radio station w ...
1 Semester
... Protective Relays : Relaying review, characteristics and operating equations of relays. CT’s and PT’s differential relay, overcurrent relay, reverse power relay, distance relays, applications of relays. Unit 2 Static Relays : Principles of static relay comparators (Amplitude & phase comparator), Typ ...
... Protective Relays : Relaying review, characteristics and operating equations of relays. CT’s and PT’s differential relay, overcurrent relay, reverse power relay, distance relays, applications of relays. Unit 2 Static Relays : Principles of static relay comparators (Amplitude & phase comparator), Typ ...
Mitsubishi Electric Announces Sale of Switchable Power Amplifier Module for WCDMA Applications. （PDF：175KB）
... to lower operating voltage and improve efficiency at low and mid range output when operation repetitions are frequent. We have developed a power amplifier module that does not need an external DC/DC converter by using 2 chain amplifiers that can switch to respond to different outputs, guaranteeing e ...
... to lower operating voltage and improve efficiency at low and mid range output when operation repetitions are frequent. We have developed a power amplifier module that does not need an external DC/DC converter by using 2 chain amplifiers that can switch to respond to different outputs, guaranteeing e ...
Experiment 1-1
... Vary the Triggering Level and watch the changes on the screen and on the status line. What happens if the scope loses trigger? Select Slope/Coupling key and note the effect of switching the Triggering Mode from AC to DC by varying the DC offset on the function generator. Set the Triggering Mode to D ...
... Vary the Triggering Level and watch the changes on the screen and on the status line. What happens if the scope loses trigger? Select Slope/Coupling key and note the effect of switching the Triggering Mode from AC to DC by varying the DC offset on the function generator. Set the Triggering Mode to D ...
Utility frequency
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power plant to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia it is typically 60 Hz. Current usage by country or region is given in the list of mains power around the world.During the development of commercial electric power systems in the late 19th and early 20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220–240 V, and those that now use 60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses both) with no great technical reason to prefer one over the other and no apparent desire for complete worldwide standardization.Unless specified by the manufacturer to operate on both 50 and 60 Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency.