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RF5122 3V TO 3.6V, 2.4GHz TO 2.5GHz LINEAR POWER AMPLIFIER Features
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... band. The RF5122 has integrated input, interstage and output matching components thus allowing minimal bill of material (BOM) parts count in end applications. The RF5122 is designed primarily for IEEE802.11b/g/n WiFi applications where the available supply voltage and current are limited. This ampli ...
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... of this sort would be most useful for measuring the voltage across a high impedance sample at low temperature. In this application, a high input impedance and low power dissipation are imperative. Here, the measured amplifier characteristics are presented and the possible improvements of this circui ...
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... by a counter electromotive force of the motor, take necessary measures such as putting a Capacitor between the power source and the ground as a passageway for the regenerative current. Be sure to connect a Capacitor of proper capacitance (0.1μF to 10μF) between the power source and the ground at the ...
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... voltage (most often 120VAC @ 60 Hz) to DC voltage (typically 5 to 20 VDC). To accomplish this, diodes are used to produce either positive or negative DC voltage from an alternating source in a process called rectification. The diode is, therefore, an essential element of every DC power supply. The p ...
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... as large as 1000pF at unity gain and not oscillate. The scope photos (Figure 3 and Figure 4) above show the LM6142 driving a l000pF load. In Figure 3, the upper trace is with no capacitive load and the lower trace is with a 1000pF load. Here we are operating on ± 12V supplies with a 20 VPP pulse. Ex ...
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... TA = +100oC to +125oC (Package F) . . . . . . . . Derate Linearly at 8mW/ oC to 300mW Operating Temperature Range, TA Package Type F . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC Storage Temperature, TSTG . . . . . . . . . . . . . . . . . . -65oC to +150oC Lead Temperature (Dur ...
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... Activity #4 – Introduction to the Oscilloscope The oscilloscope is a measurement instrument that shows waveforms as functions of time in a tiny CRT. You can display 2 waveforms, A and B, at the same time. 1. Turn on the oscilloscope with the green POWER button. 2. Connect the terminals for channel A ...
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... load connected. We can compensate for the change in voltage by adding shunt compensation at the load. In this way the voltage can be regulated to a given reference, say 1 pu. In this way the receiving end voltage may change by only a very small amount between no-load an full-load. Therefore, a decre ...
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Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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