Amplifiers | Packages
... - Relatively low noise with excellent linearity (low distortion) - Bias medium power transistors (<4 watts) at 10-20% loss to achieve an optimum tradeoff between noise figure and distortion - Low frequency (<200 MHz) designs - push-pull configuration using Si bipolar devices in a patented feedback t ...
... - Relatively low noise with excellent linearity (low distortion) - Bias medium power transistors (<4 watts) at 10-20% loss to achieve an optimum tradeoff between noise figure and distortion - Low frequency (<200 MHz) designs - push-pull configuration using Si bipolar devices in a patented feedback t ...
ENEE417 Final Lab Report: Power Amplifier Design
... The graphs in Figure 17 above were created with LabView. The top graph in Figure 17 shows gain amplitude vs. frequency log-log plot, and the bottom graph in Figure 17 shows gain phase vs. frequency linear-log plot. The amplitude vs. frequency plot has a steady ripple. The reason for this ripple is t ...
... The graphs in Figure 17 above were created with LabView. The top graph in Figure 17 shows gain amplitude vs. frequency log-log plot, and the bottom graph in Figure 17 shows gain phase vs. frequency linear-log plot. The amplitude vs. frequency plot has a steady ripple. The reason for this ripple is t ...
Circuit Note CN-0175
... 84 dB SNR and Excellent Channel-to-Channel Matching CIRCUIT FUNCTION AND BENEFITS Cost sensitive, high channel count applications that require wide dynamic range can effectively use the AD7607 8-channel integrated data acquisition system (DAS) with on-chip 14-bit SAR ADCs to achieve greater than 80 ...
... 84 dB SNR and Excellent Channel-to-Channel Matching CIRCUIT FUNCTION AND BENEFITS Cost sensitive, high channel count applications that require wide dynamic range can effectively use the AD7607 8-channel integrated data acquisition system (DAS) with on-chip 14-bit SAR ADCs to achieve greater than 80 ...
AN1045/D
... or ac. A combination of both results when the triac switches the start winding in capacitor start motors. In the simple series connection, both triacs operate with an identical leakage current which is less than that of either part operated alone at the same voltage. The voltages across the devices ...
... or ac. A combination of both results when the triac switches the start winding in capacitor start motors. In the simple series connection, both triacs operate with an identical leakage current which is less than that of either part operated alone at the same voltage. The voltages across the devices ...
2009 HOMEBREW CHALLENGE50 WATT AMPLIFIER ENTRY
... power that the mosfets can sustain. For a push-pull Class AB or B amplifier, the drain to drain impedance can be calculated from the formula Rdd = 2*(Vsupply)^2/Pout (see Note 1, also see sidebar for derivation). In this case we calculate Rdd to be [2*(13.8)^2]/50 or 7.6 ohms. The voltage swing on t ...
... power that the mosfets can sustain. For a push-pull Class AB or B amplifier, the drain to drain impedance can be calculated from the formula Rdd = 2*(Vsupply)^2/Pout (see Note 1, also see sidebar for derivation). In this case we calculate Rdd to be [2*(13.8)^2]/50 or 7.6 ohms. The voltage swing on t ...
(1)Ceramic capacitor
... The primary characteristics of a resistor are the resistance, the tolerance, maximum working voltage and the power rating. Other characteristics include temperature coefficient, noise, and inductance. Less well-known is critical resistance, the value ...
... The primary characteristics of a resistor are the resistance, the tolerance, maximum working voltage and the power rating. Other characteristics include temperature coefficient, noise, and inductance. Less well-known is critical resistance, the value ...
p37-39 Feature Ixys - Power Electronics Europe
... and emitter. As the switching frequency chosen is 30kHz, it generates no audible noise, but still allows a small coil size to handle up to 1.8kW. Output power levels from 1 to 3kW are possible with some design modifications and choice of appropriately rated IGBTs. The mains supply voltage is full wa ...
... and emitter. As the switching frequency chosen is 30kHz, it generates no audible noise, but still allows a small coil size to handle up to 1.8kW. Output power levels from 1 to 3kW are possible with some design modifications and choice of appropriately rated IGBTs. The mains supply voltage is full wa ...
Simple Broadband Solid-State Power Amplifiers
... 144, 222, and 432 MHz, falling off to around 5 watts at 50 MHz. Reducing the voltage to 13 volts narrows the bandwidth and lowers the output power to 1 or 2 watts. Drain current increases to nearly an amp at full power, so the efficiency is mediocre. The feedback resistor was initially a single 160 ...
... 144, 222, and 432 MHz, falling off to around 5 watts at 50 MHz. Reducing the voltage to 13 volts narrows the bandwidth and lowers the output power to 1 or 2 watts. Drain current increases to nearly an amp at full power, so the efficiency is mediocre. The feedback resistor was initially a single 160 ...
ADM1485 数据手册DataSheet 下载
... The RS-422 standard specifies data rates up to 10 MBaud and line lengths up to 4000 ft. A single driver can drive a transmission line with up to 10 receivers. In order to cater to true multipoint communications, the RS-485 standard was defined. This standard meets or exceeds all the requirements of ...
... The RS-422 standard specifies data rates up to 10 MBaud and line lengths up to 4000 ft. A single driver can drive a transmission line with up to 10 receivers. In order to cater to true multipoint communications, the RS-485 standard was defined. This standard meets or exceeds all the requirements of ...
Chapter 20: Quasi-Resonant Converters
... A test to determine the topology of a resonant switch network Replace converter elements by their high-frequency equivalents: • Independent voltage source Vg: short circuit • Filter capacitors: short circuits • Filter inductors: open circuits The resonant switch network remains. If the converter co ...
... A test to determine the topology of a resonant switch network Replace converter elements by their high-frequency equivalents: • Independent voltage source Vg: short circuit • Filter capacitors: short circuits • Filter inductors: open circuits The resonant switch network remains. If the converter co ...
Series Circuits
... divided by the total resistance of the circuit. This is Ohm’s law. • The voltage drop, or potential difference, across each device depends directly on its resistance. • The sum of the voltage drops across the individual devices is equal to the total voltage supplied by the source. ...
... divided by the total resistance of the circuit. This is Ohm’s law. • The voltage drop, or potential difference, across each device depends directly on its resistance. • The sum of the voltage drops across the individual devices is equal to the total voltage supplied by the source. ...
Circuits II - Uplift North Hills Prep
... through the path with lesser resistance. To find current across parallel resistors … 1) Find the total current in a circuit 2) Find the voltage drop across the parallel resistors ...
... through the path with lesser resistance. To find current across parallel resistors … 1) Find the total current in a circuit 2) Find the voltage drop across the parallel resistors ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.