Receivers - TalkTalk
... RF amplifier gain increases sensitivity One or more tuned circuits All the gain is at one frequency – feedback is a problem AF amplifier provides more power for loudspeakers ...
... RF amplifier gain increases sensitivity One or more tuned circuits All the gain is at one frequency – feedback is a problem AF amplifier provides more power for loudspeakers ...
Controlling and Monitoring Power-One Bricks and SIPs with Lattice
... conjunction with others (tracking). In addition, many devices also require the supplies to turn on with a monotonically increasing ramp. The ispPAC®-POWR1208 from Lattice is an In-system-Programmable mixed-signal stand-alone Power Manager IC that can monitor and sequence multiple supplies. This devi ...
... conjunction with others (tracking). In addition, many devices also require the supplies to turn on with a monotonically increasing ramp. The ispPAC®-POWR1208 from Lattice is an In-system-Programmable mixed-signal stand-alone Power Manager IC that can monitor and sequence multiple supplies. This devi ...
MAX730A/MAX738A/MAX744A 5V, Step-Down, Current-Mode PWM DC-DC Converters __________________General Description
... that can be delivered while maintaining regulation. The charging capacitor slowly raises the clamp on the error-amplifier output voltage, limiting surge currents at power-up by slowly increasing the cycle-by-cycle current-limit threshold. The 510kΩ resistor sets the SS clamp at a value high enough t ...
... that can be delivered while maintaining regulation. The charging capacitor slowly raises the clamp on the error-amplifier output voltage, limiting surge currents at power-up by slowly increasing the cycle-by-cycle current-limit threshold. The 510kΩ resistor sets the SS clamp at a value high enough t ...
MX321 AUTOMATIC VOLTAGE REGULATOR (AVR)
... pedestal and ramp control followed by a level detector and driver stage. Power control devices and rectifier vary the amount of exciter field current in response to the error signals produced by the main comparator. Syncronising circuit provides a short pulse near the zero point of one of the phases ...
... pedestal and ramp control followed by a level detector and driver stage. Power control devices and rectifier vary the amount of exciter field current in response to the error signals produced by the main comparator. Syncronising circuit provides a short pulse near the zero point of one of the phases ...
QRD1113/1114 Reflective Object Sensor
... 4. Soldering iron tip 1/16” (1.6 mm) minimum from housing. 5. As long as leads are not under any stress or spring tension. 6. D is the distance from the sensor face to the reflective surface. 7. Crosstalk (ICK) is the collector current measured with the indicated current on the input diode and with ...
... 4. Soldering iron tip 1/16” (1.6 mm) minimum from housing. 5. As long as leads are not under any stress or spring tension. 6. D is the distance from the sensor face to the reflective surface. 7. Crosstalk (ICK) is the collector current measured with the indicated current on the input diode and with ...
posted
... the capacitor is directly proportional to the charge on the plates, the voltage across the plates decreases exponentially with the same time constant as the charge. SET UP: The reading of the voltmeter obeys the equation V V0e –t /RC , where RC is the time constant. EXECUTE: (a) Solving for C and ...
... the capacitor is directly proportional to the charge on the plates, the voltage across the plates decreases exponentially with the same time constant as the charge. SET UP: The reading of the voltmeter obeys the equation V V0e –t /RC , where RC is the time constant. EXECUTE: (a) Solving for C and ...
Level 1
... (A) 0.1 Ω (B) 10 Ω (C) 12 Ω (D) 120 Ω (E) 1440 Ω P = V2/R 2. A heating coil is rated 1200 watts and 120 volts. What is the maximum value of the current under these ...
... (A) 0.1 Ω (B) 10 Ω (C) 12 Ω (D) 120 Ω (E) 1440 Ω P = V2/R 2. A heating coil is rated 1200 watts and 120 volts. What is the maximum value of the current under these ...
ADP3335 - Analog Devices
... low dropout, anyCAP voltage regulators. It operates with an input voltage range of 2.6 V to 12 V, and delivers a continuous load current up to 500 mA. The ADP3335 stands out from conventional low dropout regulators (LDOs) by using an enhanced process enabling it to offer performance advantages beyon ...
... low dropout, anyCAP voltage regulators. It operates with an input voltage range of 2.6 V to 12 V, and delivers a continuous load current up to 500 mA. The ADP3335 stands out from conventional low dropout regulators (LDOs) by using an enhanced process enabling it to offer performance advantages beyon ...
Subject: Experiment No - Department of Electrical Engineering
... 10. The final design decision that must be made is how to divide the sum of the resistors (RF + RS). The filter capacitor CF and the filter resistor RF form a low pass RC filter and cause a reduction in the ac voltage between the input at node 1 and the output at node 2. The reduction in the ratio V ...
... 10. The final design decision that must be made is how to divide the sum of the resistors (RF + RS). The filter capacitor CF and the filter resistor RF form a low pass RC filter and cause a reduction in the ac voltage between the input at node 1 and the output at node 2. The reduction in the ratio V ...
L547B_M4300EX (Page 1)
... event of an over voltage or under voltage (brownout). Power is automatically reconnected when voltage returns to a safe level, ...
... event of an over voltage or under voltage (brownout). Power is automatically reconnected when voltage returns to a safe level, ...
HIGH PERFORMANCE CAR AMPLIFIER
... nothing is covering it so it can vent heat off of the heatsink. Before you remove or uninstall the amplifier, refer to the list below for suggested solutions. ...
... nothing is covering it so it can vent heat off of the heatsink. Before you remove or uninstall the amplifier, refer to the list below for suggested solutions. ...
BM400/2 Series Analogue/Digital Insulation Continuity Testers
... The Megger® BM400/2 Series of autoranging insulation and continuity testers, provides simplicity of use in a hand-held instrument, which fully complies with British and International Wiring Regulations. The ease of use and comprehensive specifications are achieved using the latest electronic design ...
... The Megger® BM400/2 Series of autoranging insulation and continuity testers, provides simplicity of use in a hand-held instrument, which fully complies with British and International Wiring Regulations. The ease of use and comprehensive specifications are achieved using the latest electronic design ...
NJW44H11 - 80 V NPN, 10 A Power Transistor
... are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marki ...
... are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marki ...
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.