May 2003 Ray Marston - Understanding And Using OTA OP
... used to make the high-impedance output of the OTA availthe IC ideal for use in stereo amplifier applications. Figure able at a low-impedance level. Note in this latter case that 8 shows how two amplifiers of the Figure 7 type can be the output of the buffer stage is two base-emitter volt drops used ...
... used to make the high-impedance output of the OTA availthe IC ideal for use in stereo amplifier applications. Figure able at a low-impedance level. Note in this latter case that 8 shows how two amplifiers of the Figure 7 type can be the output of the buffer stage is two base-emitter volt drops used ...
Qucs - A Tutorial
... VB, at the base. When the bias ratio becomes less stiff, changes in base current flowing through R1 due to changes in HFE cause significant variations in VB. These variations result in changes in IE and IC. As with the universal circuit, you can improve performance of the stabilized circuit at any b ...
... VB, at the base. When the bias ratio becomes less stiff, changes in base current flowing through R1 due to changes in HFE cause significant variations in VB. These variations result in changes in IE and IC. As with the universal circuit, you can improve performance of the stabilized circuit at any b ...
Amateur Radio Technician Class Element 2 Course Presentation
... Lower capacitance is an advantage of using a Schottky diode in an RF switching circuit as compared to a standard silicon diode. (G6B06) • It is desirable to have low capacity across the diode junction in higher frequencies where the capacitive reactance forms a significant path around the diode wh ...
... Lower capacitance is an advantage of using a Schottky diode in an RF switching circuit as compared to a standard silicon diode. (G6B06) • It is desirable to have low capacity across the diode junction in higher frequencies where the capacitive reactance forms a significant path around the diode wh ...
doc - CERN
... Unlike the logarithmic amplifier described above, the transimpedance amplifier provides an output voltage linear proportional to the input current. The advantage of this behavior is a constant linearity error over the whole dynamic range. Unfortunately we have to amplify currents in the sub nA regio ...
... Unlike the logarithmic amplifier described above, the transimpedance amplifier provides an output voltage linear proportional to the input current. The advantage of this behavior is a constant linearity error over the whole dynamic range. Unfortunately we have to amplify currents in the sub nA regio ...
FAN6862 Highly Integrated Green-Mode PWM Controller
... which results in a higher power limit for high line voltage. FAN6862 has a sawtooth current limit threshold that increases progressively within a switching cycle, which provides lower current limit for high line and makes the actual power limit level almost constant over different line voltages of u ...
... which results in a higher power limit for high line voltage. FAN6862 has a sawtooth current limit threshold that increases progressively within a switching cycle, which provides lower current limit for high line and makes the actual power limit level almost constant over different line voltages of u ...
PCA9306 Dual Bidirectional I2C Bus and
... operates without use of a direction pin. The voltage supply range for VREF1 is 1.2 V to 3.3 V and the supply range for VREF2 is 1.8 V to 5.5 V. The PCA9306 can also be used to run two buses, one at 400-kHz operating frequency and the other at 100-kHz operating frequency. If the two buses are operati ...
... operates without use of a direction pin. The voltage supply range for VREF1 is 1.2 V to 3.3 V and the supply range for VREF2 is 1.8 V to 5.5 V. The PCA9306 can also be used to run two buses, one at 400-kHz operating frequency and the other at 100-kHz operating frequency. If the two buses are operati ...
OP177
... alternative to chopper-stabilized amplifiers. The OP177 provides chopper-type performance without the usual problems of high noise, low frequency chopper spikes, large physical size, limited common-mode input voltage range, and bulky external storage capacitors. ...
... alternative to chopper-stabilized amplifiers. The OP177 provides chopper-type performance without the usual problems of high noise, low frequency chopper spikes, large physical size, limited common-mode input voltage range, and bulky external storage capacitors. ...
Sector Phase Control Unit
... of the local microprocessor. The Phase Shifter’s output is routed to an RF switching matrix. Fiber Input B: This function block is identical to the Fiber Input A block described above, with the exception that the output drives a different input on the RF switching matrix. The RF switching matrix’s o ...
... of the local microprocessor. The Phase Shifter’s output is routed to an RF switching matrix. Fiber Input B: This function block is identical to the Fiber Input A block described above, with the exception that the output drives a different input on the RF switching matrix. The RF switching matrix’s o ...
CELLCIRC_2006
... cylinder made up of cell membrane as the surface of the cylinder and axoplasm (or dendroplasm/cytosol) as the internal medium. If this process is removed and placed in a bath of Ringer or oil, we can think of this cylinder with a small external resistance compared to the resistance of the cell membr ...
... cylinder made up of cell membrane as the surface of the cylinder and axoplasm (or dendroplasm/cytosol) as the internal medium. If this process is removed and placed in a bath of Ringer or oil, we can think of this cylinder with a small external resistance compared to the resistance of the cell membr ...
Fluke 434/PWR Power Analyzer
... • Demonstrate the benefit of efficiency improvements with energy consumption tests ...
... • Demonstrate the benefit of efficiency improvements with energy consumption tests ...
File tda1524a | allcomponents.ru
... packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is ...
... packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is ...
DATA SHEET
... packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is ...
... packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is ...
Visual Electricity Demonstrator
... A. Add the unit to a simple circuit which uses a battery, a switch and a light bulb. Closing the switch and completing the circuit shows the direction of flow while lighting the bulb. Switching the leads to the battery shows the reversal of the current. What happens to the charged particles in a cir ...
... A. Add the unit to a simple circuit which uses a battery, a switch and a light bulb. Closing the switch and completing the circuit shows the direction of flow while lighting the bulb. Switching the leads to the battery shows the reversal of the current. What happens to the charged particles in a cir ...
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.