This course contains - College of Micronesia
... symbols. Identify the value, power rating and tolerance of resistors using various types of industry codes. 3. Describe the purpose and types of switches, fuses and circuit breakers and identify their schematic symbols. 4. Define magnetism and electromagnetism and their characteristics; describe how ...
... symbols. Identify the value, power rating and tolerance of resistors using various types of industry codes. 3. Describe the purpose and types of switches, fuses and circuit breakers and identify their schematic symbols. 4. Define magnetism and electromagnetism and their characteristics; describe how ...
SA604A High performance low power FM IF system Philips Semiconductors
... The high gain and bandwidth of the SA604A in combination with its very low currents permit circuit implementation with superior performance. However, stability must be maintained and, to do that, every possible feedback mechanism must be addressed. These mechanisms are: 1) Supply lines and ground, 2 ...
... The high gain and bandwidth of the SA604A in combination with its very low currents permit circuit implementation with superior performance. However, stability must be maintained and, to do that, every possible feedback mechanism must be addressed. These mechanisms are: 1) Supply lines and ground, 2 ...
Elec and Comp Tech 62B Semiconductor Devices
... oscillator circuit produces a periodic waveform output with the power supply being the only required input The output can be a sine, square, ramp, or other waveform An additional input can be used to synchronize the oscillation Two major classifications of oscillators Feedback oscillators Re ...
... oscillator circuit produces a periodic waveform output with the power supply being the only required input The output can be a sine, square, ramp, or other waveform An additional input can be used to synchronize the oscillation Two major classifications of oscillators Feedback oscillators Re ...
MC12015 MC12016 MC12017 Dual Modulus Prescaler
... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any ...
... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any ...
LM140K Series 3-Terminal Positive Regulators
... Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on ...
... Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on ...
BD6966NUX
... supply lines. An external direction diode can be added. Power supply line Back electromotive force causes regenerated current to power supply line, therefore take a measure such as placing a capacitor between power supply and GND for routing regenerated current. And fully ensure that the capacitor c ...
... supply lines. An external direction diode can be added. Power supply line Back electromotive force causes regenerated current to power supply line, therefore take a measure such as placing a capacitor between power supply and GND for routing regenerated current. And fully ensure that the capacitor c ...
Arrester Reference Voltage
... When a stiff or strong AC source is not available for a Vref measurement, a weak source can also provide good results. An example of a weak source would be a typical AC High-Pot tester. These devices have currents available in the range of 1-10 mA maximum but with significant wave distortion at that ...
... When a stiff or strong AC source is not available for a Vref measurement, a weak source can also provide good results. An example of a weak source would be a typical AC High-Pot tester. These devices have currents available in the range of 1-10 mA maximum but with significant wave distortion at that ...
ECE1250F14_Lab4_ThevEquiv
... Thevenin equivalent model with symbolic Thevenin resistance, RThev, the voltagedivider formula, and algebra to solve for the value that the RThev must have. For the second method of finding the value of RThev, disconnect the +15 V and –15 V power supplies from the circuit. After this is done, make s ...
... Thevenin equivalent model with symbolic Thevenin resistance, RThev, the voltagedivider formula, and algebra to solve for the value that the RThev must have. For the second method of finding the value of RThev, disconnect the +15 V and –15 V power supplies from the circuit. After this is done, make s ...
BDTIC C C M - P F C
... Over-Voltage Protection (OVP) Whenever VOUT exceeds the rated value by 5%, the over-voltage protection OVP is active as shown in Figure 6. This is implemented by sensing the voltage at pin VSENSE with respect to a reference voltage of 3.15V. A VSENSE voltage higher than 3.15V will immediately reduce ...
... Over-Voltage Protection (OVP) Whenever VOUT exceeds the rated value by 5%, the over-voltage protection OVP is active as shown in Figure 6. This is implemented by sensing the voltage at pin VSENSE with respect to a reference voltage of 3.15V. A VSENSE voltage higher than 3.15V will immediately reduce ...
Electrical Protection of 48 and 24 V Battery Strings and DC Plant
... DC‐Rated Fuses Typically 100,000 A Breakers Typically 10, 22, 42 and 65 k.A.I.C. DC Breakers at Higher Voltages (Such as for 405 or 540 VDC UPS Buses or 380 VDC Systems) Are Much Larger Than AC Breakers of Equivalent Ampere Rating Because DC Has No Zero Crossing 120 Times/Second, So it is ...
... DC‐Rated Fuses Typically 100,000 A Breakers Typically 10, 22, 42 and 65 k.A.I.C. DC Breakers at Higher Voltages (Such as for 405 or 540 VDC UPS Buses or 380 VDC Systems) Are Much Larger Than AC Breakers of Equivalent Ampere Rating Because DC Has No Zero Crossing 120 Times/Second, So it is ...
IGBT (Insulated Gate Bipolar Transistor) 1 Differences Between MOSFET and IGBT
... The Miller-effect is nothing else than the feedback of the collector-emitter voltage VCE via the gate-collector capacitance CGC on the gate. This means a change of VCE has the same effect as an internal current source into the bias circuit, where the current is given by the expression ig = CGC (VCE) ...
... The Miller-effect is nothing else than the feedback of the collector-emitter voltage VCE via the gate-collector capacitance CGC on the gate. This means a change of VCE has the same effect as an internal current source into the bias circuit, where the current is given by the expression ig = CGC (VCE) ...
AD8203 数据手册DataSheet 下载
... Changes to Specifications Table...................................................... 3 Changes to Caption on Figure 6 and Figure 8 .............................. 6 Changes to Figure 12........................................................................ 7 Added Figure 14 to Figure 23............ ...
... Changes to Specifications Table...................................................... 3 Changes to Caption on Figure 6 and Figure 8 .............................. 6 Changes to Figure 12........................................................................ 7 Added Figure 14 to Figure 23............ ...
LT1166 - Power Output Stage Automatic Bias
... RIN, current that was flowing in R1 and Q1 is now supplied through RIN. This effect reduces the current in mirror Q5/ Q6. The reduced current has the effect of reducing the drop on RT, and VT rises to make VO track VIN. The open-loop voltage gain VO/(VIN – VPIN2) can be increased by replacing RT and ...
... RIN, current that was flowing in R1 and Q1 is now supplied through RIN. This effect reduces the current in mirror Q5/ Q6. The reduced current has the effect of reducing the drop on RT, and VT rises to make VO track VIN. The open-loop voltage gain VO/(VIN – VPIN2) can be increased by replacing RT and ...
experimental procedure
... To investigate different oscillator types and to compare with each other. THEORY: Oscillator is a circuit that product a signal whose frequency and amplitude is defined. Oscillators can product signals in different forms. The frequency and amplitude of these signals could have been regulated. Oscill ...
... To investigate different oscillator types and to compare with each other. THEORY: Oscillator is a circuit that product a signal whose frequency and amplitude is defined. Oscillators can product signals in different forms. The frequency and amplitude of these signals could have been regulated. Oscill ...
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.