Zetex - DN78, ZXSC310 with reverse polarity protection
... The schematic diagram shown in Figure 1 is a typical example of the ZXSC310 used in a LED flashlight application. The input voltage can either be one or two alkaline cells. If the battery is put in the flashlight the wrong way, the reverse polarity can damage the ZXSC310 and switching transistor, Q1 ...
... The schematic diagram shown in Figure 1 is a typical example of the ZXSC310 used in a LED flashlight application. The input voltage can either be one or two alkaline cells. If the battery is put in the flashlight the wrong way, the reverse polarity can damage the ZXSC310 and switching transistor, Q1 ...
TechTopics
... low, of the order of 20-50 volts. In turn, the arc voltage will be essentially equal to the voltage across the capacitor, since the impedance of the fault is nearly zero. Thus, at the instant of interruption of current, the voltage across the vacuum interrupter and the voltage across the capacitor a ...
... low, of the order of 20-50 volts. In turn, the arc voltage will be essentially equal to the voltage across the capacitor, since the impedance of the fault is nearly zero. Thus, at the instant of interruption of current, the voltage across the vacuum interrupter and the voltage across the capacitor a ...
Avalanche Transit Time Devices
... ii) TRAPPAT (Trapped plasma avalanche triggered transit operation). 20 to 60% Another type of active microwave device is BARITT (barrier injected transit time diode) ...
... ii) TRAPPAT (Trapped plasma avalanche triggered transit operation). 20 to 60% Another type of active microwave device is BARITT (barrier injected transit time diode) ...
原文 DC GENENRATORS 1. INTRODUCTION For all practical
... example would be where feeder lines could break and short circuit the generator. The short-circuit current, however, is then limited to a “safe” value. The terminal characteristic for this type of generator is also shown in Fig.9. Compound generators are used more extensively than the other types be ...
... example would be where feeder lines could break and short circuit the generator. The short-circuit current, however, is then limited to a “safe” value. The terminal characteristic for this type of generator is also shown in Fig.9. Compound generators are used more extensively than the other types be ...
lecture2
... Quiz 1 - Week 3 - Lecture NEXT MONDAY Will cover to the end of Module 1 which will be completed next lecture before the quiz. ...
... Quiz 1 - Week 3 - Lecture NEXT MONDAY Will cover to the end of Module 1 which will be completed next lecture before the quiz. ...
Electronic Components
... • Rectifiers are diodes that are specially made to handle large currents (>1A) • They are often packaged in a ‘bridge’ as this allows more effective rectification • Connections and values are shown on the package ...
... • Rectifiers are diodes that are specially made to handle large currents (>1A) • They are often packaged in a ‘bridge’ as this allows more effective rectification • Connections and values are shown on the package ...
The UC1901 Simplifies the Problem of Isolated
... The error amplifier on the chip has a typical open loop gain of 60dB and is internally compensated to have a unity gain bandwidth of just above 1MHz. Both of these characteristics are measured with respect to the compensation node (Pin 12). As shown in Figure 3a, the amplified error signal is intern ...
... The error amplifier on the chip has a typical open loop gain of 60dB and is internally compensated to have a unity gain bandwidth of just above 1MHz. Both of these characteristics are measured with respect to the compensation node (Pin 12). As shown in Figure 3a, the amplified error signal is intern ...
EES612-Lab-1 Single - Department of Electrical and Computer
... Transformers are widely applied in many electrical systems, small or large. A few of their most tangible areas of application include long-distance, bulk power transmission systems, medical and consumer electronic devices for level shifting and galvanic isolation, audio, video, and radio systems for ...
... Transformers are widely applied in many electrical systems, small or large. A few of their most tangible areas of application include long-distance, bulk power transmission systems, medical and consumer electronic devices for level shifting and galvanic isolation, audio, video, and radio systems for ...
Presentazione di PowerPoint
... supply voltage (V)/insulation resistance (R). Low gain dependence. ...
... supply voltage (V)/insulation resistance (R). Low gain dependence. ...
Model Paper-Advanced Measurements - IESL e
... (ii) During a test the current was measured as 30.4 A, flowing in a resistor of 0.105. Later on it is discovered that the ammeter reading was low by 1.2% and the marked resistance was high by 0.3%. Determine the true value of power as a percentage of the power that was originally calculated. (iii) ...
... (ii) During a test the current was measured as 30.4 A, flowing in a resistor of 0.105. Later on it is discovered that the ammeter reading was low by 1.2% and the marked resistance was high by 0.3%. Determine the true value of power as a percentage of the power that was originally calculated. (iii) ...
DC1602A - Linear Technology
... 6V is chosen because of the 10V voltage rating of the output capacitors. Higher output voltage can be easily achieved with higher voltage rated output capacitors. The ideal load to be used with this demo board is a single LED, such as PT120 from Luminus Devices. Smaller LEDs may not be able to handl ...
... 6V is chosen because of the 10V voltage rating of the output capacitors. Higher output voltage can be easily achieved with higher voltage rated output capacitors. The ideal load to be used with this demo board is a single LED, such as PT120 from Luminus Devices. Smaller LEDs may not be able to handl ...
Design of a Modified Cockcroft Walton Generator
... voltage multiplier. Experimentally various input voltages were studied for up to three stage symmetric Cockcroft Walton voltage multiplier and the results were compared with the theoretically expected values. Circuit simulation software called Circuit Maker was used to simulate output waveforms from ...
... voltage multiplier. Experimentally various input voltages were studied for up to three stage symmetric Cockcroft Walton voltage multiplier and the results were compared with the theoretically expected values. Circuit simulation software called Circuit Maker was used to simulate output waveforms from ...
MM74HC573 3-STATE Octal D
... When the LATCH ENABLE(LE) input is HIGH, the Q outputs will follow the D inputs. When the LATCH ENABLE goes LOW, data at the D inputs will be retained at the outputs until LATCH ENABLE returns HIGH again. When a HIGH logic level is applied to the OUTPUT CONTROL OC input, all outputs go to a HIGH imp ...
... When the LATCH ENABLE(LE) input is HIGH, the Q outputs will follow the D inputs. When the LATCH ENABLE goes LOW, data at the D inputs will be retained at the outputs until LATCH ENABLE returns HIGH again. When a HIGH logic level is applied to the OUTPUT CONTROL OC input, all outputs go to a HIGH imp ...
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.