Условие - Reshaem
... current: direct and alternating. A direct current flows through a conducting circuit in one direction only. It flows provided a direct voltage source is applied to the circuit. An alternating current is a current that changes its direction of flow through a circuit. It flows provided an alternating ...
... current: direct and alternating. A direct current flows through a conducting circuit in one direction only. It flows provided a direct voltage source is applied to the circuit. An alternating current is a current that changes its direction of flow through a circuit. It flows provided an alternating ...
Battery Charge Regulator for a photovoltaic power system using
... it is the first time that we deal with transformer in these details . we have studied the rectifiers in Power Electronics course but it is the first time we see the output at the oslliscope by our work. we notice what useful we get from using a fuses for protection. It is the first time we deal with ...
... it is the first time that we deal with transformer in these details . we have studied the rectifiers in Power Electronics course but it is the first time we see the output at the oslliscope by our work. we notice what useful we get from using a fuses for protection. It is the first time we deal with ...
Ohm`s law - schoolphysics
... The current through a certain wire depends on two things: (a) the voltage (potential difference) between its ends (b) the resistance of the wire The way in which the current changes as the voltage is changed was discovered by Ohm. You can verify his results with the following experiment. STUDENT INV ...
... The current through a certain wire depends on two things: (a) the voltage (potential difference) between its ends (b) the resistance of the wire The way in which the current changes as the voltage is changed was discovered by Ohm. You can verify his results with the following experiment. STUDENT INV ...
Gate
... • Generally speaking: – range of 0 to 2 volts – ‘low’ – 0 – Range of 2 to 5 volts – ‘high’ – 1 ...
... • Generally speaking: – range of 0 to 2 volts – ‘low’ – 0 – Range of 2 to 5 volts – ‘high’ – 1 ...
Higher Physics Content Statements
... During manufacture, the conductivity of semiconductors can be controlled, resulting in two types: p-type and n-type. When p-type and n-type material are joined, a layer is formed at the junction. The electrical properties of this layer are used in a number of devices. Solar cells are p-n junctions d ...
... During manufacture, the conductivity of semiconductors can be controlled, resulting in two types: p-type and n-type. When p-type and n-type material are joined, a layer is formed at the junction. The electrical properties of this layer are used in a number of devices. Solar cells are p-n junctions d ...
COMBINING THREE VERY LOW SUPPLY CURRENT ANALOG ICS
... many sources. This temperature sensor generates an output voltage proportional to the ambient temperature in degree Celsius and exhibits a scale factor of +10mV/ºC. This particular temperature sensor provides a linear output response with a maximum output voltage of 1500mV corresponding to a 150ºC a ...
... many sources. This temperature sensor generates an output voltage proportional to the ambient temperature in degree Celsius and exhibits a scale factor of +10mV/ºC. This particular temperature sensor provides a linear output response with a maximum output voltage of 1500mV corresponding to a 150ºC a ...
Ohm`s Law Worksheet
... 4. Electric pressure (E) is measured in _______________ (____): the rate of electron flow (____) is measured in amps (_____), the ________________ (R) is measured in ohms (_____). 5. In a circuit, voltage and current are (a) directly proportional, (b) inversely proportional, (c) not proportional. 6. ...
... 4. Electric pressure (E) is measured in _______________ (____): the rate of electron flow (____) is measured in amps (_____), the ________________ (R) is measured in ohms (_____). 5. In a circuit, voltage and current are (a) directly proportional, (b) inversely proportional, (c) not proportional. 6. ...
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.