OHM-300 - Educational Innovations
... units. Each one measures something different. Watts are a basic measure of power. Volts are the standard unit of electromotive force. You can think of volts literally as a pushing force. The higher the voltage, the harder the electricity is being pushed through the circuit. Amps are the equivalent o ...
... units. Each one measures something different. Watts are a basic measure of power. Volts are the standard unit of electromotive force. You can think of volts literally as a pushing force. The higher the voltage, the harder the electricity is being pushed through the circuit. Amps are the equivalent o ...
The development of high-voltage measuring techniques
... particle beams and lasers) and in EMP simulators. These voltages may change in characteristic times ranging from hours (de voltages) through milliseconds (50/60 Hz) to nanoseconds (impulse voltages). Voltage measuring devices must be able to give an accurate reproduction of these signals at a level ...
... particle beams and lasers) and in EMP simulators. These voltages may change in characteristic times ranging from hours (de voltages) through milliseconds (50/60 Hz) to nanoseconds (impulse voltages). Voltage measuring devices must be able to give an accurate reproduction of these signals at a level ...
Electricity
... • Many appliances use current from the same circuit causing more heat in the wires. To keep wires from causing a fire, household circuit include a fuse or circuit breaker. • A fuse is a small glass tube with a piece of metal inside that melts if the current is too high breaking the circuit. • To res ...
... • Many appliances use current from the same circuit causing more heat in the wires. To keep wires from causing a fire, household circuit include a fuse or circuit breaker. • A fuse is a small glass tube with a piece of metal inside that melts if the current is too high breaking the circuit. • To res ...
PTH08T210W
... This feature also offers enhanced stability when used with ultra-low ESR output capacitors. The PTH08T210W incorporates a comprehensive list of standard features. They include on/off inhibit, a differential remote output voltage sense which ensures tight load regulation, and an output overcurrent an ...
... This feature also offers enhanced stability when used with ultra-low ESR output capacitors. The PTH08T210W incorporates a comprehensive list of standard features. They include on/off inhibit, a differential remote output voltage sense which ensures tight load regulation, and an output overcurrent an ...
TPS77033 数据资料 dataSheet 下载
... The TPS770xx uses a PMOS pass element to dramatically reduce both dropout voltage and supply current over more conventional PNP-pass-element LDO designs. The PMOS pass element is a voltage-controlled device and, unlike a PNP transistor, it does not require increased drive current as output current i ...
... The TPS770xx uses a PMOS pass element to dramatically reduce both dropout voltage and supply current over more conventional PNP-pass-element LDO designs. The PMOS pass element is a voltage-controlled device and, unlike a PNP transistor, it does not require increased drive current as output current i ...
REG103-25 数据资料 dataSheet 下载
... Care should be taken in high current applications to avoid ground currents flowing in the circuit board traces causing voltage drops between points on the circuit. If voltage drops occur on the circuit board ground that causes the load ground voltage to be much lower than the ground voltage seen by ...
... Care should be taken in high current applications to avoid ground currents flowing in the circuit board traces causing voltage drops between points on the circuit. If voltage drops occur on the circuit board ground that causes the load ground voltage to be much lower than the ground voltage seen by ...
Project 4 - Rensselaer Polytechnic Institute
... Input signal alters duty cycle and pulse width of carrier. Higher input voltage means pulses with longer pulse widths and higher duty ...
... Input signal alters duty cycle and pulse width of carrier. Higher input voltage means pulses with longer pulse widths and higher duty ...
PDF
... for both overload and short-circuit protection resulting in easily coordinated protection of electric circuits, and a pre-alarm function that enables predictive and preventive maintenance. However, demands are increasing for even higher performance and functionality, such as more detailed settings f ...
... for both overload and short-circuit protection resulting in easily coordinated protection of electric circuits, and a pre-alarm function that enables predictive and preventive maintenance. However, demands are increasing for even higher performance and functionality, such as more detailed settings f ...
Electric Heating Equipment
... circuit selection current (whichever is larger) (440.41) and the controller must also have a locked rotor current rating equal to or greater than the locked rotor current of the compressor [440.41(A)]. Where the controller serves a hermetic motor-compressor(s) plus other loads, the controller rating ...
... circuit selection current (whichever is larger) (440.41) and the controller must also have a locked rotor current rating equal to or greater than the locked rotor current of the compressor [440.41(A)]. Where the controller serves a hermetic motor-compressor(s) plus other loads, the controller rating ...
MAX17710 Energy-Harvesting Charger and Protector General Description Features
... internal CHG shunt provides the voltage limit at the pin in response to 50mA input. Larger currents must be shunted with an external clamp to protect the CHG pin from damage. Note 3: LCE mode is entered by pulsing AE high, then pulsing AE low. Note 4: For logic-high, connect LCE to the REG output. ...
... internal CHG shunt provides the voltage limit at the pin in response to 50mA input. Larger currents must be shunted with an external clamp to protect the CHG pin from damage. Note 3: LCE mode is entered by pulsing AE high, then pulsing AE low. Note 4: For logic-high, connect LCE to the REG output. ...
Searching for Patterns in Series and Parallel Circuits
... 2.2 Parallel Circuit - Connect 3 bulbs in parallel. DIAGRAM using half of a page! a. Add an ammeter to measure the TOTAL current. Draw it in the diagram and record the total current next to the ammeter in the diagram. b. Take the ammeter out of the circuit and put it in the circuit again to measure ...
... 2.2 Parallel Circuit - Connect 3 bulbs in parallel. DIAGRAM using half of a page! a. Add an ammeter to measure the TOTAL current. Draw it in the diagram and record the total current next to the ammeter in the diagram. b. Take the ammeter out of the circuit and put it in the circuit again to measure ...
Datasheet - Monolithic Power System
... Gate driver. This is the DIM signal from internal control logic, it is used to control the color temperature and brightness for warm sunset dimming or drive an external dummy Load to enlarge the dimming depth.. Internal Low-Side main MOSFET Drain. It is connected to the source of the external high-s ...
... Gate driver. This is the DIM signal from internal control logic, it is used to control the color temperature and brightness for warm sunset dimming or drive an external dummy Load to enlarge the dimming depth.. Internal Low-Side main MOSFET Drain. It is connected to the source of the external high-s ...
CONDITIONS OF CERTIFICATION Instructions according to clause
... Optionally the motor is equipped with thermal protectors (break contacts) instead of temperature sensors (PTC thermistors). The number, the location and the rated operating temperature of these thermal protectors are identical with those of the temperature sensors. Optionally the motor is equipped w ...
... Optionally the motor is equipped with thermal protectors (break contacts) instead of temperature sensors (PTC thermistors). The number, the location and the rated operating temperature of these thermal protectors are identical with those of the temperature sensors. Optionally the motor is equipped w ...
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.