Elect Machine Notes
... usually used when the source frequency is low (below 20 kHz). A soft-iron-core transformer is very useful where the transformer must be physically small, yet efficient. The iron-core transformer provides better power transfer than does the air-core transformer. A transformer whose core is constructe ...
... usually used when the source frequency is low (below 20 kHz). A soft-iron-core transformer is very useful where the transformer must be physically small, yet efficient. The iron-core transformer provides better power transfer than does the air-core transformer. A transformer whose core is constructe ...
Signal Integrity and Colock System Design
... major contributor to jitter. Let’s look at some simple techniques that are implemented on IDT clock products that help deal with power supply noise and also minimize the amount of supply noise that originates from the clock devices. One technique is to use a voltage regulator for more sensitive circ ...
... major contributor to jitter. Let’s look at some simple techniques that are implemented on IDT clock products that help deal with power supply noise and also minimize the amount of supply noise that originates from the clock devices. One technique is to use a voltage regulator for more sensitive circ ...
Precautions for Avoiding Static Electricity E
... The worker must use a wrist or ankle strap to earth the body. In addition, use gloves to prevent direct contact with the devices. Avoid nylon gloves or work clothes, which tend to build up a charge. Footwear should have a resistance in the range of 100kΩ to 100MΩ. Note, however, that dirt and humidi ...
... The worker must use a wrist or ankle strap to earth the body. In addition, use gloves to prevent direct contact with the devices. Avoid nylon gloves or work clothes, which tend to build up a charge. Footwear should have a resistance in the range of 100kΩ to 100MΩ. Note, however, that dirt and humidi ...
1 - Telecommunications Industry Association
... division. Each direction of transmission for each subscriber uses either 4 kHz (single sideband) or 8 kHz (double sideband) of frequency spectrum. Generally, the carrier systems most susceptible to crosstalk are those that use double sideband modulation methods, 8 kHz of spectrum for each direction ...
... division. Each direction of transmission for each subscriber uses either 4 kHz (single sideband) or 8 kHz (double sideband) of frequency spectrum. Generally, the carrier systems most susceptible to crosstalk are those that use double sideband modulation methods, 8 kHz of spectrum for each direction ...
TLC7225 数据资料 dataSheet 下载
... microprocessors. Each DAC includes an output buffer amplifier capable of driving up to 5 mA of output current. The TLC7225 performance is specified for input reference voltages from 2 V to VDD – 4 V with dual supplies. The voltage-mode configuration of the DACs allow the TLC7225 to be operated from ...
... microprocessors. Each DAC includes an output buffer amplifier capable of driving up to 5 mA of output current. The TLC7225 performance is specified for input reference voltages from 2 V to VDD – 4 V with dual supplies. The voltage-mode configuration of the DACs allow the TLC7225 to be operated from ...
BJT Characteristics - IIE
... Amplification is the process of linearly increasing the amplitude of an electrical signal. a BJT exhibits current gain (called b). When a BJT is biased in the active (or linear) region, the BE junction has a low resistance due to forward bias and the BC junction has a high resistance due to reve ...
... Amplification is the process of linearly increasing the amplitude of an electrical signal. a BJT exhibits current gain (called b). When a BJT is biased in the active (or linear) region, the BE junction has a low resistance due to forward bias and the BC junction has a high resistance due to reve ...
2042 Cable Locator
... sequence and has a voltage (up to 700V) and frequency range suitable for commercial and industrial applications. Test probes supplied with the instrument have a variable clamping range for safe contact, especially in industrial sockets. ...
... sequence and has a voltage (up to 700V) and frequency range suitable for commercial and industrial applications. Test probes supplied with the instrument have a variable clamping range for safe contact, especially in industrial sockets. ...
Read and/or our Electrical Dictionary here.
... wire or piece of machinery.The quantity of electricity is being measured. Volt/Voltage = The unit of electrical pressure. Watts = The measure of the amount of energy that’s being used. We read this very clear, easy to understand explanation of electrical measures on WikiAnswers.com and want to share ...
... wire or piece of machinery.The quantity of electricity is being measured. Volt/Voltage = The unit of electrical pressure. Watts = The measure of the amount of energy that’s being used. We read this very clear, easy to understand explanation of electrical measures on WikiAnswers.com and want to share ...
Reset Circuit Applications in the HT66Fx0 Series MCU
... clearing of the TO and PDF flags to “0.” When using this reset function, the POR time constant is smaller, therefore the power on rise time should be as low as possible (no less than 0.035V/ms by specification requirements) and the VDD power-on voltage should be no more than 0.1V when power is appli ...
... clearing of the TO and PDF flags to “0.” When using this reset function, the POR time constant is smaller, therefore the power on rise time should be as low as possible (no less than 0.035V/ms by specification requirements) and the VDD power-on voltage should be no more than 0.1V when power is appli ...
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.