Electrical Formulas
... At some distance from the terminals, depending upon wire size, the L-N fault current is lower than the L-L fault current. The 1.5 multiplier is an approximation and will theoretically vary from 1.33 to 1.67. These figures are based on change in turns ratio between primary and secondary, infinite sou ...
... At some distance from the terminals, depending upon wire size, the L-N fault current is lower than the L-L fault current. The 1.5 multiplier is an approximation and will theoretically vary from 1.33 to 1.67. These figures are based on change in turns ratio between primary and secondary, infinite sou ...
NJU7380
... It can control the stepping motor driver with STEP&DIR input signal to Phase input methods such as NJM3775, NJM3777. NJU7380 is also including Auto Current Down(ACD) circuit witch is suitable for reducing power dissipation of power devices and motor. ■ LOGIC BLOCK NJU7380 contains all phase logic ne ...
... It can control the stepping motor driver with STEP&DIR input signal to Phase input methods such as NJM3775, NJM3777. NJU7380 is also including Auto Current Down(ACD) circuit witch is suitable for reducing power dissipation of power devices and motor. ■ LOGIC BLOCK NJU7380 contains all phase logic ne ...
4. Electrical characteristics
... 4.11 Quick discharge coils (optional) Quick discharge coils allow a very fast discharge time (less than 10 s). Caution : In any case (without or with quick discharge coils), a time delay relay must be used to avoid connection of the capacitor bank within less than 5 minutes after its disconnection, ...
... 4.11 Quick discharge coils (optional) Quick discharge coils allow a very fast discharge time (less than 10 s). Caution : In any case (without or with quick discharge coils), a time delay relay must be used to avoid connection of the capacitor bank within less than 5 minutes after its disconnection, ...
Final Report - University of Portland
... efficiency by converting a greater percentage of consumed power into light. The remainder of this document describes the design process, project results and it ends with a conclusion. The challenge concerning fluorescent tube lamps is the higher voltage and frequency required to achieve high efficie ...
... efficiency by converting a greater percentage of consumed power into light. The remainder of this document describes the design process, project results and it ends with a conclusion. The challenge concerning fluorescent tube lamps is the higher voltage and frequency required to achieve high efficie ...
Electricity in a 2D mechanics simulator for education
... circuits and assumes the user has knowledge in the area of electronics. This leads to complicated programs which might have a to step learning curve for students to manage. Another related type of software that will be used for inspiration is Paul Falstad’s Circuit Simulator [Falstad, 2010]. It is m ...
... circuits and assumes the user has knowledge in the area of electronics. This leads to complicated programs which might have a to step learning curve for students to manage. Another related type of software that will be used for inspiration is Paul Falstad’s Circuit Simulator [Falstad, 2010]. It is m ...
Electromagnetic Interference Mitigation for Inverter fed AC Drives
... Switched Mode PWM inverter noise: Rapid change in voltage and current of a switching power converter EMI is in two forms: Radiated and conducted. The radiated EMI is emitted through free space to other equipments, while conducted EMI is transmitted via the circuit connection (Karthikeyan and Duraisw ...
... Switched Mode PWM inverter noise: Rapid change in voltage and current of a switching power converter EMI is in two forms: Radiated and conducted. The radiated EMI is emitted through free space to other equipments, while conducted EMI is transmitted via the circuit connection (Karthikeyan and Duraisw ...
isl88731 - ISL88731 - SMBus Level 2 Battery Charger With Remote
... on until 20ns after LGATE falls below 1V VGS, preventing cross-conduction and shoot-through. The same occurs for LGATE turn on. In order for the dead time circuit to work properly, there must be a low resistance, low inductance path from the LGATE ...
... on until 20ns after LGATE falls below 1V VGS, preventing cross-conduction and shoot-through. The same occurs for LGATE turn on. In order for the dead time circuit to work properly, there must be a low resistance, low inductance path from the LGATE ...
lecture05_06_30_2010..
... • Discussions going back to 2 hours • HW2 still due Friday at 5 PM – It is long, you should be half done – Get started tonight if you haven’t started yet – Don’t forget about the discussion board – Don’t forget there are other human beings who are also working on this homework EE40 Summer 2010 ...
... • Discussions going back to 2 hours • HW2 still due Friday at 5 PM – It is long, you should be half done – Get started tonight if you haven’t started yet – Don’t forget about the discussion board – Don’t forget there are other human beings who are also working on this homework EE40 Summer 2010 ...
Compact 224-Gbit/s Modulator Modules for Digital Coherent Optical
... mismatch losses, a 3-dB cut-off frequency of this module was around 20 GHz. Figure 9 shows experimental results of single polarization (SP)-16QAM operation for both 14 Gbaud/s and 28 Gbaud/s. Figure 9 (a) and (b) show the backto-back bit error rate (BER) as a function of optical signal-to-noise rati ...
... mismatch losses, a 3-dB cut-off frequency of this module was around 20 GHz. Figure 9 shows experimental results of single polarization (SP)-16QAM operation for both 14 Gbaud/s and 28 Gbaud/s. Figure 9 (a) and (b) show the backto-back bit error rate (BER) as a function of optical signal-to-noise rati ...
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.