Generation of high DC, AC, impulse voltages and currents
... 2. What are the applications of impulse current wave forms of high magnitude? Testing of surge diverters Testing of non-linear resistors Electric arc studies Studies of electric plasmas in high current discharges 3. Explain the necessity for generating impulse currents and mention the featur ...
... 2. What are the applications of impulse current wave forms of high magnitude? Testing of surge diverters Testing of non-linear resistors Electric arc studies Studies of electric plasmas in high current discharges 3. Explain the necessity for generating impulse currents and mention the featur ...
Automotive-grade low voltage NPN power transistor
... using new low voltage planar technology with double metal process. The result is a transistor which boasts exceptionally high gain performance coupled with very low saturation voltage. ...
... using new low voltage planar technology with double metal process. The result is a transistor which boasts exceptionally high gain performance coupled with very low saturation voltage. ...
OPA349, OPA2349 - Texas Instruments
... wide input swing is required. A design option would be to configure the op amp as a unity-gain inverter as shown below and hold the noninverting input at a set common-mode voltage outside the transition region. This can be accomplished with a voltage divider from the supply. The voltage divider shou ...
... wide input swing is required. A design option would be to configure the op amp as a unity-gain inverter as shown below and hold the noninverting input at a set common-mode voltage outside the transition region. This can be accomplished with a voltage divider from the supply. The voltage divider shou ...
The Use And Misuse Of Circuit Protection Devices
... direct strikes or voltages and currents induced by indirect strikes), or simply by the switching of power systems with resulting load changes and short-circuit switching. At lower levels (500 V to 1 kV), these transients occur in industrial automation. At higher levels (5 to 6 kV), they occur in pow ...
... direct strikes or voltages and currents induced by indirect strikes), or simply by the switching of power systems with resulting load changes and short-circuit switching. At lower levels (500 V to 1 kV), these transients occur in industrial automation. At higher levels (5 to 6 kV), they occur in pow ...
Datasheet - Mouser Electronics
... EMC resistors fuse open circuit at overload powers exceeding 60W within the time indicated on the Fusing Characteristic. Their fusing performance at lower overload powers is not specified. ...
... EMC resistors fuse open circuit at overload powers exceeding 60W within the time indicated on the Fusing Characteristic. Their fusing performance at lower overload powers is not specified. ...
TC7662B CHARGE PUMP DC-TO
... In the TC7662B, the four switches of Figure 2 are MOS power switches; S1 is a P-channel device and S2, S3 and S4 are N-channel devices. The main difficulty with this approach is that in integrating the switches, the substrates of S3 and S4 must always remain reverse biased with respect to their sour ...
... In the TC7662B, the four switches of Figure 2 are MOS power switches; S1 is a P-channel device and S2, S3 and S4 are N-channel devices. The main difficulty with this approach is that in integrating the switches, the substrates of S3 and S4 must always remain reverse biased with respect to their sour ...
Voltage Margining using the TPS62130
... A simple circuit is added to provide a –5% voltage margining function. Adding a series resistor and switch in parallel with the bottom FB pin resistor, R2, allows the output voltage to be increased when the added resistor, R3, is switched into the FB divider. Figure 1 shows the TPS62130EVM-505 with ...
... A simple circuit is added to provide a –5% voltage margining function. Adding a series resistor and switch in parallel with the bottom FB pin resistor, R2, allows the output voltage to be increased when the added resistor, R3, is switched into the FB divider. Figure 1 shows the TPS62130EVM-505 with ...
12 volt power supply
... This is the last block in a regulated DC power supply. The output voltage or current will change or fluctuate when there is change in the input from ac mains or due to change in load current at the output of the regulated power supply or due to other factors like temperature changes. This problem ca ...
... This is the last block in a regulated DC power supply. The output voltage or current will change or fluctuate when there is change in the input from ac mains or due to change in load current at the output of the regulated power supply or due to other factors like temperature changes. This problem ca ...
LECTURE 11 Introduction to Feedback I. Feedback on PWM
... Recall from op amp design and control theory, one designs the feedback loop carefully such that undesired loop oscillation does not occur at any frequency. In some server computer power supplies or system tape drives, safe reliable operation is as important as speed - ultrasafe case. Ultra-safe case ...
... Recall from op amp design and control theory, one designs the feedback loop carefully such that undesired loop oscillation does not occur at any frequency. In some server computer power supplies or system tape drives, safe reliable operation is as important as speed - ultrasafe case. Ultra-safe case ...
Theremin in Human Posture Identification
... Abstract: This paper presents a theremin used as a sensing device which provides a DC voltage output proportional to distance between the device and a human body in standing position. This device consists of a pair of Butler’s oscillators, a heterodyning mixer, a low-pass 4th order Butterworth filte ...
... Abstract: This paper presents a theremin used as a sensing device which provides a DC voltage output proportional to distance between the device and a human body in standing position. This device consists of a pair of Butler’s oscillators, a heterodyning mixer, a low-pass 4th order Butterworth filte ...
HELLA 4x4 Spotlights
... illumination intensity. From yellow through green to blue, the illumination intensity decreases depending on distance. ...
... illumination intensity. From yellow through green to blue, the illumination intensity decreases depending on distance. ...
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.