Slide 1
... used per second = 1 Watt (1000 W = 1 kW) • Power = current x voltage • the appliances required high power, like your electric range or clothes dryer operate at the higher voltage, so less current is used. • we pay for the total energy (not power) used each month - KW-hours (KWH) ...
... used per second = 1 Watt (1000 W = 1 kW) • Power = current x voltage • the appliances required high power, like your electric range or clothes dryer operate at the higher voltage, so less current is used. • we pay for the total energy (not power) used each month - KW-hours (KWH) ...
NTE7142 - NTE Electronics Inc
... damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational section of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device r ...
... damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational section of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device r ...
Test No 1 Physics Semi Conductor
... 9. Draw the circuit diagram of a common emitter amplifier using n-p-n transistor. What is the phase difference between input signal and output voltage? Draw the input and output waveforms of the signal. ...
... 9. Draw the circuit diagram of a common emitter amplifier using n-p-n transistor. What is the phase difference between input signal and output voltage? Draw the input and output waveforms of the signal. ...
Current Electricity - Red Hook Central School Dst
... What does current mean? Flow or motion. What does electric current mean? Flow or motion of electric charge. ...
... What does current mean? Flow or motion. What does electric current mean? Flow or motion of electric charge. ...
TDA2040 - Micropik
... crossovers but today active filters cost significantly less than a good passive filter using air-cored inductors and non-electrolytic capacitors. In addition, active filters do not suffer from the typical defects of passive filters : - power loss - increased impedance seen by the loudspeaker (lower ...
... crossovers but today active filters cost significantly less than a good passive filter using air-cored inductors and non-electrolytic capacitors. In addition, active filters do not suffer from the typical defects of passive filters : - power loss - increased impedance seen by the loudspeaker (lower ...
building aq meter
... zero output impedance to drive the test circuit. To the best of the author’s knowledge this circuit is original and was probably patentable before publication. It is one of those rare designs which provide a clean, constant amplitude sine wave output over an enormous frequency range using bog standa ...
... zero output impedance to drive the test circuit. To the best of the author’s knowledge this circuit is original and was probably patentable before publication. It is one of those rare designs which provide a clean, constant amplitude sine wave output over an enormous frequency range using bog standa ...
dms application note 8 - Murata Power Solutions
... The DMS-20 and DMS-30 Series of 3½ digit voltmeters are ideal for constructing very accurate digital thermometers with only a single external component—the LM34 or LM35 solid-state, temperature-transducer IC’s. The LM34 and LM35, both available from National Semiconductor, are rugged three-terminal ...
... The DMS-20 and DMS-30 Series of 3½ digit voltmeters are ideal for constructing very accurate digital thermometers with only a single external component—the LM34 or LM35 solid-state, temperature-transducer IC’s. The LM34 and LM35, both available from National Semiconductor, are rugged three-terminal ...
Designing an Optical Theremin
... feature, frequency and sampling rates, and reversion of indicator range. Originally, we used a for-loop to build the frequency table, and compare our value to it in order to tune the frequency signal. This design was too complicated and difficult to adjust so we discarded the whole schematic and use ...
... feature, frequency and sampling rates, and reversion of indicator range. Originally, we used a for-loop to build the frequency table, and compare our value to it in order to tune the frequency signal. This design was too complicated and difficult to adjust so we discarded the whole schematic and use ...
Train Detection - North River Railway
... • Fortunately Reflective Detection is less sensitive to movements in the room than simple direct detection. • Unfortunately the underside of a car or train may have a wide range of reflective properties. • This disadvantage can be overcome by pulsing the light source at between 1 and 10 kHz and filt ...
... • Fortunately Reflective Detection is less sensitive to movements in the room than simple direct detection. • Unfortunately the underside of a car or train may have a wide range of reflective properties. • This disadvantage can be overcome by pulsing the light source at between 1 and 10 kHz and filt ...
Lecture January 27
... • You can set up a bridge circuit so that the voltage is ZERO at the nominal conditions. • Consider a strain gage installed on a beam. Under no load conditions you’d like the output to read 0.0. You’d also like the sign of the output voltage to correspond to whether the gage is in tension or compres ...
... • You can set up a bridge circuit so that the voltage is ZERO at the nominal conditions. • Consider a strain gage installed on a beam. Under no load conditions you’d like the output to read 0.0. You’d also like the sign of the output voltage to correspond to whether the gage is in tension or compres ...
Photorelay White Paper Draft 3.qxd
... conventional mechanical relays: • High speed switching (typically one-fifth the speed of mechanical relays, or 80 percent faster) • Lower drive power consumption (typically two orders of magnitudes smaller than mechanical relay) • Longer life, which comes from not having any mechanical components th ...
... conventional mechanical relays: • High speed switching (typically one-fifth the speed of mechanical relays, or 80 percent faster) • Lower drive power consumption (typically two orders of magnitudes smaller than mechanical relay) • Longer life, which comes from not having any mechanical components th ...
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.