10 2018 Picture This
... power supply. A transformer is commonly used to change 120V AC house current to a lower AC voltage for other uses. An Integrated circuit is a device that combines several semiconductors and other components into one package. The abbreviation "LED" stands for Light Emitting Diode. A LED is co ...
... power supply. A transformer is commonly used to change 120V AC house current to a lower AC voltage for other uses. An Integrated circuit is a device that combines several semiconductors and other components into one package. The abbreviation "LED" stands for Light Emitting Diode. A LED is co ...
C O N V E N T I O N A L
... do not provide a reset facility. The B412NL automatically resets the smoke detector when a fire condition no longer exists. Because of the self-reset feature, this base is ideal for the control of electrical apparatus such as air conditioning systems in systems using a 12V power supply instead of a ...
... do not provide a reset facility. The B412NL automatically resets the smoke detector when a fire condition no longer exists. Because of the self-reset feature, this base is ideal for the control of electrical apparatus such as air conditioning systems in systems using a 12V power supply instead of a ...
LABORATORY EXPERIMENT
... In figure 1, we see that the circuit has been divided into two structures: the transmitter structure and the receiver structure. In the transmitter, we see that when the button is pushed, the astable 555 timer oscillates and causes the IR LED to emit a modulated, or pulsed, infrared signal. This si ...
... In figure 1, we see that the circuit has been divided into two structures: the transmitter structure and the receiver structure. In the transmitter, we see that when the button is pushed, the astable 555 timer oscillates and causes the IR LED to emit a modulated, or pulsed, infrared signal. This si ...
A 0.5V, 2.41GHz, 196.3dBc/Hz FoM Differential Colpitts VCO with an
... As CMOS technologies continue to be scaled down to reduce cost, increase speed, and achieve higher levels of integration, small and low-voltage voltage-controlled oscillators (VCOs) are highly demanded. However, the low-supply voltage severely limits the output voltage swing and therefore the output ...
... As CMOS technologies continue to be scaled down to reduce cost, increase speed, and achieve higher levels of integration, small and low-voltage voltage-controlled oscillators (VCOs) are highly demanded. However, the low-supply voltage severely limits the output voltage swing and therefore the output ...
DM74S112 Datasheet From IC-ON
... with Preset, Clear, and Complementary Outputs General Description This device contains two independent negative-edge-triggered J-K flip-flops with complementary outputs. The J and K data is processed by the flip-flops on the falling edge of the clock pulse. The clock triggering occurs at a voltage l ...
... with Preset, Clear, and Complementary Outputs General Description This device contains two independent negative-edge-triggered J-K flip-flops with complementary outputs. The J and K data is processed by the flip-flops on the falling edge of the clock pulse. The clock triggering occurs at a voltage l ...
LMC7221 Tiny CMOS Comparator with Rail-To
... indicator and test point circuits. The small size of the Tiny package makes it easy to find space to add this feature to even compact designs. Input range to Beyond Rail to Rail The input common mode range of the LMC7221 is slightly larger than the actual power supply range. This wide input range me ...
... indicator and test point circuits. The small size of the Tiny package makes it easy to find space to add this feature to even compact designs. Input range to Beyond Rail to Rail The input common mode range of the LMC7221 is slightly larger than the actual power supply range. This wide input range me ...
Class notes on Thevenin Equivalent Circuits
... Thevenin invented a model called a Thevenin Source for representing a complex circuit using • A single “pseudo” source • A single “pseudo” resistance ...
... Thevenin invented a model called a Thevenin Source for representing a complex circuit using • A single “pseudo” source • A single “pseudo” resistance ...
ML-0329-468 Wiremap Tester.qxd
... Most voice and data network problems are wire related. Open or shorted pairs and general mis-wires are quickly diagnosed with the 468 Modular Cable Tester. Tester features a built-in tone generator; connect any 8-position modular plug to the appropriate jack on the transmitter, and a sweeping-tone s ...
... Most voice and data network problems are wire related. Open or shorted pairs and general mis-wires are quickly diagnosed with the 468 Modular Cable Tester. Tester features a built-in tone generator; connect any 8-position modular plug to the appropriate jack on the transmitter, and a sweeping-tone s ...
Department of Physical Sciences (Physics
... (b) Sketch a graph of the charge stored by the capacitor as a function of time and indicate the magnitude of the upper limiting value, QMAX. Give a definition of the time constant of the circuit and add construction lines to the graph to illustrate what it represents. [3 marks] (ii) Below is a circu ...
... (b) Sketch a graph of the charge stored by the capacitor as a function of time and indicate the magnitude of the upper limiting value, QMAX. Give a definition of the time constant of the circuit and add construction lines to the graph to illustrate what it represents. [3 marks] (ii) Below is a circu ...
Product Application Guide
... 1. The sound level of electro-magnetic type alarms do not vary much over the voltage range of these devices, so most electro-magnetic type alarms are not suitable for this method. 2. When you only have a narrow operating voltage range to work with. For example, if you are using the MSR320R at 5 Vdc, ...
... 1. The sound level of electro-magnetic type alarms do not vary much over the voltage range of these devices, so most electro-magnetic type alarms are not suitable for this method. 2. When you only have a narrow operating voltage range to work with. For example, if you are using the MSR320R at 5 Vdc, ...
LTC1540 - Nanopower Comparator with Reference
... The LTC ®1540 is an ultralow power, single comparator with built-in reference. The comparator’s features include less than 0.6µA supply current over the commercial temperature range, a 1.182V ±2% reference, programmable hysteresis and TTL/CMOS outputs that sink and source current. The reference outp ...
... The LTC ®1540 is an ultralow power, single comparator with built-in reference. The comparator’s features include less than 0.6µA supply current over the commercial temperature range, a 1.182V ±2% reference, programmable hysteresis and TTL/CMOS outputs that sink and source current. The reference outp ...
Semiconductor devices Electrons and Holes Intrinsic conduction
... A pn junction is a junction within the same crystal, between ptype silicon and n-type silicon –doping changes from primarily acceptors (p-type) to primarily donors (n-type) at a plane within the crystal. The usual way to produce a pn junction is a diffusion process in which a film of silicon dioxide ...
... A pn junction is a junction within the same crystal, between ptype silicon and n-type silicon –doping changes from primarily acceptors (p-type) to primarily donors (n-type) at a plane within the crystal. The usual way to produce a pn junction is a diffusion process in which a film of silicon dioxide ...
MAX4594–MAX4597 Low-Voltage, Single
... analog signals or logic inputs, especially if the analog or logic signals are not current limited. If this sequencing is not possible, and if the analog or logic inputs are not current limited to <20mA, add a small-signal diode (D1) as shown in Figure 1. If the analog signal can dip below GND, add D ...
... analog signals or logic inputs, especially if the analog or logic signals are not current limited. If this sequencing is not possible, and if the analog or logic inputs are not current limited to <20mA, add a small-signal diode (D1) as shown in Figure 1. If the analog signal can dip below GND, add D ...
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.