Understanding Microphone Sensitivity - Digi
... microphones. The microphone’s acoustic input levels in dB SPL are always rms measurements, regardless of the type of microphone. The output of analog microphones is referenced to 1 Vrms, as rms measurements are more commonly used for comparing analog audio signal levels. However, the sensitivity and ...
... microphones. The microphone’s acoustic input levels in dB SPL are always rms measurements, regardless of the type of microphone. The output of analog microphones is referenced to 1 Vrms, as rms measurements are more commonly used for comparing analog audio signal levels. However, the sensitivity and ...
Electronic Tachometer
... seconds, and R is the engine speed in RPM. Clearly, there are some limits to these values. The pulses cannot run together, so, at the highest engine speed, T must be somewhat less than Tr. Additionally, to operate properly, the integrated circuit used to generate the pulses (an NE555 timer), needs s ...
... seconds, and R is the engine speed in RPM. Clearly, there are some limits to these values. The pulses cannot run together, so, at the highest engine speed, T must be somewhat less than Tr. Additionally, to operate properly, the integrated circuit used to generate the pulses (an NE555 timer), needs s ...
Flat Transformers for Low Voltage, High Current, High Frequency
... In a low output voltage high frequency conventional transformer, the output winding is usually configured to have a single turn. If the transformer has a turns ratio of n to 1, then the primary winding will have n turns. The number of primary turns cannot be less than n, by design. In the flat trans ...
... In a low output voltage high frequency conventional transformer, the output winding is usually configured to have a single turn. If the transformer has a turns ratio of n to 1, then the primary winding will have n turns. The number of primary turns cannot be less than n, by design. In the flat trans ...
Digital-Pixel Focal Plane Array Technology
... FIGURE 2. Components of an infrared (IR) focal plane array. Detector photodiodes fabricated using low-band-gap materials (e.g., mercury cadmium telluride [HgCdTe] or indium antimonide [InSb]) are bonded to a silicon complementary metal-oxide semiconductor (CMOS) readout integrated circuit (ROIC); so ...
... FIGURE 2. Components of an infrared (IR) focal plane array. Detector photodiodes fabricated using low-band-gap materials (e.g., mercury cadmium telluride [HgCdTe] or indium antimonide [InSb]) are bonded to a silicon complementary metal-oxide semiconductor (CMOS) readout integrated circuit (ROIC); so ...
MAX114/MAX118 +5V, 1Msps, 4 & 8-Channel, 8-Bit ADCs with 1µA Power-Down _______________General Description
... MAX114/MAX118 can be shut down between conversions, reducing supply current to microamp levels (see Typical Operating Characteristics). A logic low on the PWRDN pin shuts the devices down, reducing supply current typically to 1µA when powered from a single +5V supply. A logic high on PWRDN wakes up ...
... MAX114/MAX118 can be shut down between conversions, reducing supply current to microamp levels (see Typical Operating Characteristics). A logic low on the PWRDN pin shuts the devices down, reducing supply current typically to 1µA when powered from a single +5V supply. A logic high on PWRDN wakes up ...
Synthesis Techniques for Low-Power Hard Real-Time Systems on Variable Voltage Processors
... technology makes it possible to vary the generated supply voltage dynamically under external control. While many CMOS circuits have always been capable of operating over a range of supply voltages, it is the recent progress in power supply circuits [21, 9] that has made feasible systems with dynamic ...
... technology makes it possible to vary the generated supply voltage dynamically under external control. While many CMOS circuits have always been capable of operating over a range of supply voltages, it is the recent progress in power supply circuits [21, 9] that has made feasible systems with dynamic ...
P84820
... Strobe will produce 1 flash per second over the "Regulated Voltage" range. 2. These models meet the required light distribution patterns defined in UL1638, ULC S526-02, UL 464 and UL 1971. 3. All models are Listed for indoor and outdoor use with a temperature range of -40°F to 150°F (-40°C to +66°C) ...
... Strobe will produce 1 flash per second over the "Regulated Voltage" range. 2. These models meet the required light distribution patterns defined in UL1638, ULC S526-02, UL 464 and UL 1971. 3. All models are Listed for indoor and outdoor use with a temperature range of -40°F to 150°F (-40°C to +66°C) ...
CMOS, 125 MHz Complete DDS Synthesizer AD9850
... frequency/phase-agile sine wave. The digital sine wave is converted to analog form via an internal 10-bit high speed D/A converter, and an onboard high speed comparator is provided to translate the analog sine wave into a low-jitter TTL/CMOScompatible output square wave. DDS technology is an innovat ...
... frequency/phase-agile sine wave. The digital sine wave is converted to analog form via an internal 10-bit high speed D/A converter, and an onboard high speed comparator is provided to translate the analog sine wave into a low-jitter TTL/CMOScompatible output square wave. DDS technology is an innovat ...
LT1641 - Positive High Voltage Hot Swap Controller
... After the current limit circuit becomes active, an 80µA pullup current source is connected to the TIMER pin and the voltage will rise with a slope equal to 77µA/CTIMER as long as the current limit circuit remains active. Once the desired maximum current limit time is set, the capacitor value is: ...
... After the current limit circuit becomes active, an 80µA pullup current source is connected to the TIMER pin and the voltage will rise with a slope equal to 77µA/CTIMER as long as the current limit circuit remains active. Once the desired maximum current limit time is set, the capacitor value is: ...
165-440-900
... Using well-proven neutral unbalance capacitor bank protection principles, the iCP-440 is applicable regardless of bank grounding (ungrounded, solid or resistive / capacitive), capacitor unit fusing (external, internal or fuseless), wye configuration (single or double), or system voltage or bank var ...
... Using well-proven neutral unbalance capacitor bank protection principles, the iCP-440 is applicable regardless of bank grounding (ungrounded, solid or resistive / capacitive), capacitor unit fusing (external, internal or fuseless), wye configuration (single or double), or system voltage or bank var ...
2*100 watt @ 4ohm TK2050 Class-D Audio Amplifier
... 2.1 Power Connection To power the amplifier board, use either jack or terminal blocks. On-board diodes can prevent the consequence of wrong connection of power supply. ...
... 2.1 Power Connection To power the amplifier board, use either jack or terminal blocks. On-board diodes can prevent the consequence of wrong connection of power supply. ...
MAX1940 Triple USB Switch with Autoreset and Fault Blanking General Description
... enable-control input and fault indicator (see Figure 1). A logic input sets the active polarity of the enable control inputs. The fault indicators notify the system when the current-limit, short-circuit, undervoltage lockout, or thermal-shutdown threshold is exceeded. The MAX1940 operates from a 4V ...
... enable-control input and fault indicator (see Figure 1). A logic input sets the active polarity of the enable control inputs. The fault indicators notify the system when the current-limit, short-circuit, undervoltage lockout, or thermal-shutdown threshold is exceeded. The MAX1940 operates from a 4V ...
MAX1242/MAX1243 +2.7V to +5.25V, Low-Power, 10-Bit Serial ADCs in SO-8 __________________General Description
... for accurate conversions near full scale, the input must not exceed VDD by more than 50mV, or be lower than GND by 50mV. If the analog input exceeds 50mV beyond the supplies, limit the input current to 2mA. ...
... for accurate conversions near full scale, the input must not exceed VDD by more than 50mV, or be lower than GND by 50mV. If the analog input exceeds 50mV beyond the supplies, limit the input current to 2mA. ...
GS7100A 07/13/06 POWER DELEGATOR SERIES 7100A POWER
... 4.1.3 The power section shall contain the main power terminal block for each hot line and the service ground and neutral. 4.1.4 The control section shall contain terminals, for low voltage control, to interface with the Remote Emergency Power Off (REPO) push button, air conditioning, water detectors ...
... 4.1.3 The power section shall contain the main power terminal block for each hot line and the service ground and neutral. 4.1.4 The control section shall contain terminals, for low voltage control, to interface with the Remote Emergency Power Off (REPO) push button, air conditioning, water detectors ...
AD2S1205 数据手册DataSheet下载
... XTALOUT pins. The position and velocity accuracy are guaranteed for a frequency range of 8.192 MHz ± 25%. Clock Input. To achieve the specified dynamic performance, an external crystal is recommended at the CLKIN and XTALOUT pins. The position and velocity accuracy are guaranteed for a frequency ran ...
... XTALOUT pins. The position and velocity accuracy are guaranteed for a frequency range of 8.192 MHz ± 25%. Clock Input. To achieve the specified dynamic performance, an external crystal is recommended at the CLKIN and XTALOUT pins. The position and velocity accuracy are guaranteed for a frequency ran ...
Introduction to PSPICE
... The Opamp (uA741) can be found in EVAL library. You need to mirror it to get in the configuration as shown. Once again resistors and capacitors are in ANALOG library. The power sources (+15V and -15V) can be obtained from SOURCE library. You choose VDC and then assign the appropriate values by editi ...
... The Opamp (uA741) can be found in EVAL library. You need to mirror it to get in the configuration as shown. Once again resistors and capacitors are in ANALOG library. The power sources (+15V and -15V) can be obtained from SOURCE library. You choose VDC and then assign the appropriate values by editi ...
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.