TDK’s pressure sensor element combines high sensitivity with extremely small dimensions enabling compact pressure sensor designs
TDK Corporation presents the C35 type pressure sensor element, designed to measure a range of 0 mbar to 100 mbar. It combines high sensitivity with extremely low dimensions of just 2.05 mm x 2.05 mm x 1.2 mm, enabling compact pressure sensor designs.
The pressure sensor element with ordering code B58601E35* works according to the piezoresistive principle via a Wheatstone bridge and is certified for an operating voltage of up to 10 V. Offering a high sensitivity of 110 mV/V/bar, C35 is well suited for applications with high demands of sensitivity, accuracy, and long-term stability of 0.1% FSON. Furthermore, C35 is designed for a wide temperature range from -40°C to +150°C and is suitable for pressure measurements of non-aggressive gases and liquids. The main uses are in applications that require high reliability and extremely precise pressure measurement, such as medical engineering and the industrial and automotive sectors.
Analog Devices’ LTC7804 offers low Iq, small solution size, and PassThru™ operation for up to 99.9% efficiency
ADI’s LTC7804 is a low IQ, 3 MHz PassThru operation capable of synchronous boost DC/DC switching regulator controller that operates up to a 40 V input voltage. Its low quiescent current extends operating runtime in battery-powered systems when in standby mode. Spread spectrum frequency operation modulation helps reduce radiated and conducted EMI peak, and up to 3 MHz switching reduces the solution size, ideal for a broad range of applications and markets.
As a demonstration circuit, the DC2846A is a DC/DC synchronous boost converter that features the LTC7804 (MSE package), a spread spectrum or constant frequency current mode synchronous boost controller. The DC2846A generates a 24 V output voltage and provides up to 6 A of output current. The 500 kHz constant switching frequency operation results in a small and efficient circuit.
The converter provides high output voltage accuracy (typically ±2%) over a wide load range with no minimum load requirement.
The DC2846A supports two ways of biasing step-up controllers: directly from the input voltage or output rail. The third possibility is connecting a voltage source to the EXTVCC terminal.
The DC2846A has an extremely wide switching frequency range from 100 kHz to 3 MHz. It can be synchronized to the external clock anywhere inside this range. The spread spectrum operation is used for reducing the peak radiated and conducted noise to simplify compliance with electromagnetic interference (EMI) standards.
The DC2846A has a small circuit footprint. It is a high-performance and cost-effective solution for telecom, automotive, and Power over Ethernet (PoE) applications.
DC2846A Features
Wide input voltage range: from 6 V to 24 V
Relatively high output power: up to 150 W
Extremely low quiescent current: 15 µA at sleep mode and as low as 1 µA at shutdown
Onboard low power bias supply
Ability to select spread spectrum or fixed frequency
Pulse-skipping mode: forced continuous operation or low ripple Burst Mode® operation at light loads
Synchronization with external clock
If VIN > VOUT, the DC2846A eliminates the usual boost topology losses by keeping the top MOSFET on continuously
LTC7804 Features
Synchronous operation for reduced power dissipation
PassThru operation/100% duty cycle capability for synchronous MOSFET
Wide VIN range: 4.5 V to 40 V, operates down to 1 V after start-up
This is a Phase-Shifted Full-Bridge PWM LM5046 carrier board that contains all of the features necessary to implement a phase-shifted full-bridge topology power converter. All inputs and outputs pins are accessible using the header connector. High efficiency DC-DC converter can be created using LM5046 carrier board + External H-Bridge and Transformer. Refer to the datasheet of LM5046 and schematic to configure the frequency, current feedback, delays, etc.
Features
Operating Power Supply 36V (Range 36V to 75V DC)
Under Voltage Lockout UVLO (34V/32V ON/OFF)
Frequency Of Operations 420Khz (Programmable up to 2Mhz- Set Resistor R10)
Highest Integration Controller for Small
Form Factor, High-Density Power Converters
High-Voltage Start-Up Regulator
Intelligent Sync Rectifier Start-Up Allows
Linear Turn-on into Pre-biased Loads
Synchronous Rectifiers Disabled in UVLO Mode and Hiccup Mode
Two Independent, Programmable Dead-Time
Adjustments to Enable Zero-Volt Switching
Four High-Current 2-A Bridge-Gate Drivers
Wide-Bandwidth Opto-Coupler Interface
Configurable for Either Current-Mode or Voltage Mode Control
The project presented here is a low-cost position control closed-loop analog-servo using brushed DC motor and potentiometer as feedback. This project provides all necessary active functions for a closed-loop servo system using a Brushed DC Motor and potentiometer mounted on the output shaft of the DC Motor with Gear. The project is ideally suited for almost any servo positioning application. Can be used in applications such as side mirror movement control for cars, car head lamp beam control, animatronics, robotics, etc.
The project requires a special mechanism, where the DC motor’s output shaft is mechanically couple with the potentiometer shaft using a reduction gear. Approx. reduction ratio 15-50: 1. When the reference pot is turned, the motor shaft will follow the potion. This will provide a maximum rotation of 270 degrees. Multi rotation is possible with the help of a multiturn potentiometer.
The project is based on the ZXBM5409Q chip from Diode Incorporation which is a protected H-bridge driver designed specifically for manual automotive headlight-beam control and industrial servo control applications with DC-brush motor loads. The integrated full-bridge driver output stage is composed of high-current, low-RDSON H-bridge MOSFETs to maximize efficiency. To simplify the circuit design and minimize external components, the device integrates voltage and temperature-compensated internal references, amplifiers, and output H-bridge power switches with low RDSON. For system flexibility, the servo controls forward and reverse hysteresis, dead band, and angle amplification are easily programmable by external resistors. To help protect the motor coil, the ZXBM5409Q provides fault condition protection, such as RANGE input short to GND, short-to supply voltage, or broken wires, by stopping the motor and disconnecting the output stage. In case of supply undervoltage and overvoltage, the device shuts down the output drive to help prevent overvoltage stress on the coil. The overcurrent protection monitors the output current and shuts down the outputs stage with periodic retry to help protect the coil from device burnout. Overtemperature shutdown provides thermal protection for the device.
Note: Read the datasheet to learn more about defining the hysteresis window, it is advisable to solder a 0.1uF capacitor across the motor +/- terminal for noise decoupling.
Features
Wide Operating Voltage Range: 8V to 18V
Output Current 800mA (Peak 1.6A)
Fault Protection – RANGE Short to GND, Supply, or Broken Wires
Overvoltage and Undervoltage Shutdown
Overcurrent Protection
Thermal Protection
PCB dimensions: 36.04 x 26.51 mm
Thermal Shutdown Protection
The device has an internal thermal shutdown to prevent a thermal runaway scenario. The thermal shutdown is triggered when the junction temperature of the device reaches +170°C. It will remain in standby mode until the junction temperature falls by +30°C.
Overcurrent Protection
The internal overcurrent protection (OCP) threshold is 1.6A typical at 12V supply +25°C. When the motor current exceeds the OCP threshold for longer than 2µs typical on any of the H-bridge switches, the device switches off all the output switches and remains off for 5ms typical. The IC returns to normal operation after the 200µs if overcurrent condition goes away. If the motor current is still higher than the OCP threshold, the device enters another 5ms standby mode.
Overvoltage Shutdown of Output Drive
When the supply voltage exceeds the overvoltage shutdown threshold, VOV_TH, the ZXBM5409Q shuts down all the output drive switches and enters standby mode to help prevent overvoltage stress on the coil. The driver returns to normal condition if the supply voltage drops below
VOV_RLTH—provided no other fault condition or signals are preventing it from entering normal operation
Undervoltage Lockout
To make sure the minimum voltage required to operate the driver is supplied, the ZXBM5409Q has an undervoltage lockout. At start up the device only starts if the supply voltage is typically over VUVLO_RLTH. During normal operation, the device switches off all the output switches and powers down if the supply voltage drops below VUVLO_TH typical. When the supply voltage drops below undervoltage lockout threshold, VUVLO_TH_R, the ZXBM5409Q shuts down all the output drive switches and enters standby mode to help prevent overvoltage stress on the coil.
IBASE Technology Inc., provider of industrial motherboards and embedded systems, has rolled out the IB952 3.5-inch SBC that is based on AMD Ryzen™ Embedded V2000 processors built with innovative 7nm process technology and featuring up to 8 cores and 16 threads to provide the computing performance and power efficiency for today’s IoT market. With the integrated AMD Radeon Vega graphics, the board can support four displays in 4K resolution through the onboard interfaces – dual DisplayPort, an eDP, and a 24-bit LVDS dual-channel interface.
Measuring 102mm x 147mm, the IB952 is packed with features to drive a diverse range of space-limited applications in POS, kiosk, digital signage and factory automation. It comes with two DDR4 SO-DIMM sockets to fit up to 64MB RAM, a wide input voltage range (12V ~ 24V) and two Gigabit Ethernet for high network throughput. The board processor is mounted on the underside to allow the heatsink to occupy the entire footprint, helping designers create system housings with efficient heat dissipation.
Other features include a TPM (Trusted Platform Module) chip for hardware-based security and high-speed peripheral connectivity with two USB 2.0, three USB 3.1, two SATA III, two serial ports, and two M.2 sockets (M-key/E-key). Both Windows 10 and Linux Ubuntu operating systems are supported.
This is an easy-to-make LED dimmer using RF remote control. The project is capable of driving a load up to 24W (2A X 12V LED). Any 12V single or 12V LED strip can be used. This is an open-source Arduino compatible hardware that has Atmega328 microcontroller, Potentiometer, MOSFET, 5V Regulator, 3.3V Regulator, NRF24L01 Radio modules, and few other components. The same PCB can be used for Transmitter and Receiver. LED D2 Power LED, LED D1 optional.
Radio Remote Control LED Dimmer Using NRF24L01 – Arduino Compatible – [Link]
The circuit presented here is a high-frequency differential line receiver amplifier that has excellent common-mode rejection at its inputs. The project is an ideal solution for a receiver for composite video signals that are transmitted over a long distances on twisted-pair cables like CAT5. Category 5 cables are very common in office settings and are extensively used for data transmission. These cables can also be used for the analog transmission of signals such as video. These long cables pick up noise from the environment they pass through. This noise does not favor one conductor over another and therefore is a common-mode signal. A receiver that rejects the common-mode signal on the cable can greatly enhance the signal-to-noise ratio performance of the link.
Twisted-Pair Cable-CAT5 – Composite Video Differential Receiver Amplifier – [Link]
This is a high-performance, adjustable constant current, and PWM dimmer project. It provides accurate output constant current and PWM control. The circuit regulates the current flowing through a LED/LED array to maintain the desired level of light output. The board consists of CAT4101 LED driver chip and LTC6992-1 PWM generator chip.
12W Constant-Current LED Driver with PWM Dimming – 12V DC@1A Input – [Link]
MEMS Microphones is setting a new performance benchmark across a growing number of industries. These innovative silicon microphones were designed to extend the benefits of the lowest possible self-noise (high SNR) and lowest distortion to an ever-expanding number of applications. The project presented here is a low noise analog MEMS microphone Preamplifier with compression and noise gating. The project provides a studio-quality audio experience. The project is built using SSM2167 chip and InvenSense ICS-40180 Low-Noise Microphone with bottom port and analog output.
MEMS Microphone Pre-Amplifier with Compression and Noise Gating – Studio Quality Microphone Pre-Amplifier – [Link]
This project provides AC voltage zero-cross timing detection and a DC voltage after diode rectification with high accuracy. Possible applications for such circuits are AC motor controllers, AC lamp controllers, AC Dimmer Controllers, Home Appliances. The circuit outputs a zero-cross signal from 90 Vac to 264 Vac input. The project is based on BM1Z102FJ chip which outputs a high precision zero-cross timing of targeted AC voltage and a DC voltage after diode rectification of high accuracy. The project also includes high voltage offline AC to DC converter chip BM2P129TF.
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