current

1.2V-25V/10A Adjustable Power Supply Using Power Op-Amp

This is a small size power supply based on OPA549 power op-amp that provides output voltage 1.2V to 25V with 0 to 10A adjustable current limit. Two onboard trimmer potentiometers provided to adjust the voltage and current, LED D1 is over temperature indicator. The circuit works with input supply of 30V DC and logic supply …

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High Voltage-Current Half Bridge Driver Using IR2153 & IGBT

This is an IGBT based half bridge board that has been designed for multiple applications, like Induction Heater driver, Tesla coil driver, DC-DC converters, SMPS etc. High current and high voltage IGBTs are used to serve high power requirements. Its a general purpose Half-bridge board with inbuilt oscillator and it can be configured with many combinations of components, depending on the application requirements. IGBT NGTB40N120FL2WG from ON …

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Low-cost current monitor tracks high dc currents

To measure high levels of direct current for overload detection and protection, designers frequently use either a current-shunt resistor or a toroidal core and Hall-effect magnetic-field sensor. Both methods suffer from drawbacks. For example, measuring 20A with a 10-mΩ resistor dissipates 4W of power as waste heat. The Hall-effect sensor delivers accurate measurements and wastes …

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LT6658 – Precision Dual Output, High Current, Low Noise, Voltage Reference

Features Dual Output Tracking Reference Each Output Configurable: 2.5V to 6V Output 1: 150mA Source/20mA Sink Output 2: 50mA Source/20mA Sink Low Drift: A-Grade: 10ppm/°C Max B-Grade: 20ppm/°C Max High Accuracy: A-Grade: ±0.05% Max B-Grade: ±0.1% Max Low Noise: 1.5ppmP-P (0.1Hz to 10Hz) Wide Operating Voltage Range to 36V Load Regulation: 0.1ppm/mA AC PSRR: 96dB …

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LTC3106 – 300mA Low Voltage Buck-Boost Converter with PowerPath and 1.6μA Quiescent Current

Features Dual Input Buck-Boost with Integrated Power Path™ Manager Ultralow Start-Up Voltages: 850mV Start with No Backup Source, 300mV with a Backup Source Compatible with Primary or Rechargeable Backup Batteries Digitally Selectable VOUT and VSTORE Maximum Power Point Control Ultralow Quiescent Current: 1.6μA Regulated Output with VIN or VSTORE Above, Below or Equal to the Output Optional Backup …

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LTC6268 – 500MHz Ultra-Low Bias Current FET Input Op Amp

Features Gain Bandwidth Product: 500MHz –3dB Bandwidth (A = 1): 350MHz Low Input Bias Current: ±3fA Typ. Room Temperature 4pA Max at 125°C Current Noise (100kHz): 5.5fA/√Hz Voltage Noise (1MHz): 4.3nV/√Hz Extremely Low CIN 450fF Rail-to-Rail Output Slew Rate: 400V/μs Supply Range: 3.1V to 5.25V Quiescent Current: 16.5mA Harmonic Distortion (2VP-P): –100dB at 1MHz –80dB …

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Building a current / flux probe for contactless measurements

In the last weeks I followed an idea to measure current without the need to cut the wires or even open a pcb trace. The solution i came up with is a hall effect based measurement. I wrote some more about it in an article here: http://avrs-at-leipzig.de/dokuwiki/en/prokekte/fluxprobe If you do not like to open the …

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