手可摘棉花

Open source practical current and magnetic field probe little-bee

Overview

Little Bee is an affordable, high-performance current probe and magnetic field probe that allows you to debug and analyze electronic devices more efficiently.

Features:

- Adjustable bandwidth (10 MHz and 1 MHz)
- Adjustable gain (1x and 4x)
- SMA output connector
- Connects to any standard 1 MΩ impedance oscilloscope input
- Powered by a single AA battery (4 hours battery life)
- Automatic Return to zero

Specifications:
Current Sensing
- Bandwidth: DC - 10 MHz
- Sensitivity: 0.25 Volts/Amp
- Maximum Current: +/- 5 A
- Noise: 3 mA RMS, 10 MHz bandwidth; 2 mA RMS, 1 MHz bandwidth
- DC Accuracy: + /- 15%
- Insertion Impedance: 100 nH in parallel with 70 Ohms
- Maximum Wire Size
4.25mm Full
10mm End Feed

Magnetic Field Sensing
- Bandwidth: DC - 10 MHz
- Sensitivity: 0.2 Volts/Gauss
- Maximum Field: +/- 6 Gauss
- Noise: 4 mG RMS at 10 MHz bandwidth, 2.5 mG RMS at 1 MHz bandwidth

Design Files

little-bee-B1-main

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2024-11-14 04:31:47

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