A crystal triode β measurement instrument based on Raspberry PI Pico Single chip microcomputer
For the purpose of improving the transistor β value measurement in electronics courses with low cost and high precision,a rechargeable portable transistor β value tester is designed based on the Raspberry Pi Pico Single chip microcomputer,which is developed using Micropython.It outputs adjustable driving voltage through DAC module;improves the load capacity,isolates the measurement and sampling module through voltage follower;and improves the measurement accuracy by passive filtering and software correction.After testing and correction,the error value of this instrument relative to the measurement result of transistor graphic meter is less than 5,and the relative error is less than 2%.This instrument is simple in operation,fast in response,and can effectively meet the requirements of electronics course teaching,with high popularization value and cost advantage.
万方数据
维普
