automatic voltage variation to keep constant current depending on load resistance
€8-30 EUR
착불
automatic voltage variation to keep constant current depending on load resistance
hi,
i have a circuit which is powered by a boost converter (9V-27V) and then it generates an AC current (2 output electrodes) with a low frequency (10hz) square waveform 50% duty cycle
the load resistance between the 2 electrodes is variable (sometimes it increases sometimes it decreases (between 1kO to 10kO)).
for now i set the voltage manually on the boost converter but it is annoying to do that each time the resistance between the 2 electrodes changes.
schematic of circuit :
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i want you to mod this circuit so that i can manually set the value of the current allowed to flow (from 0.3mA to 3mA, approximately) and depending on the load resistance between the 2 electrodes, the voltage of the boost converter would automatically increase or decrease to keep a constant current flowing...
if you are interested :
i want a demonstration of the circuit working (using a simulation software is ok)
i want a schematic of the circuit
i want a list of components (with their name / properties) that i will have to buy (easy to find in online web shops)
i want some help to understand / assemble the circuit (i have a good understanding but i may need help to recognize some pins...)
once i have assembled and tested the circuit, i will release the milestone.
if you have any question, don't hesitate to ask.
thanks for your interest in this project,
update 2020-04-05-21h18m :
load resistance is between 10kO and 150kO
min max voltage can be between 9V to 36V
min max current (chosen by user using a potentiometer) must be between 0.1mA to 3mA
프로젝트 ID: #24748011
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이 일자리에 대한 프리랜서 11 명의 평균 입찰가: €26
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