Difference between revisions of "EEHPRT Simple Low-Current Constant-Current Sources"
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=== Introduction === | |||
Whether driving LEDs or for transducer excitation, a need arises for a simple (ideally, two-leaded part) constant-current source which is simple to use, compact, versatile, adjustable, and has a wide span of current adjustment and excitation voltage supply range. | Whether driving LEDs or for transducer excitation, a need arises for a simple (ideally, two-leaded part) constant-current source which is simple to use, compact, versatile, adjustable, and has a wide span of current adjustment and excitation voltage supply range. | ||
Unfortunately, such a part does not really exist if "small" constant current (<20mA) is desired. Several choices are available, each with its own disadvantages or limitations. | |||
=== Available Component Classes === | |||
==== Constant-Current Diode ==== | |||
Revision as of 23:25, 17 February 2022
Introduction
Whether driving LEDs or for transducer excitation, a need arises for a simple (ideally, two-leaded part) constant-current source which is simple to use, compact, versatile, adjustable, and has a wide span of current adjustment and excitation voltage supply range.
Unfortunately, such a part does not really exist if "small" constant current (<20mA) is desired. Several choices are available, each with its own disadvantages or limitations.
