EEVblog 1688 – Constant Current Sources EXPLAINED + DEMO
Update: 2025-05-30
Description
DC Constant Current sources explained and demonstrated.
Forum: https://www.eevblog.com/forum/blog/eevblog-1688-constant-current-sources-explained-demo/
Voltage and Current Source Theory: https://www.youtube.com/watch?v=AQK7RyecVW0
DC Circuit Fundamentals Playist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtVLq2MDPIz82BWMIZcuwhK
00:00 – Constant Current Sources
11:08 – Practical uses of constant current sources
14:00 – Circuit examples
19:13 – TL431 Example
20:25 – LM317 CC circuit
21:42 – Low Side Source vs High Side Current Sink
24:19 – Bench examples
26:24 – Your PSU is a CC generator!
28:04 – Keithley 225 Constant Current Source
31:09 – LED strip example of Compliance Voltage
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