Friday, September 16, 2011

Constant current source/sink

A very accurate MOSFET current source/sink I designed.

Number of MOSFETs is variable. I designed this for load testing, so the circuit is using 4 MOSFETs to be able to dissipate more power. As can be seen on the bottom graph (green), it works well down to very low voltages due to the use of MOSFETs instead of BJTs.

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