Build A Variable 100-W Resistor

This simple circuit, based on a IRFP254 FET and an LM358 op amp, simulates the action of a high-power variable resistor. The circuit can be very useful in testing and calibrating power supplies.
Oct. 25, 1994
Add Us On Google

About the Author

Staff

Articles, galleries, and recent work by members of Electronic Design's editorial staff.

Sign up for our eNewsletters
Get the latest news and updates

Related

Comment About the Article

To join the conversation, and become an exclusive member of Electronic Design, create an account today!