MCB900: Power Supply Problem on MCB900 V4

Information in this article applies to:

• MCB900 Version 4 - Early Versions

QUESTION

I have a problem with the power supply on MCB900. The ADC generates wrong results because the voltage regulator appears to be oscillating. How can I solve that issue?

ANSWER

There was a problem on early versions of the MCB900 V4 Board. The capacitor C10 should be a 10uF Tantalum (+ polarity on label www.keil.com/MCB900). If you change C10, the board will work fine.

MORE INFORMATION

• Refer to Schematics in the MCB900 User's Guide.

SEE ALSO

• MCB900: Capacitor Value on Board

Last Reviewed: Thursday, February 25, 2021