File:Linear Dimmer CAT4101.png

From NebarnixWiki
Jump to navigationJump to search

Original file(1,184 × 412 pixels, file size: 19 KB, MIME type: image/png)

Brightness control is achieved by dividing a 0-5V signal generated by the brightness trimpot then using the resulting voltage to set a current through a sense resistor. The sense resistor is 300Ω, meaning that the voltage across it for 2.5mA is 750mV. Thus, the divider must then be set to divide the buffered 5V signal by 6.67, or 15% of a trimpot. The circuit uses both sides of a dual rail-to-rail op-amp.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current11:48, 26 February 2014Thumbnail for version as of 11:48, 26 February 20141,184 × 412 (19 KB)NebarnixWikiSysop (talk | contribs)Brightness control is achieved by dividing a 0-5V signal generated by the brightness trimpot then using the resulting voltage to set a current through a sense resistor. The sense resistor is 300Ω, meaning that the voltage across it for 2.5mA is 750mV. Th

The following page uses this file: