23 May '15, 5am

LED Display Brightness Controller Circuit

LED Display Brightness Controller Circuit

Even if you are designing a microcontroller-based LED display system, often it may calls for a manual option to control brightness of the LED display unit. On the otherhand, if it is based on discrete components, such an option is a crucial requirement. Here is an economical solution for such situations. The visible brightness of an LED display can be continuously varied by applying a pulsed-signal and varying its duty cycle. Usually, almost all 7-segment decoder ICs have a blanking input (RBI) connection to imply this type of brightness control. Because, the frequency in picture is above 50 Hz, unwanted flickering effect will not be noticeable. In the practical world, CD4033 is a very popular CMOS IC used with 7-segment LED displays. CD4033 consists of a 5-stage Johnson decade counter and an output decoder which converts the Johnson code to a 7-segment decoded output for ...

Full article: http://www.electroschematics.com/11953/led-display-bright...

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Buy LED Power Torch at SGD 9.90 at 70% discount:

Buy LED Power Torch at SGD 9.90 at 70% discount:

streetdeal.sg 01 Jun '15, 3pm

REDEMPTION DETAILS For redemption via delivery, kindly fill in your complete details clearly and accurately during checkou...