I prefer to use high-brightness LEDs at very low currents. The resistor needs to be selected via experiment, though, as not all LEDs are equal. To test, connect your +VE through two diodes to the LED, then the LED resistor. Select for a value that doesn't dazzle you. I find resistors are usually in the range of 4k7 to 10k.
Using a lower current for your LED puts less switching noise on your power rails, as well as reducing the overall current required.On Tue, May 17, 2016 at 6:31 PM, guymccusker@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:I'm about to build my first CGS114 DUSG. I've seen a few people mention that the module runs better with low-current LEDs rather than standard ones.
First obvious question: is that true?
Second question: if it is a good idea to use low current LEDs, what changes are needed to the driver circuitry? Obviously a higher value current-limiting resistor would be in order, but what about the base drive resistor?
I am keen to get good values from the outset because I hate desoldering and I understand the boards can be delicate too. Any hints will be very much appreciated!
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