My 2x20 LCD is spec'd at 4.1 volts at a max of 260 mA. I run it with
a 68 ohm series resistor. Assuming a constant 4.1 volts, that's only
13 mA. It's plenty bright. I think we need to get one and experiment
with what is reasonable. You don't need to read it from across the
room.
Dave
--- In ComputerVoltageSources@yahoogroups.com, "John Loffink"
<jloffink@...> wrote:
a 68 ohm series resistor. Assuming a constant 4.1 volts, that's only
13 mA. It's plenty bright. I think we need to get one and experiment
with what is reasonable. You don't need to read it from across the
room.
Dave
--- In ComputerVoltageSources@yahoogroups.com, "John Loffink"
<jloffink@...> wrote:
>should be
> Correction. We need about 160 mA at 5 V, or 800 mW, and regulator
> specified well above that. LM341 is $0.60 from Digi-Key. TO-220package,
> up to 500 mA.
>
> John Loffink
> The Microtonal Synthesis Web Site
> http://www.microtonal-synthesis.com
> The Wavemakers Synthesizer Web Site
> http://www.wavemakers-synth.com