Multiple Leds

105

01:00:20

Planning to make this on pcb 
But I have few doubts...
~will it work the same way as it is shown in simulation
~will I be able to power it up with a standard 9v battery
~how many max leds I coud use
~how long will the battery last
Also how to make it look like it is not blinking but constantly on

published 10 years ago

flowDAQ

10 years ago

The 9v battery I am thinking of is only good a few milliamp

pmlmobi

10 years ago

If you don't want it to blink just connect the LEDs and resistors to the battery?

Sine_eyed

10 years ago

If you don't want it to blink, then you can do away with the multivibrator. All you'd need is a battery, a switch and the right current limiting resistor(s). And of course the LEDs..

pmlmobi

10 years ago

Also, try it on protoboard first

Jalaj

10 years ago

But keeping them constantly on will drain more power so i want them to blink at high rate so they look like they are on.

Sine_eyed

10 years ago

Then you'll need to adjust your RC network. (T)ime = (R)esistance x (C)apacitance. In order to surpass persistence of vision you'll need to get the frequency up passed about 30Hz. But they'll still seem weird until you pass um, I'm just gonna say 100Hz..

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