RGB LED multivibrator

307

05:43:04

This is a cool little multivibrator, the two LEDs represent a rgb LED with both the blue and red chips used, grounding the transistors.

published 5 years ago

wyoelk

5 years ago

Your leds need to be moved above the npn transistors to light properly. And your 100k resistors affect the brightness. See this circuit for a better explanation. _ _ http://everycircuit.com/circuit/4842958837514240

BillyT

5 years ago

Here is a common anode rgb led set up, no allowance has been made for the different voltages and or currents required, For a positive rgb led, try this cct, http://everycircuit.com/circuit/6545829983420416

tooshy

5 years ago

Mines a common cathode rub led

tooshy

5 years ago

Also you sent me my own circuit lol

wyoelk

5 years ago

If you look closely you'll see the placement of the leds is before the npn transistors. BillyT used just a single current limiting resistor to protect the leds. So just a bit of changes.

tooshy

5 years ago

ITS ONE LED, WITH A COMMON CATHODE.

tooshy

5 years ago

Can't put it above, or I would need an extra led, think of the reason, I can't put it above

tooshy

5 years ago

You can't split an rgb led

tooshy

5 years ago

Mine ain't common anode, it's common cathode, sorry but you cant split an rgb led

BillyT

5 years ago

The reason I suggest putting the diodes in the collector side of the transistor is that it removes the spikes in the out put wave form and the circuit will start oscillating easier. So if you don't have access to a common anode rgb led, how about some pnp transitors. http://everycircuit.com/circuit/6609189525520384

tooshy

5 years ago

I have a few bc 557s

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