ajaxoftherockies
Newbie level 4
I have a working circuit that has three separate signals processed from an audio input.
The output signals drive a tri-color LED at about 700ma per color. Each color/LED is driven by a TIP120 transistor.
(schematic below shows three signal inputs on R23 R25 and R28 that drive the TIP120s)
Right now, the TIP120s work fine but a bit warm - nothing the heat sink can't handle, though.
Next I would like to scale this up, but am not exactly clear on how I get the output signals to drive additional transistors.
Or is the answer a more powerful replacement of the TIP120s? My final current requirement will be around 25 amps.
Thanks for suggestions!
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The output signals drive a tri-color LED at about 700ma per color. Each color/LED is driven by a TIP120 transistor.
(schematic below shows three signal inputs on R23 R25 and R28 that drive the TIP120s)
Right now, the TIP120s work fine but a bit warm - nothing the heat sink can't handle, though.
Next I would like to scale this up, but am not exactly clear on how I get the output signals to drive additional transistors.
Or is the answer a more powerful replacement of the TIP120s? My final current requirement will be around 25 amps.
Thanks for suggestions!
- a -