Hi,
I am just starting a project to build a giant 5-band EQ - the first stage of which will be constructing 5 seperate VU meters using LM3915 IC chips.
I am intending to use the below circuit but with high power 1W LEDS - they are all around 2V and about 500mA of current. I have 12V/1200mA DC power adapter lying around that I was planning on using.
Can you advise if this will work? It's been about 10 years since I did any electronics in school! I am planning to use the LM3915 in bar mode, so there will be up to 10 1W LEDs operating at the same time.
Will I have enough power, or should I use a transistor connected to each output of the LM3915 to control a higher powered circuit?
Thanks,
Duncan
I am just starting a project to build a giant 5-band EQ - the first stage of which will be constructing 5 seperate VU meters using LM3915 IC chips.
I am intending to use the below circuit but with high power 1W LEDS - they are all around 2V and about 500mA of current. I have 12V/1200mA DC power adapter lying around that I was planning on using.
Can you advise if this will work? It's been about 10 years since I did any electronics in school! I am planning to use the LM3915 in bar mode, so there will be up to 10 1W LEDs operating at the same time.
Will I have enough power, or should I use a transistor connected to each output of the LM3915 to control a higher powered circuit?
Thanks,
Duncan
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